CN2938135Y - Device for detecting electric energy metering secondary loop comprehensive error - Google Patents
Device for detecting electric energy metering secondary loop comprehensive error Download PDFInfo
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- CN2938135Y CN2938135Y CN 200620127248 CN200620127248U CN2938135Y CN 2938135 Y CN2938135 Y CN 2938135Y CN 200620127248 CN200620127248 CN 200620127248 CN 200620127248 U CN200620127248 U CN 200620127248U CN 2938135 Y CN2938135 Y CN 2938135Y
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Abstract
The utility model discloses an electric energy metering secondary circuit comprehensive fault test device, pertaining to the technical field of electric energy metering test. The device has the mechanism and the function of an electric energy meter and comprises at least one mechanism or extension with sampling, wired transmiting or wireless delivering/ receiving the electric energy metering information from the electric energy meter of users. The device has the advantages that: 1. the device can be used to carry out on-line real-time comprehensive fault test in the electric energy metering secondary circuit and the test result is direct and accurate. 2. the device can be used to carry out on-line real-time comprehensive fault test in the electric energy metering secondary circuit which is impossible in the past. 3. the success of the invention of the device writes a record in the history of the electric energy detection domain which has no electric energy metering secondary circuit comprehensive fault test device. 4. with reasonable design and simple structure the test device is easy to use and is very useful in the electric power system and electric power industry detection domain.
Description
A technical field
The utility model discloses an electric energy measurement secondary circuit comprehensive error testing arrangement belongs to electric energy measurement instrument technical field, concretely relates to electric energy measurement secondary circuit comprehensive error's testing arrangement.
Second, background Art
In the production of electric power systems, electric energy is the final product, and the metering of the electric energy is extremely important. The electric energy metering device is a necessary tool for metering electric energy, and is an effective means for trading and settling electricity supply and electricity consumption by both the electricity supply and electricity consumption parties. The accuracy of the electric energy metering device is directly related to the economic benefits of both the power supply and the power utilization. Therefore, the national related metering regulations require that the error of the electric energy metering device must be regularly checked on site.
The electric energy metering device is generally composed of a voltage transformer (PT), a Current Transformer (CT) and an electric energy meter. Therefore, the error of the electric energy metering device is composed of PT error, CT error, error caused by PT secondary voltage drop, and error of the electric energy meter. The PT error and the CT error are called as the error of a primary loop of the electric energy metering, and the error caused by the PT secondary voltage drop and the error of the electric energy meter are called as the error of a secondary loop of the electric energy metering. Because PT and CT are generally composed of materials with high temperature and time stability, such as iron cores and coils, the errors of PT and CT are generally fixed and do not need to be measured frequently. And the error caused by the secondary voltage drop of the PT and the error of the electric energy meter are changed greatly, so that they need to be measured frequently.
Up to now, the method for measuring the comprehensive error of the electric energy metering secondary loop is to use an electric energy meter on-site calibration instrument and a PT secondary voltage drop tester respectively to measure the error of the electric energy meter and the PT secondary voltage drop, then calculate the measurement error caused by the PT secondary voltage drop by a calculation formula according to the measurement value of the PT secondary voltage drop, and finally add the error of the electric energy meter and the calculated error caused by the PT secondary voltage drop to obtain the comprehensive error of the electric energy metering secondary loop. Since the calculation formula of the error caused by the PT secondary voltage drop contains a parameter called an average power factor, which represents an average value over a period of time (several months) and is not easy to estimate its accurate value, the current method does not obtain a comprehensive error of a real electric energy metering secondary circuit at a certain time, but an estimated value. Therefore, it is necessary to research a testing method capable of measuring the comprehensive error of the secondary loop of the electric energy metering on line in real time. The method successfully researched by the inventor provides a brand-new method for testing the comprehensive error of the electric energy metering secondary circuit, can complete the online real-time measurement of the comprehensive error of the electric energy metering secondary circuit which cannot be completed in the past, is simple and easy to implement, and can accurately measure the comprehensive error of the electric energy metering secondary circuit. The testing device is successfully developed and designed according to the method, so that the history that no comprehensive error testing device of the electric energy metering secondary circuit exists in the field of electric energy detection is ended, and the method is innovative and creative. The new electric energy metering and testing device can directly and accurately measure the comprehensive error of the electric energy metering secondary circuit on line in real time, can provide accurate data of power supply and utilization, can better protect the economic benefits of both the power supply and the power utilization, and also makes contribution to the scientific and technological progress of the electric power industry.
Third, the invention
The utility model discloses an invention purpose is: the device can conveniently and accurately measure the comprehensive error of the electric energy metering secondary circuit, thereby providing a practical electric energy metering detection device for both power supply and power consumption parties.
The utility model discloses an electric energy measurement secondary circuit comprehensive error testing arrangement's technical scheme is such: the device for testing the comprehensive error of the secondary circuit of the electric energy metering has the main body part with mechanisms and structures for metering or detecting the electric energy, and the mechanisms and the structures for metering or detecting the electric energy can be solved and designed by the prior known and common technical content, and need not be described in detail. The technical characteristics are that: the device also has a mechanism and a structure for sampling and transmitting or wirelessly transmitting/receiving the electric energy metering information metered or detected by the user electric energy meter, wherein the mechanism and the structure are both composed of electronic mechanisms, and the mechanism is assembled with the main body part of the device, or is connected with the main body part of the device through a mutual transmission wired cable or is in mutual wireless transmission/reception connection, which means that the main body part of the device is assembled with the electronic mechanisms and the structures which can be in mutual wired transmission or mutual wireless transmission/reception connection. When the mechanism is a separate part arranged outside the main body part of the device, the mechanism forms a sub-set of the device, and the sub-set consists of a shell and an electronic mechanism inside the shell. The electronic mechanism is composed of various electronic components, devices, modules, parts, integrated circuit blocks, electronic circuits, software programs, and the like.
According to above electric energy measurement secondary circuit comprehensive error testing arrangement, technical characterstic still has: the mechanism and structure of the device for transmitting or receiving the electric energy metering information measured or detected by wire transmission or wireless transmission are provided with at least one or more than one (such as two or three) split sub-units which can be connected with the device through mutual transmission wire cables or mutually wirelessly transmit/receive communication.
