CN109901090B - Measurement and control equipment of transformer substation - Google Patents
Measurement and control equipment of transformer substation Download PDFInfo
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- CN109901090B CN109901090B CN201910233276.7A CN201910233276A CN109901090B CN 109901090 B CN109901090 B CN 109901090B CN 201910233276 A CN201910233276 A CN 201910233276A CN 109901090 B CN109901090 B CN 109901090B
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
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- 238000012795 verification Methods 0.000 abstract description 7
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- 230000008878 coupling Effects 0.000 description 3
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- 238000005034 decoration Methods 0.000 description 2
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- 238000012806 monitoring device Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
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Abstract
The invention discloses a measuring and controlling device of a transformer substation. Wherein, this measurement and control equipment of transformer substation includes: observe and control screen remote control terminal for traditional the verification that carries out of supervisory equipment and telemechanical equipment after upgrading, wherein, supervisory equipment and telemechanical equipment after upgrading are for the equipment that uses with the transformer substation cooperation, observe and control screen remote control terminal includes: a breakable terminal row and a test jack; the pilot lamp is connected with observing and controling the screen remote control terminal, under the inboard remote control contact condition of observing and controling the screen remote control terminal and switching on, sends predetermined signal, wherein, predetermined signal is used for instructing monitoring state. The invention solves the technical problem of lower safety of the monitoring mode of the remote control outlet of the transformer substation system in the related technology.
Description
Technical Field
The invention relates to the technical field of measurement and control, in particular to measurement and control equipment of a transformer substation.
Background
At present, due to the reasons that the functions of some existing operating equipment of part of transformer substations cannot meet new technical standards in the operating period, spare parts are insufficient due to updating and upgrading of products of manufacturers, and the like, the background of a monitoring system and a telecontrol device need to be upgraded and replaced. After the equipment is upgraded, the telecontrol forwarding library, the monitoring background data and the graph need to be edited and transmission verified respectively.
According to the existing technical scheme and the function of manufacturer equipment, after the database is reconfigured, in the process of carrying out remote control function verification, a remote control loop breakable terminal needs to be disconnected, and the correctness of remote control configuration is verified by measuring the conduction mode of a remote control contact inside a disconnected terminal row.
Because the external meter is used for conducting measurement, if field personnel have operation errors, the measurement is carried out on the outer side of the disconnected terminal row, one-time equipment misoperation can occur, and the power grid accident is caused. And the existing used sound alarm mode after conduction is easy to have misjudgment on the site with larger noise.
Aiming at the problem that the mode of monitoring the remote control outlet of the transformer substation system in the related technology has low safety, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a measurement and control device of a transformer substation, which at least solves the technical problem of low safety in a mode of monitoring a remote control outlet of a transformer substation system in the related technology.
According to an aspect of an embodiment of the present invention, there is provided a measurement and control device of a substation, including: observe and control screen remote control terminal for carry out tradition to supervisory equipment and telemechanical equipment after the upgrading and verify, wherein, supervisory equipment and telemechanical equipment after the upgrading are for the equipment that uses with the transformer substation cooperation, observe and control screen remote control terminal includes: a breakable terminal row and a test jack; the pilot lamp with observe and control the connection of screen remote control terminal observe and control under the inboard remote control contact of screen remote control terminal and switch on, send predetermined signal, wherein, predetermined signal is used for instructing monitoring status.
Optionally, the trial jacks are respectively located at both sides of the breakable terminal row.
Optionally, observe and control screen remote control terminal and include multiunit remote control assembly, wherein, multiunit remote control assembly averagely divide into two sets of arranging observe and control screen remote control terminal's both sides, each group's remote control assembly in the multiunit remote control assembly all includes: the circuit comprises a positive electrode, a closing loop and an opening loop.
Optionally, a partition plate is disposed between the positive electrode of each of the plurality of groups of remote control assemblies and the opening circuit or the closing circuit.
Optionally, the measurement and control device of the substation further includes: and the test contact pin is matched with the test jack for use, wherein the test contact pin is made of copper.
Optionally, the measurement and control device of the substation further includes: the battery box, wherein, battery is provided with in the battery box, the battery is button cell.
Optionally, the measurement and control device of the substation further includes: and the anode of the diode is connected with the anode of the battery, and the cathode of the diode is connected with the remote joint node and the remote branch node of the measurement and control equipment.
Optionally, the reverse withstand voltage of the diode is greater than 500V.