According to the electric energy measurement secondary circuit comprehensive error testing arrangement described above, detailed technical characteristics have: the device has a mechanism and a structure for mutually wirelessly transmitting/receiving electric energy metering information, wherein: a. the mechanism and the structure for wirelessly sending the electric energy metering information are formed by functionally connecting a sampling circuit or an output circuit, an amplifying circuit, a sending circuit and a sending antenna of the electric energy metering information, wherein a sampling part of the sampling circuit is arranged at the electric energy metering information sampling part of a user electric energy meter, for example, a rotating disc of the electric energy meter is rotated for one circle to be sampled (or read) for one pulse, and the sampling part is a photoelectric sampling head which is arranged at the rotating part of the rotating disc of the electric energy meter; or the electric energy meter directly sends out an electric energy pulse, and the electric energy pulse is directly sampled and input; if the electric energy meter is a digital or electronic electric energy meter, the sampling component is a digital reading head which can directly read the digital quantity of the electric energy meter and is arranged at the digital display part of the electric energy meter; or directly inputting the digital of the digital electric energy meter into a sampling circuit (the same contents are not explained or repeated below), and the output circuit is the output circuit of the electric energy metering information of the device. The mutual radio transmission circuit is bidirectional two-way. b. The mechanism and the structure for wirelessly receiving the electric energy metering information are formed by functionally connecting a receiving circuit of the electric energy metering information, a receiving antenna, an amplifying circuit and an input circuit thereof, wherein the input circuit is the input circuit of the electric energy metering information of the device or the input circuit of a wireless transmitting/receiving extension of the device. The mutual radio receiving circuit is bidirectional two-way.
According to the electric energy measurement secondary circuit comprehensive error testing arrangement described above, detailed technical characteristics also have: the device has a detailed structure of a mechanism for mutually wirelessly transmitting/receiving electric energy metering information, and comprises: a. the mechanism and the structure for wirelessly sending the electric energy metering information are formed by connecting a pulse sampling circuit or an output circuit, a counting module, a wireless data transmission communication module and a sending antenna thereof; the mechanism and the structure for wirelessly receiving the electric energy metering information are formed by functionally connecting a wireless data transmission communication module, a receiving antenna thereof, a counting module and a pulse input circuit; or, the mechanism and the structure of the wireless transmission electric energy metering information are formed by connecting a pulse sampling circuit or an output circuit, a digital modulation circuit, a frequency conversion transmission circuit and a transmission antenna function thereof; the mechanism and the structure for wirelessly receiving the electric energy metering information are formed by functionally connecting a receiving and frequency conversion circuit, a receiving antenna thereof, a digital demodulation circuit and a pulse input circuit; or, the mechanism and the structure for wirelessly sending the electric energy metering information are formed by functionally connecting a digital sampling circuit or an output circuit, a digital amplifying circuit and a sending antenna thereof; the mechanism and the structure for wirelessly receiving the electric energy metering information are formed by functionally connecting a digital receiving and amplifying circuit, a receiving antenna thereof and a digital input circuit. The circuits described in a, b and c above can be designed and manufactured by using the existing known and commonly used technical contents and the known and commonly used electronic circuit components, so long as the circuits can complete or realize the functions of the circuits.
According to the electric energy measurement secondary circuit comprehensive error testing arrangement described above, detailed technical characteristics have: the mechanism for wirelessly transmitting/receiving the electric energy metering information of the device is one-way, and the structure of the device is as follows: a. the mechanism and the structure for wirelessly transmitting the electric energy metering information are formed by functionally connecting a sampling circuit, an amplifying circuit, a transmitting circuit and a transmitting antenna of the electric energy metering information, wherein a sampling part of the sampling circuit is arranged at a sampling part of a user electric energy meter (the sampling part is explained before). b. The mechanism and the structure for wirelessly receiving the electric energy metering information are formed by functionally connecting a receiving circuit of the electric energy metering information, a receiving antenna of the receiving circuit, an amplifying circuit and an input circuit, wherein the input circuit is the input circuit of the electric energy metering information of the device.
According to the electric energy measurement secondary circuit comprehensive error testing arrangement described above, detailed technical characteristics also have: the detailed structure of the one-way single-way of the wireless electric energy metering information sending/receiving mechanism of the device is as follows: a. the mechanism and the structure for wirelessly sending the electric energy metering information are formed by connecting a pulse sampling circuit, a counting module, a wireless data transmission communication module and a sending antenna thereof; the mechanism and the structure for wirelessly receiving the electric energy metering information are formed by functionally connecting a wireless data transmission communication module, a receiving antenna of the wireless data transmission communication module, a counting module and a pulse input circuit. Or, the mechanism and the structure of the wireless transmission electric energy metering information are formed by connecting a pulse sampling circuit, a digital modulation circuit, a frequency conversion transmission circuit and a transmission antenna function thereof; the mechanism and the structure for wirelessly receiving the electric energy metering information are formed by functionally connecting a receiving and frequency conversion circuit, a receiving antenna thereof, a digital demodulation circuit and a pulse input circuit. Or, the mechanism and the structure for wirelessly transmitting the electric energy metering information are formed by functionally connecting a digital sampling circuit, a digital amplifying circuit and a transmitting antenna thereof; the mechanism and the structure for wirelessly receiving the electric energy metering information are formed by functionally connecting a digital receiving amplifying circuit, a receiving antenna thereof and a digital input circuit. The above described wireless transmission/reception circuit is unidirectional single-pass, which means that the main body part of the device is assembled with the electronic mechanism and structure for single-pass wireless reception. The circuits described in a, b and c above can be designed and manufactured by using the existing known and commonly used technical contents and the known and commonly used electronic circuit components, so long as the circuits can complete or realize the functions of the circuits.
According to the electric energy measurement secondary circuit comprehensive error testing arrangement described above, detailed technical characteristics have: the device has a mechanism and a structure for transmitting electric energy metering information with each other in a wired mode, and the mechanism and the structure for transmitting the electric energy metering information with each other in the wired mode are as follows: one path is formed by the functional connection of a sampling circuit of electric energy metering information, an amplifying circuit, a transmission cable, an interface circuit, a connector and an input circuit, wherein a sampling part of the sampling circuit is arranged at an electric energy metering information sampling part (the sampling part is explained before) of a user electric energy meter and is arranged in front of a movable connector of the interface circuit to form a wired transmission extension of the device, the movable connector is the connecting end of an input and output mechanism (namely, the interface circuit) of the wired transmission extension, and the input circuit is the input circuit of the electric energy metering information of the device; the other one is formed by the functional connection of an output circuit of electric energy metering information, an amplifying circuit, an interface circuit, a connector, a transmission circuit, a transmission cable and an input circuit, wherein the output circuit is the output circuit of the electric energy metering information of the device, a fixed connector of the interface circuit arranged on the device is the connection end of an input and output mechanism (i.e. the interface circuit) of the device, and the input circuit is connected with the input end of a wired transmission extension of the device. The mutual wired transmission circuit is bidirectional two-way.