Optionally, the indicator light comprises: the first indicator light and the second indicator light, wherein one end of the first indicator light is connected with the negative pole of the battery, and the other end of the first indicator light is connected with the remote joint; one end of the second indicator light is connected with the negative electrode of the battery, and the other end of the second indicator light is connected with the remote tapping point.
Optionally, the trial pins are 8mm in length.
In the embodiment of the present invention, the traditional verification of the upgraded monitoring device and the upgraded telemechanical device is performed by using the remote control terminal of the measurement and control screen, wherein the upgraded monitoring device and the upgraded telemechanical device are devices used in cooperation with a transformer substation, and the remote control terminal of the measurement and control screen includes: a breakable terminal row and a test jack; and an indicator light connected with the remote control terminal of the measurement and control screen is used for sending a predetermined signal under the condition that a remote control contact on the inner side of the remote control terminal of the measurement and control screen is conducted, wherein the predetermined signal is used for indicating a monitoring state. In the embodiment of the invention, the voice signal prompt when the measurement remote control contact in the existing measurement and control equipment is conducted is converted into the light source prompt, so that the display is more visual, the verification state can be visually observed even in a site with higher noise, the reliability of verifying the state of the monitoring equipment and the telecontrol equipment of the transformer substation after being upgraded is improved, and the technical problem of lower safety in a monitoring mode of a remote control outlet of a transformer substation system in the related technology is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a schematic view of a measurement and control device of a substation according to an embodiment of the invention;
fig. 2 is a schematic layout diagram of remote control terminals of a measurement and control screen of a substation according to an embodiment of the present invention;
fig. 3 is a structural diagram of an electrical circuit of a measurement and control device of a substation according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
According to an aspect of an embodiment of the present invention, there is provided a measurement and control device of a substation, fig. 1 is a schematic diagram of a measurement and control device of a substation according to an embodiment of the present invention, and as shown in fig. 1, a measurement and control device 10 of a substation includes: observe and control screen remote control terminal 11 for traditional verification of carrying on of supervisory equipment and telemechanical equipment after the upgrading, wherein, supervisory equipment and telemechanical equipment after the upgrading are for the equipment that uses with the transformer substation cooperation, observe and control screen remote control terminal includes: a breakable terminal row and a test jack; and the indicator lamp 13 is connected with the remote control terminal 11 of the measurement and control screen, and sends out a predetermined signal under the condition that a remote control contact on the inner side of the remote control terminal of the measurement and control screen is conducted, wherein the predetermined signal is used for indicating a monitoring state. In the embodiment of the invention, the voice signal prompt when the measurement remote control contact in the existing measurement and control equipment is conducted is converted into the light source prompt, so that the display is more visual, the verification state can be visually observed even in a site with higher noise, the reliability of verifying the state of the monitoring equipment and the telecontrol equipment of the transformer substation after being upgraded is improved, and the technical problem of lower safety in a monitoring mode of a remote control outlet of a transformer substation system in the related technology is solved.
As an alternative embodiment, the trial jacks are located on both sides of the breakable terminal row, respectively.
Preferably, observe and control screen remote control terminal and include multiunit remote control assembly, wherein, multiunit remote control assembly averagely divide into two sets of both sides of arranging at observing and controlling screen remote control terminal, and each group's remote control assembly in the multiunit remote control assembly all includes: the circuit comprises a positive electrode, a closing loop and an opening loop.
Fig. 2 is a schematic layout diagram of remote control terminals of a measurement and control screen of a transformer substation according to an embodiment of the present invention, and as shown in fig. 2, test jacks are arranged on two sides of a breakable terminal strip, and three groups of remote control assemblies, namely, a first group of remote control assemblies, a second group of remote control assemblies, and a third group of remote control assemblies, are uniformly distributed on the inner side of the breakable terminal strip; three groups of remote control assemblies, namely a first group of remote control assemblies, a second group of remote control assemblies and a third group of remote control assemblies, are uniformly distributed on the outer side of the breakable terminal row. Each group of remote control assemblies consists of a positive pole, a closing loop and an opening loop.
As an alternative embodiment, a partition plate is disposed between the positive electrode of each of the plurality of groups of remote control assemblies and the opening circuit or the closing circuit. The short circuit can be prevented through the partition plate, so that the equipment does not move.