According to the electric energy measurement secondary circuit comprehensive error testing arrangement described above, detailed technical characteristics also have: the device has the detailed structure of a mechanism for mutually transmitting electric energy metering information in a wired mode, and the detailed structure comprises the following components: a. the mechanism and the structure of the wired transmission electric energy metering information are as follows: one path is formed by connecting a pulse sampling circuit, a photoelectric isolation circuit, a differential output circuit, a transmission circuit, a differential input circuit, a photoelectric isolation circuit and a pulse input circuit one by one; the other circuit is formed by connecting a pulse input circuit, a photoelectric isolation circuit, a differential input circuit, a transmission circuit, a differential output circuit, a photoelectric isolation circuit and a pulse output circuit one by one. Or, b, the mechanism and structure for wired transmission of electric energy metering information: one path is formed by connecting a pulse sampling circuit, an amplifying circuit, an electro-optical conversion interface circuit, a transmission optical fiber, a photoelectric conversion interface circuit, an amplifying circuit and a pulse input circuit one by one; the other is formed by connecting a pulse input circuit, an amplifying circuit, a photoelectric conversion interface circuit, a transmission optical fiber, an electro-optical conversion interface circuit, an amplifying circuit and a pulse output circuit one by one. Or, the mechanism and structure of wired transmission electric energy metering information: one path is formed by connecting a digital sampling circuit, a digital amplifying circuit, a transmission circuit, an interface circuit and a digital input circuit one by one; the other is formed by connecting a digital output circuit, a digital amplifying circuit, an interface circuit, a transmission circuit and a digital input circuit one by one. Or d, the mechanism and the structure for the wired transmission of the electric energy metering information are composed of a digital pulse output/input end, a wired transmission cable and a digital pulse output/input end. The circuits described in a, b, c, d above can be designed and fabricated using well known and commonly used technology and well known and commercially available electronic circuit components, so long as they are capable of performing or performing the functions of the circuits.
According to the electric energy measurement secondary circuit comprehensive error testing arrangement described above, detailed technical characteristics have: the wired electric energy metering information transmission mechanism of the device is one-way and one-way, and the structure of the device is as follows: the wired transmission electric energy metering information mechanism and the structure are formed by functionally connecting a sampling circuit, an amplifying circuit, a transmission cable, an interface circuit and a connector of electric energy metering information, before a movable connector of the interface circuit, a wired transmission extension of the device is formed, and a sampling part of the sampling circuit is arranged at a sampling part of a user electric energy meter (the sampling part is explained before); the fixed connector of the interface circuit is arranged on the device, namely an input and output mechanism of the electric energy metering information of the device.
According to the electric energy measurement secondary circuit comprehensive error testing arrangement described above, detailed technical characteristics also have: the device's wired transmission electric energy measurement information mechanism one-way detailed structure have: a. the mechanism and the structure of the wired transmission electric energy metering information are formed by connecting a pulse sampling circuit, a photoelectric isolation circuit, a differential output circuit, a transmission circuit, a differential input circuit, a photoelectric isolation circuit and a pulse input circuit one by one. Or b, the mechanism and the structure for the wired transmission of the electric energy metering information are formed by connecting a pulse sampling circuit, an amplifying circuit, an electro-optical conversion interface circuit, a transmission optical fiber, an electro-optical conversion interface circuit, an amplifying circuit and a pulse input circuit one by one. Or, the mechanism and the structure for the wired transmission of the electric energy metering information are formed by connecting a digital sampling circuit, a digital amplifying circuit, a transmission circuit, an interface circuit and a digital input circuit one by one. Or d, the mechanism and the structure for the wired transmission of the electric energy metering information are composed of a digital pulse output end, a wired transmission cable and a digital pulse input end. The wired transmission circuit described above is unidirectional and single-pass, which means that the main body of the device is assembled with the electronic mechanism and structure for single-pass wired transmission and reception. The circuits described in a, b, c, d above can be designed and fabricated using well known and commonly used technology and well known and commercially available electronic circuit components, so long as they are capable of performing or performing the functions of the circuits.
The utility model discloses an electric energy measurement secondary circuit comprehensive error testing arrangement's advantage has: 1. the electric energy metering secondary circuit comprehensive error testing device can complete the online real-time measurement of the electric energy metering secondary circuit comprehensive error which cannot be completed in the past; 2. the comprehensive error of the electric energy metering secondary circuit can be simply, conveniently, directly and accurately measured; 3. the device provides a practical device for measuring the comprehensive error of the electric energy metering secondary circuit for both the power supply and the power consumption, and has very obvious practical significance; 4. the device has the advantages of ingenious conception, reasonable design, simple structure, and easy and convenient use, and is worth of being popularized and used in the field of electric power systems and electric power industry detection; 5. the design and the development of the electric energy metering secondary circuit comprehensive error testing device are successful, the problem that the metering secondary circuit comprehensive error cannot be measured for a long time in the electric energy detection field is solved, and the historical blank that no electric energy metering secondary circuit comprehensive error testing device exists in the electric energy detection field is filled.
Description of the drawings
The attached drawings of the specification of the utility model are 6 in total:
FIG. 1 is a general schematic diagram of an electric energy metering secondary circuit comprehensive error testing device;
FIG. 2 is a schematic diagram of a testing device for comprehensive errors of an electric energy metering secondary circuit adopting a wired transmission mechanism and a structure;
fig. 3 is a schematic diagram of a wired transmission electric energy metering information mechanism and a structure of the electric energy metering secondary circuit comprehensive error testing device in fig. 2 (the one-way single path is changed into the forward and reverse two-way path, namely, the mutual wired two-way transmission is performed);
FIG. 4 is a schematic diagram of a testing device for comprehensive errors of an electric energy metering secondary circuit adopting a wireless transmitting/receiving mechanism and a structure;
fig. 5 is a schematic diagram of a wireless electric energy metering information transmitting/receiving mechanism and structure of the electric energy metering secondary circuit comprehensive error testing device shown in fig. 4 (a wireless unidirectional single-path transmitting/receiving is changed into a forward-reverse two-path structure, that is, a mutual wireless transmitting/receiving two-way two-path structure);
fig. 6 is another schematic diagram of a mechanism and a structure for wirelessly transmitting/receiving electric energy metering information of the testing device for the comprehensive error of the electric energy metering secondary circuit in fig. 4 (a bidirectional two-way structure for mutually wirelessly transmitting/receiving is obtained by changing wireless one-way transmission/reception into forward and reverse two-way transmission/reception);
the use of the same reference symbols in different drawings indicates identical items being referred to by the same reference symbols in the various drawings. In each figure: 1. a voltage transformer (PT); 2. a Current Transformer (CT); 3. a voltage three-phase secondary line input end; 4. a current three-phase secondary line input end; 5. a current three-phase secondary cable; 6. a voltage three-phase secondary cable; 7. a sampling end at the initial part (end part) of the voltage three-phase secondary line; 8. a sampling end at the initial part (end part) of the current three-phase secondary line; 9. the testing device (or the electric energy metering instrument) of the comprehensive error of the electric energy metering secondary circuit; 10. a user electric energy meter (or an electric energy meter at a detection place); 11. an extension of the testing device 9 for sampling and unidirectional/bidirectional wired transmission, or mutual wireless transmission/reception of electric energy information; 12. the extension of the testing device 9 for one-way or two-way wired transmission or mutual wireless transmission/reception of electric energy information, or is a part of the testing device 9; 13. the sampling electric energy pulse input is indicated; 14. indicating wired transmission electric energy pulse; 15. signaling a wireless transfer of a pulse of electrical energy; 16. indicating the input or output of electric energy pulse; 17. indicating the boundary of an outdoor site and a user control room; 18. a wired transmission cable; 19. a photoelectric isolation circuit (out); 20. a differential amplification output circuit; 21. a differential amplification input circuit; 22. a photoelectric isolation circuit (in); 23. a pulse input circuit; 24. a counting module (a); 25. an interface circuit (a); 26. a wireless data transmission communication module (a); 27. a wireless data transmission communication module (b); 28. an interface circuit (b); 29. a counting module (b); 30. a digital modulation circuit; 31. a frequency conversion circuit; 32. an amplifying transmission circuit; 33. a receiving and frequency conversion circuit; 34. a digital demodulation circuit.