In addition, the broken terminal row can cross over four gears along the running length, meanwhile, a corresponding second gear is a non-contact pin insulating module, and the first group, the third group and the fourth group corresponding to each group of remote control assemblies are all provided with contact pins which can be inserted into the inner side test jacks of the terminal row. The testing jacks on the remote control terminal of the measurement and control screen correspond to the remote control assemblies respectively, every four testing jacks correspond to one group of remote control assemblies, each group of remote control assemblies correspond to four testing jacks respectively, wherein the positive pole in each group of remote control assemblies corresponds to the first jack of the four testing jacks, the second jack is set to be a pin-free insulating module, the third jack corresponds to a closing loop in each group of remote control assemblies, and the fourth jack corresponds to an opening loop in each group of remote control assemblies.
It should be noted that, in order to prevent the test pin from being inserted into the test jack outside the breakable terminal row to cause a malfunction of the device, a reverse non-return loop may be designed in the measurement and control device.
As an optional embodiment, the measurement and control device of the substation further includes: and the test contact pin is matched with the test jack for use, wherein the test contact pin is made of copper.
Preferably, the measurement and control equipment of the substation further includes: the battery box, wherein, battery are button cell in the battery box inside is provided with the battery.
As an optional embodiment, the measurement and control device of the substation further includes: and the anode of the diode is connected with the anode of the battery, and the cathode of the diode is connected with the remote joint node and the remote branch node of the measurement and control equipment.
Preferably, the reverse withstand voltage of the diode is more than 500V.
As an alternative embodiment, the indicator light comprises: the battery comprises a first indicator light and a second indicator light, wherein one end of the first indicator light is connected with the negative electrode of the battery, and the other end of the first indicator light is connected with the remote joint; one end of the second indicator light is connected with the negative pole of the battery, and the other end is connected with the remote tapping point.
Optionally, the length of the trial pins is 8 mm.
Fig. 3 is a structural diagram of an electrical circuit of the measurement and control device of the substation according to the embodiment of the present invention, and as shown in fig. 3, the left side of the dotted line is the electrical circuit of the measurement and control device of the substation, and the right side of the dotted line is an electrical circuit diagram of an internal remote control circuit of the measurement and control device of the substation. As shown in fig. 3, the battery is a 3V button battery, the anode of the battery is connected to the anode of the diode, and the cathode of the battery is connected to one end of the first indicator light and one end of the second indicator light. The cathode of the diode is connected to the remote joint of the measurement and control equipment and the remote tapping point of the measurement and control equipment. In addition, the other ends of the first indicator light and the second indicator light are connected with the remote joint point and the remote tapping point.
It should be noted that the outer layer of the measurement and control equipment of the transformer substation is made of insulating corrosion-resistant hard plastic material, and the inner conductor is made of 0.8mm flexible conductor.
The measurement and control equipment of the transformer substation provided by the embodiment of the invention can reduce the occurrence probability of power grid accidents caused by misoperation of personnel, can solve the occurrence of noise field misjudgment, has more visual prompt and simpler and more convenient operation, and improves the verification efficiency. Particularly, the optical display replaces the sound display, so that the prompt is more accurate on the noise site, and the adaptability is stronger; reverse non-return is realized through the diode, and even under the condition of wrong inner side and wrong outer side, a loop short circuit can not be caused, so that misoperation is prevented.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A measurement and control equipment of a transformer substation is characterized by comprising:
observe and control screen remote control terminal for carry out tradition to supervisory equipment and telemechanical equipment after the upgrading and verify, wherein, supervisory equipment and telemechanical equipment after the upgrading are for the equipment that uses with the transformer substation cooperation, observe and control screen remote control terminal includes: a breakable terminal row and a test jack;
the indicator light is connected with the remote control terminal of the measurement and control screen, and sends out a preset signal under the condition that a remote control contact inside the remote control terminal of the measurement and control screen is conducted, wherein the preset signal is used for indicating a monitoring state;
wherein, observe and control screen remote control terminal and include multiunit remote control assembly, wherein, multiunit remote control assembly averagely divide into two sets of arranging observe and control screen remote control terminal's both sides, each group's remote control assembly in the multiunit remote control assembly all includes: the circuit comprises a positive electrode, a closing loop and an opening loop;
a partition plate is arranged between the anode of each group of remote control assemblies in the multiple groups of remote control assemblies and the opening loop or the closing loop;
wherein, the measurement and control equipment of transformer substation still includes: the battery box is internally provided with a battery, and the battery is a button battery;
wherein, still include: and the anode of the diode is connected with the anode of the battery, and the cathode of the diode is connected with the remote joint node and the remote branch node of the measurement and control equipment.
2. The measurement and control device of claim 1, wherein the test jacks are located on either side of the breakable terminal row.
3. The measurement and control device of claim 1, further comprising: and the test contact pin is matched with the test jack for use, wherein the test contact pin is made of copper.