Detailed description of the preferred embodiments
The non-limiting embodiment of the present invention is as follows:
first embodiment comprehensive error testing device for secondary circuit of electric energy metering
The comprehensive error testing device for the electric energy metering secondary circuit is designed and manufactured according to the comprehensive error testing method for the electric energy metering secondary circuit, and can be used for directly and accurately measuring the comprehensive error of the electric energy metering secondary circuit on line in real time. The specific structure of the apparatus of this example is jointly shown in fig. 1 to 3. The main body part (9 in fig. 1 and 2) of the device is provided with a mechanism and a structure for measuring or detecting the electric energy, and the mechanism and the structure for measuring or detecting the electric energy can be solved and designed by the prior known and common technical content without needing to be described in more detail. The technical characteristics are that: the device 9 is also provided with a mechanism and a structure 11, 12 for sampling and transmitting the electric energy metering information metered or detected by the user electric energy meter 10 by wire, wherein the mechanism and the structure 11, 12 are both composed of electronic mechanisms, the mechanism 12 is assembled with the main body part 9 of the device, and the mechanism 11 is connected with the main body part 9 of the device by a mutual transmission wire cable 18, namely the main body part 9 of the device is assembled with the electronic mechanism and the structure 12 which can be mutually transmitted by wire. When the mechanism 11 is a separate part, arranged outside the main part of the device 9, it constitutes a sub-set of the device 9, the sub-set 11 consisting of a housing and the electronic mechanisms inside it. The device 9 in this example has at least one separate extension 11 which can be coupled to the device 9 by means of a mutual transmission cable. The electronic mechanism is composed of various electronic components, devices, modules, parts, integrated circuit blocks, electronic circuits, software programs, and the like. The sampling is to sample, measure or detect the electric energy of the same time period on the end part of the initial part of the secondary circuit to be tested and the user electric energy meter 10 by using a sampling method. The sampling and metering or detecting of the electric energy in the same time period at two places to be tested (the initial end of the secondary circuit to be tested and the user electric energy meter 10) is characterized by the pulse number or digital quantity. The electric energy represented by the number of pulses is sampled (or read) one pulse after one revolution of the turntable of the electric energy meter 10, or one electric energy pulse directly emitted from the electric energy meter 10 is sampled. Or if the electric energy meter 10 is a digital or electronic electric energy meter, the sampling component is a digital reading head which is arranged at the digital display part of the electric energy meter 10 and can directly read the digital quantity of the electric energy meter, or directly input the digital quantity of the digital electric energy meter into the sampling circuit. For example, the digital electric energy meter 9 can directly read the digital quantity of the electric energy measurement. The electric energy metering information of two metering or detecting places in the same time period is collected to two electric energy metering instruments 9(12), 11 (or any place of the two places) through a wired transmission cable 18, which is shown in figure 1 and figure 2: the input of the sampled power pulse is indicated at 13, the wired transmission power pulse is indicated at 14, and the input or output of the power pulse is indicated at 16. The device of the example has a mechanism and a structure for mutually transmitting the electric energy metering information in a wired way, and the mechanism and the structure are as follows: one path is formed by the functional connection of a sampling circuit of electric energy metering information, an amplifying circuit, a transmission cable, an interface circuit, a connector and an input circuit, wherein a sampling part of the sampling circuit is arranged at the electric energy metering information sampling part of a user electric energy metering instrument, for example, a rotating disc of the electric energy meter 10 is rotated for one circle to be sampled (or read) for one pulse, and the sampling part is a photoelectric sampling head and is arranged at the rotating part of the rotating disc of the electric energy meter 10. Before the movable connector of the interface circuit, the cable transmission extension set 11 of the device is formed, the movable connector is the connection end of the input and output mechanism (namely, the interface circuit) of the cable transmission extension set 11, and the input circuit is the input circuit of the electric energy metering information of the device 9. The other circuit is composed of an output circuit of electric energy metering information, an amplifying circuit, an interface circuit, a connector assembly, a transmission circuit and a transmission cable, wherein the output circuit is the output circuit of the electric energy metering information of the device 9, a fixed connector assembly of the interface circuit arranged on the device 9 is the connection end of an input and output mechanism (namely the interface circuit) of the device 9, and the input circuit is connected with the input end of a wired transmission extension 11 of the device. The mutual wired transmission circuit is bidirectional two-way. The detailed structure of the mechanism for transmitting the electric energy metering information by wire between the devices 9 in this example is shown in fig. 3, and the structure of changing the one-way single path shown in fig. 3 into the structure of two-way forward and reverse paths becomes the structure of wire-two-way transmission. The concrete structure is as follows: a. a mechanism and structure for wired transmission of electric energy metering information are: one path is formed by connecting a pulse sampling circuit, a photoelectric isolation circuit 19, a differential output circuit 20 (arranged in the extension 11), a transmission circuit (a wired transmission cable 18), a differential input circuit 21, a photoelectric isolation circuit 22 and a pulse input circuit 23 (arranged in the device 9 or a part 12 thereof) one by one. The other path is formed by connecting a pulse input circuit 23, a photoelectric isolation circuit 22, a differential input circuit 21 (arranged in the extension 11), a transmission circuit (a wired transmission cable 18), a differential output circuit 20, a photoelectric isolation circuit 19 and a pulse output circuit (arranged in the device 9 or a part 12 thereof) one by one. Another mechanism and structure for transmitting electric energy metering information by wire is (not shown in the drawings): one path is formed by connecting a digital sampling circuit, a digital amplifying circuit (such as arranged in the extension 11), a transmission circuit (a wired transmission cable 18), an interface circuit and a digital input circuit (such as arranged in the device 9 or a part 12 thereof) one by one. Another route consists of digital output circuits, digital amplification circuits, interface circuits (for example provided in the device 9 or in part 12 thereof), transmission circuits (wired transmission cables 18), digital input circuits (for example provided in the extension 11) connected one by one. The circuits described in a and b above can be designed and manufactured using well known and commonly used technical content and well known and commercially available electronic circuit components, as long as they can perform or fulfill the functions of the circuits. The operation process of online real-time metering or detecting the comprehensive error of the tested secondary circuit of the device of the example is as follows: the device 9 is connected into the circuit of the starting end part of the secondary circuit to be tested, an extension 11 is arranged at the user electric energy meter 10 of the secondary circuit to be tested, the electric energy quantity of the starting end part of the secondary circuit to be tested and the electric energy quantity of the user electric energy meter 10 in the same time period are measured or detected on line in real time, two electric energy quantities represented by the pulse quantity or the digital quantity in the same time period are sampled in a sampling mode, the electric energy measuring information of the two measured or detected electric energy quantities in the same time period is collected to the electric energy measuring instruments 9 and 11 in two places (or any place of the two places) in a wired transmission mode through a wired transmission cable 18, and the difference of the two electric energy quantities is measured or detected on line in real time, namely the comprehensive error of the electric energy measurement of the secondary circuit is measured or detected on line.
Second embodiment comprehensive error testing device for secondary circuit of electric energy metering
The specific structure of the electric energy metering secondary circuit comprehensive error testing device of the embodiment is jointly shown by fig. 1, fig. 4 and fig. 5. The main body part (9 in fig. 1 and 4) of the device is provided with a mechanism and a structure for measuring or detecting the electric energy, and the mechanism and the structure for measuring or detecting the electric energy can be solved and designed by the prior known and common technical content without needing to be described in more detail. The technical characteristics are that: the device 9 is also provided with a mechanism and a structure 11, 12 for sampling and wirelessly transmitting/receiving the electric energy metering information metered or detected by the user electric energy meter 10, wherein the mechanism and the structure 11, 12 are both composed of electronic mechanisms, the mechanism 12 is assembled with the main body part 9 of the device, and the mechanism 11 is wirelessly transmitted/received with the main body part 9 of the device, namely the main body part 9 of the device is assembled with the electronic mechanisms and the structure 12 which can wirelessly transmit/receive with each other. When the mechanism 11 is a separate part, arranged outside the main part of the device 9, it constitutes a sub-set 11 of the device 9, the sub-set 11 consisting of a housing and electronic mechanisms inside it. The device 9 in this example has at least one separate extension 11 which can be coupled to the device 9 by means of a mutual transmission cable. The electronic mechanism is composed of various electronic components, devices, modules, parts, integrated circuit blocks, electronic circuits, software programs, and the like. The device 9 of this example has a mechanism and a structure for mutually wirelessly transmitting/receiving electric energy metering information, in which: a. the mechanism and the structure for wirelessly transmitting the electric energy metering information are formed by functionally connecting a sampling circuit or an output circuit of the electric energy metering information, an amplifying circuit, a transmitting circuit and a transmitting antenna thereof, wherein a sampling part of the sampling circuit is arranged at an electric energy metering information sampling part of a user electric energy meter, and the sampling mode is described in the first embodiment and is the prior art. The output circuit is the output circuit of the electric energy metering information of the device 9. The mutual radio transmission circuit is bidirectional two-way. b. The mechanism and the structure for wirelessly receiving the electric energy metering information are formed by functionally connecting a receiving circuit of the electric energy metering information, a receiving antenna, an amplifying circuit and an input circuit thereof, wherein the input circuit is the input circuit of the electric energy metering information of the device 9 or the input circuit of a wireless transmitting/receiving extension 11 of the device 9. The mutual radio receiving circuit is bidirectional two-way. The detailed structure of the device 9 of this example having a mechanism for mutually wirelessly transmitting/receiving electric energy metering information is shown in fig. 5, and the one-way single path shown in fig. 5 is changed to a two-way structure in the forward and reverse directions, that is, a two-way structure for mutually wirelessly transmitting/receiving. The concrete structure is as follows: a. a mechanism and structure for wirelessly transmitting electric energy metering information is formed by connecting a pulse sampling circuit or an output circuit, a counting module 24, an interface circuit 25, a wireless data transmission communication module 26 and a transmitting antenna function thereof, and can form an extension 11 or 12 or a component of the device 9 of the embodiment. The mechanism and structure for wireless receiving electric energy metering information is formed by functional connection of a wireless data transmission communication module 27 and a receiving antenna thereof, an interface circuit 28, a counting module 29 and a pulse input circuit, and can form an extension 11 or 12 or a component of the device 9 in the example. Or, b, another mechanism and structure for wirelessly transmitting the electric energy metering information is formed by connecting a digital sampling circuit or an output circuit, a digital amplifying circuit and a transmitting antenna function thereof, and can form the extension 11 or 12 or be a component part of the device 9 of the example. The mechanism and the structure for wirelessly receiving the electric energy metering information are formed by functionally connecting a digital receiving and amplifying circuit, a receiving antenna thereof and a digital input circuit. May constitute either extension 11 or 12 or be an integral part of the device 9 of this example, which are not illustrated. The circuits described in a and b above can be designed and manufactured using well known and commonly used technical content and well known and commercially available electronic circuit components, as long as they can perform or fulfill the functions of the circuits. The operation process of the device for online real-time metering or detecting the comprehensive error of the secondary circuit to be detected is different from that of the device in the first embodiment in that: after sampling, the electric energy metering information of two metering or detecting places in the same time period is collected to the electric energy metering instruments 9(12) and 11 of two places (or any place of two places) in a mutual wireless transmitting/receiving mode, the difference of the two electric energy is metered, and the comprehensive error of the secondary loop electric energy metering is metered or detected on line in real time. In fig. 1, fig. 4 illustrates: the sampling power pulse input is indicated at 13, the wireless transmission power pulse is indicated at 15, and the power pulse input or output is indicated at 16. The rest of the components which are not described are all the same as those in the first embodiment and are not repeated.