4. The measurement and control device according to claim 1, wherein the diode has a reverse withstand voltage of more than 500V.
5. The measurement and control device of claim 1, wherein the indicator light comprises: the first indicator light and the second indicator light, wherein one end of the first indicator light is connected with the negative pole of the battery, and the other end of the first indicator light is connected with the remote joint; one end of the second indicator light is connected with the negative electrode of the battery, and the other end of the second indicator light is connected with the remote tapping point.
6. The measurement and control device of claim 3, wherein the test pins are 8mm in length.
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CN201910233276.7A CN109901090B (en) | 2019-03-26 | 2019-03-26 | Measurement and control equipment of transformer substation |
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Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1490629A (en) * | 2001-12-10 | 2004-04-21 | ������������ʽ���� | Correcting method, quality checking method for electronic component and characteristic measuring system |
CN202495807U (en) * | 2012-03-26 | 2012-10-17 | 天津市三源电力设备制造有限公司 | Remote centralized measurement and control system for power distribution network |
CN204156609U (en) * | 2014-11-07 | 2015-02-11 | 国家电网公司 | Unattended substation remote control/remote signaling function on-Line Monitor Device |
CN105006891A (en) * | 2015-07-06 | 2015-10-28 | 国电南瑞科技股份有限公司 | On-line visual remote control terminal and method used for transformer station background upgrading |
CN205120850U (en) * | 2015-09-29 | 2016-03-30 | 浙江省送变电工程公司 | Primary equipment of transformer substation state analogue means |
CN205389138U (en) * | 2016-02-04 | 2016-07-20 | 国家电网公司 | Intelligent substation simulation main website integrated test system |
CN205846862U (en) * | 2016-06-01 | 2016-12-28 | 国网河北省电力公司电力科学研究院 | A kind of synthetic automatic device for conventional substation detects device |
US9581624B2 (en) * | 2014-08-19 | 2017-02-28 | Southern States, Llc | Corona avoidance electric power line monitoring, communication and response system |
CN206742584U (en) * | 2017-05-20 | 2017-12-12 | 国网山西省电力公司阳泉供电公司 | Portable protection measurement and control signal verifier |
CN207867709U (en) * | 2018-02-08 | 2018-09-14 | 广西电网有限责任公司桂林供电局 | Transformer substation remote-control exit tester based on wireless telecommunications |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7996171B2 (en) * | 2005-01-27 | 2011-08-09 | Electro Industries/Gauge Tech | Intelligent electronic device with broad-range high accuracy |
DE102014018809A1 (en) * | 2014-12-19 | 2016-06-23 | Emh Metering Gmbh & Co. Kg | Transmission via a power grid with modulable consumer and electricity meter |
-
2019
- 2019-03-26 CN CN201910233276.7A patent/CN109901090B/en active Active
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1490629A (en) * | 2001-12-10 | 2004-04-21 | ������������ʽ���� | Correcting method, quality checking method for electronic component and characteristic measuring system |
CN202495807U (en) * | 2012-03-26 | 2012-10-17 | 天津市三源电力设备制造有限公司 | Remote centralized measurement and control system for power distribution network |
US9581624B2 (en) * | 2014-08-19 | 2017-02-28 | Southern States, Llc | Corona avoidance electric power line monitoring, communication and response system |
CN204156609U (en) * | 2014-11-07 | 2015-02-11 | 国家电网公司 | Unattended substation remote control/remote signaling function on-Line Monitor Device |
CN105006891A (en) * | 2015-07-06 | 2015-10-28 | 国电南瑞科技股份有限公司 | On-line visual remote control terminal and method used for transformer station background upgrading |
CN205120850U (en) * | 2015-09-29 | 2016-03-30 | 浙江省送变电工程公司 | Primary equipment of transformer substation state analogue means |
CN205389138U (en) * | 2016-02-04 | 2016-07-20 | 国家电网公司 | Intelligent substation simulation main website integrated test system |
CN205846862U (en) * | 2016-06-01 | 2016-12-28 | 国网河北省电力公司电力科学研究院 | A kind of synthetic automatic device for conventional substation detects device |
CN206742584U (en) * | 2017-05-20 | 2017-12-12 | 国网山西省电力公司阳泉供电公司 | Portable protection measurement and control signal verifier |
CN207867709U (en) * | 2018-02-08 | 2018-09-14 | 广西电网有限责任公司桂林供电局 | Transformer substation remote-control exit tester based on wireless telecommunications |
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