Third embodiment comprehensive error testing device for secondary circuit of electric energy metering
The specific structure of the electric energy metering secondary circuit comprehensive error testing device of the embodiment is jointly shown in fig. 1 to 3. The differences from the first embodiment are as follows: first, the detailed structure of the mechanism for the wired transmission of the electric energy metering information of the main body part (9 in fig. 1 and 2) of the device has two parts (11, 12), constituting separate sub-units 11 and 12 connectable to the device 9 by a wired transmission cable. Second, the device 9 and the slave units 11 and 12 of this example each have a mechanism and a detailed configuration for transmitting electric energy metering information to each other by wire. Thirdly, the two-way double-path structure of the mechanism for mutual wired transmission of electric energy metering information is as follows: a. a mechanism and structure (not shown) for wired transmission of electric energy metering information is: one path is formed by connecting a pulse sampling circuit, an amplifying circuit, an electro-optical conversion interface circuit (arranged in an extension 11), a transmission optical fiber (a wired transmission cable), an electro-optical conversion interface circuit (forming an extension 12), the amplifying circuit and a pulse input circuit (arranged in a device 9) one by one. The other path is formed by connecting a pulse input circuit, an amplifying circuit, a photoelectric conversion interface circuit (arranged in the extension 11), a transmission optical fiber (a wired transmission cable), an electro-optical conversion interface circuit (forming the extension 12), the amplifying circuit and a pulse output circuit (arranged in the device 9) one by one. Alternatively, another mechanism and structure (not shown) for wired transmission of electric energy metering information is constituted by a digital pulse input/output terminal (constituting the extension 11) -a wired transmission cable-a digital pulse input/output terminal (provided in the device 9 or in the portion 12 thereof). The circuits described in a and b above can be designed and manufactured using well known and commonly used technical content and well known and commercially available electronic circuit components, as long as they can perform or fulfill the functions of the circuits. The rest of the parts which are not described are all the same as those in the first embodiment, the second embodiment and the third embodiment, and the description is not repeated.
Fourth embodiment electric energy measurement secondary circuit comprehensive error testing arrangement
The specific structure of the electric energy metering secondary circuit comprehensive error testing device of the embodiment is jointly shown by fig. 1, fig. 4 and fig. 6. The differences from the description in example two are: first, the main body (9 in fig. 1 and 4) of the device wirelessly transmits/receives the measured or detected electric energy measurement information, and has two mechanisms (11, 12) constituting separate units 11 and 12 that can wirelessly transmit/receive with the device 9. Second, the device 9 and the slave units 11 and 12 of this example each have a mechanism and a detailed configuration for wirelessly transmitting and receiving the electric energy metering information to and from each other. Third, the detailed structure of the mechanism for mutually wirelessly transmitting/receiving the electric energy metering information of the device 9 of this example is shown in fig. 6, and the one-way single path shown in fig. 6 is changed into a two-way structure in the forward and reverse directions, that is, a two-way structure for mutually wirelessly transmitting/receiving. Fourthly, the two-way structure of the mechanism for wirelessly sending/receiving the electric energy metering information is as follows: a mechanism and structure for wirelessly transmitting electric energy metering information is formed by connecting a pulse sampling circuit or an output circuit, a digital modulation circuit 30, a frequency conversion circuit 31, an amplification transmitting circuit 32 and a transmitting antenna function thereof, and can form an extension 11 or 12 or a component of a device 9 of the embodiment. The mechanism and structure of the wireless receiving electric energy metering information is formed by functionally connecting a receiving and frequency conversion circuit 33 and a receiving antenna thereof, a digital demodulation circuit 34 and a pulse input circuit, and can form the extension set 11 or 12 or form a part of the device 9 of the example. The circuits described in a and b above can be designed and manufactured using well known and commonly used technical content and well known and commercially available electronic circuit components, as long as they can perform or fulfill the functions of the circuits. The rest of the parts which are not described are all the same as those in the first embodiment, the second embodiment and the third embodiment, and the description is not repeated.
Fifth embodiment comprehensive error testing device for secondary circuit of electric energy metering
The specific structure of the electric energy metering secondary circuit comprehensive error testing device of the embodiment is jointly shown in fig. 1 to 3. The differences from the first embodiment are as follows: firstly, the device 9 is an electric energy metering device field detector (patent number ZL 200420016518.6); secondly, the device 9 of this example has a mechanism and a structure for one-way wired transmission of electric energy metering information, and the specific structure is shown in fig. 3. Thirdly, the detailed structure of the mechanism for one-way wired transmission of the electric energy metering information is as follows: a. a mechanism and structure for one-way single-channel wired transmission of electric energy metering information is composed of pulse sampling circuit, photoelectric isolating circuit 19, differential output circuit 20 (arranged in extension 11), transmission circuit (wired transmission cable 18), differential input circuit 21, photoelectric isolating circuit 22 and pulse input circuit 23 (arranged in device 9 or its 12 part) which are connected one by one. Alternatively, b, another mechanism and structure for unidirectional one-way wired transmission of electric energy metering information is formed by (not shown) connecting a digital sampling circuit, a digital amplifying circuit (e.g. arranged in the extension 11), a transmission circuit (wired transmission cable 18), an interface circuit and a digital input circuit (e.g. arranged in the device 9 or in the part 12 thereof) one by one. The rest of the parts which are not described are all the same as those in the first embodiment, the second embodiment, the third embodiment and the fourth embodiment, and the description is not repeated.
Sixth embodiment comprehensive error testing device for secondary circuit of electric energy metering
The specific structure of the electric energy metering secondary circuit comprehensive error testing device of the embodiment is jointly shown by fig. 1, fig. 4 and fig. 5. The differences from the description in example two are: first, the device 9 of this example has a mechanism and a structure for transmitting/receiving electric energy metering information wirelessly in one way and in one way, and the specific structure is shown in fig. 5. Secondly, the detailed structure of the mechanism for transmitting/receiving the electric energy metering information in a one-way wireless mode is as follows: a. a mechanism and a structure for one-way single-channel wireless transmission of electric energy metering information are formed by connecting a pulse sampling circuit, a counting module 24, an interface circuit 25, a wireless data transmission communication module 26 and a transmitting antenna function thereof, and can form an extension 11. A one-way single-channel wireless electric energy metering information receiving mechanism and structure is composed of a wireless data transmission communication module 27, a receiving antenna of the wireless data transmission communication module, an interface circuit 28, a counting module 29 and a pulse input circuit which are connected in a functional mode, and can form a component 12 of the device 9. Or b, another one-way wireless electric energy metering information sending mechanism and structure is formed by connecting a digital sampling circuit, a digital amplifying and receiving circuit and a sending antenna function thereof and can form an extension 11, and another one-way wireless electric energy metering information receiving mechanism and structure is formed by connecting a digital input circuit, a digital amplifying and receiving circuit and a receiving antenna function thereof and can form a component 12 of the device 9. They are not shown graphically. The rest of the parts which are not described are all the same as those in the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment and the like, and the description is not repeated.
Seventh embodiment comprehensive error testing device for electric energy metering secondary circuit
The specific structure of the electric energy metering secondary circuit comprehensive error testing device of the embodiment is jointly shown in fig. 1 to 3. The differences described in example three are: first, the device 9 of this example has a mechanism and a structure for one-way wired transmission of electric energy metering information, and the specific structure is shown in fig. 3. Secondly, the detailed structure of the mechanism for one-way wired transmission of electric energy metering information is as follows: a. a mechanism and structure for one-way single-channel wired transmission of electric energy metering information is composed of pulse sampling circuit, amplifier circuit, photoelectric conversion interface circuit (arranged in slave set 11), transmission optical fibre (wired transmission cable), photoelectric conversion interface circuit (forming slave set 12), amplifier circuit and pulse input circuit (arranged in device 9) connected one by one. Alternatively, another mechanism and structure (not shown) for unidirectional one-way wired transmission of electric energy metering information is constituted by a digital pulse output (constituting the extension 11) -a wired transmission cable-a digital pulse input (provided in the device 9 or in the portion 12 thereof). The rest of the parts which are not described are all the same as those in the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment and the sixth embodiment, and the description is not repeated.
Embodiment eight-electric energy metering secondary loop comprehensive error testing device
The specific structure of the electric energy metering secondary circuit comprehensive error testing device of the embodiment is jointly shown by fig. 1, 4 and 6. The differences described in example four are: first, the device 9 of this example has a mechanism and a structure for transmitting/receiving electric energy metering information wirelessly in one way and in one way, and the specific structure is shown in fig. 6. Secondly, the detailed structure of the mechanism for transmitting/receiving the electric energy metering information in a one-way wireless mode is as follows: a mechanism and a structure for one-way single-channel wireless transmission of electric energy metering information are formed by connecting a pulse sampling circuit, a digital modulation circuit 30, a frequency conversion circuit 31, an amplification transmitting circuit 32 and a transmitting antenna function thereof, and can form an extension 11. The mechanism and structure of the unidirectional single-path wireless receiving electric energy metering information is formed by functionally connecting a receiving and frequency conversion circuit 33, a receiving antenna thereof, a digital demodulation circuit 34 and a pulse input circuit, and can form a component 12 of the device 9. The rest of the parts which are not described are all the same as those in the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment, the sixth embodiment and the seventh embodiment, and the description is not repeated.
Claims (10)
1. The utility model provides an electric energy measurement secondary circuit comprehensive error testing arrangement, the device's main part has mechanism and the structure that electric energy measurement or detected, characterized in that: the device also has a mechanism and a structure for sampling and transmitting or wirelessly transmitting/receiving the electric energy metering information metered or detected by the user electric energy meter, wherein the mechanism and the structure are both composed of electronic mechanisms, the mechanism is assembled with the main body part of the device, or is connected with the main body part of the device through a mutual transmission wired cable or is in mutual wireless transmission/reception connection, when the mechanism is a split part arranged outside the main body part of the device, an extension of the device is formed, and the extension is composed of a shell and the electronic mechanisms in the shell.
2. The electric energy metering secondary circuit comprehensive error testing device of claim 1, characterized in that: the mechanism and structure of the device for transmitting or receiving the electric energy metering information measured or detected by wire transmission or wireless transmission are required to be provided with at least one split extension which can be connected with the device through a mutual transmission wire cable or can be in mutual wireless transmission/receiving communication.
3. The electric energy metering secondary circuit comprehensive error testing device of claim 2, characterized in that: the device has a mechanism and a structure for mutually wirelessly transmitting/receiving electric energy metering information, wherein:
a. the mechanism and the structure for wirelessly sending the electric energy metering information are formed by functionally connecting a sampling circuit or an output circuit of the electric energy metering information, an amplifying circuit, a sending circuit and a sending antenna thereof, wherein a sampling part of the sampling circuit is arranged at an electric energy metering information sampling part of a user electric energy meter, and the output circuit is the output circuit of the electric energy metering information of the device;
b. the mechanism and the structure for wirelessly receiving the electric energy metering information are formed by functionally connecting a receiving circuit of the electric energy metering information, a receiving antenna, an amplifying circuit and an input circuit thereof, wherein the input circuit is the input circuit of the electric energy metering information of the device or the input circuit of a wireless transmitting/receiving extension of the device.
4. The electric energy metering secondary circuit comprehensive error testing device according to claim 3, characterized in that: the detailed structure of the mechanism for mutually wirelessly transmitting/receiving the electric energy metering information of the device comprises the following components:
a. the mechanism and the structure for wirelessly sending the electric energy metering information are formed by connecting a pulse sampling circuit or an output circuit, a counting module, a wireless data transmission communication module and a sending antenna thereof; the mechanism and the structure for wirelessly receiving the electric energy metering information are formed by functionally connecting a wireless data transmission communication module, a receiving antenna thereof, a counting module and a pulse input circuit; or,
b. the mechanism and the structure for wirelessly transmitting the electric energy metering information are formed by connecting a pulse sampling circuit or an output circuit, a digital modulation circuit, a frequency conversion transmitting circuit and a transmitting antenna function thereof; the mechanism and the structure for wirelessly receiving the electric energy metering information are formed by functionally connecting a receiving and frequency conversion circuit, a receiving antenna thereof, a digital demodulation circuit and a pulse input circuit; or,
c. the mechanism and the structure for wirelessly transmitting the electric energy metering information are formed by functionally connecting a digital sampling circuit or an output circuit, a digital amplifying circuit and a transmitting antenna thereof; the mechanism and the structure for wirelessly receiving the electric energy metering information are formed by functionally connecting a digital receiving and amplifying circuit, a receiving antenna thereof and a digital input circuit.
5. The electric energy metering secondary circuit comprehensive error testing device according to claim 4, characterized in that: the mechanism for wirelessly transmitting/receiving the electric energy metering information of the device is one-way, and the structure of the device is as follows:
a. the mechanism and the structure for wirelessly transmitting the electric energy metering information are formed by functionally connecting a sampling circuit, an amplifying circuit, a transmitting circuit and a transmitting antenna of the electric energy metering information, wherein a sampling part of the sampling circuit is arranged at a sampling part of a user electric energy meter;
b. the mechanism and the structure for wirelessly receiving the electric energy metering information are formed by functionally connecting a receiving circuit of the electric energy metering information, a receiving antenna of the receiving circuit, an amplifying circuit and an input circuit, wherein the input circuit is the input circuit of the electric energy metering information of the device.
6. The electric energy metering secondary circuit comprehensive error testing device of claim 5, characterized in that: the detailed structure of the one-way single-way of the wireless electric energy metering information sending/receiving mechanism of the device is as follows:
a. the mechanism and the structure for wirelessly sending the electric energy metering information are formed by connecting a pulse sampling circuit, a counting module, a wireless data transmission communication module and a sending antenna thereof; the mechanism and the structure for wirelessly receiving the electric energy metering information are formed by functionally connecting a wireless data transmission communication module, a receiving antenna thereof, a counting module and a pulse input circuit; or,
b. the mechanism and the structure for wirelessly transmitting the electric energy metering information are formed by connecting a pulse sampling circuit, a digital modulation circuit, a frequency conversion transmitting circuit and a transmitting antenna thereof; the mechanism and the structure for wirelessly receiving the electric energy metering information are formed by functionally connecting a receiving and frequency conversion circuit, a receiving antenna thereof, a digital demodulation circuit and a pulse input circuit; or,
c. the mechanism and the structure for wirelessly transmitting the electric energy metering information are formed by functionally connecting a digital sampling circuit, a digital amplifying circuit and a transmitting antenna thereof; the mechanism and the structure for wirelessly receiving the electric energy metering information are formed by functionally connecting a digital receiving amplifying circuit, a receiving antenna thereof and a digital input circuit.
7. The electric energy metering secondary circuit comprehensive error testing device of claim 2, characterized in that: the device has a mechanism and a structure for transmitting electric energy metering information with each other in a wired mode, and the mechanism and the structure for transmitting the electric energy metering information with each other in the wired mode are as follows: one path is formed by the functional connection of a sampling circuit of electric energy metering information, an amplifying circuit, a transmission cable, an interface circuit, a connector and an input circuit, wherein a sampling part of the sampling circuit is arranged at the electric energy metering information sampling part of a user electric energy meter and is arranged in front of a movable connector of the interface circuit to form a wired transmission extension of the device, the movable connector is the connection end of an input and output mechanism of the wired transmission extension, and the input circuit is the input circuit of the electric energy metering information of the device; the other circuit is composed of an output circuit of electric energy metering information, an amplifying circuit, an interface circuit, a connector, a transmission circuit, a transmission cable and an input circuit which are functionally connected, wherein the output circuit is the output circuit of the electric energy metering information of the device, a fixed connector of the interface circuit arranged on the device is the connecting end of an input and output mechanism of the device, and the input circuit is connected with the input end of a wired transmission extension of the device.
8. The electric energy metering secondary circuit comprehensive error testing device of claim 7, characterized in that: the detailed structure of the mutual wired electric energy metering information transmission mechanism of the device is as follows:
a. the mechanism and the structure of the wired transmission electric energy metering information are as follows: one path is formed by connecting a pulse sampling circuit, a photoelectric isolation circuit, a differential output circuit, a transmission circuit, a differential input circuit, a photoelectric isolation circuit and a pulse input circuit one by one; the other circuit is formed by connecting a pulse input circuit, a photoelectric isolation circuit, a differential input circuit, a transmission circuit, a differential output circuit, a photoelectric isolation circuit and a pulse output circuit one by one; or,
b. the mechanism and the structure of the wired transmission electric energy metering information are as follows: one path is formed by connecting a pulse sampling circuit, an amplifying circuit, an electro-optical conversion interface circuit, a transmission optical fiber, a photoelectric conversion interface circuit, an amplifying circuit and a pulse input circuit one by one; the other is formed by connecting a pulse input circuit, an amplifying circuit, a photoelectric conversion interface circuit, a transmission optical fiber, an electro-optical conversion interface circuit, an amplifying circuit and a pulse output circuit one by one; or,
c. the mechanism and the structure of the wired transmission electric energy metering information are as follows: one path is formed by connecting a digital sampling circuit, a digital amplifying circuit, a transmission circuit, an interface circuit and a digital input circuit one by one; the other is formed by connecting a digital output circuit, a digital amplifying circuit, an interface circuit, a transmission circuit and a digital input circuit one by one; or,
d. the mechanism and the structure of the wired transmission electric energy metering information are composed of a digital pulse output end, a wired transmission cable and a digital pulse output end.
9. The electric energy metering secondary circuit comprehensive error testing device of claim 8, characterized in that: the wired electric energy metering information transmission mechanism of the device is one-way and one-way, and the structure of the device is as follows: the wired transmission electric energy metering information mechanism and the structure are formed by functionally connecting a sampling circuit, an amplifying circuit, a transmission cable, an interface circuit and a connector of electric energy metering information, before a movable connector of the interface circuit, a wired transmission extension of the device is formed, and a sampling part of the sampling circuit is arranged at a sampling part of a user electric energy meter; the fixed connector of the interface circuit is arranged on the device, namely an input and output mechanism of the electric energy metering information of the device.
10. The electric energy metering secondary circuit comprehensive error testing device of claim 9, characterized in that: the device's wired transmission electric energy measurement information mechanism one-way detailed structure have:
a. the mechanism and the structure of the wired transmission electric energy metering information are formed by connecting a pulse sampling circuit, a photoelectric isolation circuit, a differential output circuit, a transmission circuit, a differential input circuit, a photoelectric isolation circuit and a pulse input circuit one by one; or,
b. the mechanism and the structure for the wired transmission of the electric energy metering information are formed by connecting a pulse sampling circuit, an amplifying circuit, an electro-optical conversion interface circuit, a transmission optical fiber, a photoelectric conversion interface circuit, an amplifying circuit and a pulse input circuit one by one; or,
c. the mechanism and the structure for the wired transmission of the electric energy metering information are formed by connecting a digital sampling circuit, a digital amplifying circuit, a transmission circuit, an interface circuit and a digital input circuit one by one; or,
d. the mechanism and the structure for the wired transmission of the electric energy metering information are composed of a digital pulse output end, a wired transmission cable and a digital pulse input end.
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| CN 200620127248 CN2938135Y (en) | 2006-08-04 | 2006-08-04 | Device for detecting electric energy metering secondary loop comprehensive error |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944810A (en) * | 2012-12-12 | 2013-02-27 | 湖南省电力公司科学研究院 | Test device for secondary circuit zero line site of voltage transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944810A (en) * | 2012-12-12 | 2013-02-27 | 湖南省电力公司科学研究院 | Test device for secondary circuit zero line site of voltage transformer |
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