CN111077360A - Target resistance live line measurement method and device and related components - Google Patents
Target resistance live line measurement method and device and related components Download PDFInfo
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- G01—MEASURING; TESTING
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Abstract
The application discloses a target resistance live line measurement method, which comprises the following steps: acquiring the current voltage of the equipment to be tested; judging whether the current voltage is zero voltage or not; and if so, measuring the target resistance of the equipment to be measured through a measuring circuit, wherein the target resistance is a resistance with zero-crossing alternating current. In this application, when the current voltage of the equipment that awaits measuring is zero voltage, recalculate the target resistance of the equipment that awaits measuring to avoid the voltage of the equipment that awaits measuring to produce the leakage current in measuring circuit, influence measuring result, this scheme can electrified target resistance of measuring the equipment that awaits measuring simultaneously, guarantees that electric power system supplies power in succession, and the reliability is high. The application also discloses a target resistance live measuring device, electronic equipment and a computer readable storage medium.
Description
Technical Field
The application relates to the field of electrical measurement, in particular to a target resistance live measurement method, a target resistance live measurement device and a related component.
Background
With the continuous updating and expansion of the electric equipment, the reliability and continuity of the power system and the high-voltage equipment are the key for the normal operation of the electric equipment, and the real-time measurement of the electric equipment is also indispensable. Electrical equipment such as cables, motors, generators, transformers, high-voltage switches, lightning arresters and the like need to measure the resistance to ground in real time to ensure the normal operation of these types of electrical equipment. If an electrified measuring scheme is adopted, the voltage of the electrical equipment can generate leakage current in a measuring circuit, the accuracy of a measuring result is influenced, and if a power-off measuring scheme is adopted, the continuous power supply of an electric power system is influenced, and the reliability of the electric power system is reduced.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The application aims to provide a target resistance live measurement method, a target resistance live measurement device, electronic equipment and a computer readable storage medium, which can avoid the situation that the voltage of equipment to be measured generates leakage current in a measurement circuit to influence a measurement result, and meanwhile, the scheme can measure the target resistance of the equipment to be measured in a live manner, so that continuous power supply of a power system is ensured, and the reliability is high.
In order to solve the above technical problem, the present application provides a method for measuring a target resistance charged value, including:
acquiring the current voltage of the equipment to be tested;
judging whether the current voltage is zero voltage or not;
and if so, measuring the target resistance of the equipment to be measured through a measuring circuit, wherein the target resistance is a resistance with zero-crossing alternating current.
Preferably, the process of determining whether the current voltage is zero voltage specifically includes:
and judging whether the current voltage is zero voltage or not through the photoelectric coupler.
Preferably, the process of measuring the target resistance of the device under test by the measurement circuit specifically includes:
and measuring the target resistance of the equipment to be measured by a measuring circuit according to a voltammetry method or a bridge method.
Preferably, after the target resistance of the device under test is measured by the measurement circuit, the target resistance live measurement method further includes:
and prompting information corresponding to the target resistance.
Preferably, after the presenting the information corresponding to the target resistance, the method for measuring the charged target resistance further includes:
and uploading the information to a cloud platform.
Preferably, after the target resistance of the device under test is measured by the measurement circuit, the target resistance live measurement method further includes:
judging whether the target resistance is in an alarm range;
if yes, generating alarm information;
correspondingly, the information comprises the alarm information.
Preferably, after determining whether the target resistance is within the alarm range, the method for measuring the charged target resistance further includes:
and when the target resistor is within the alarm range, cutting off a loop corresponding to the equipment to be tested.
In order to solve the above technical problem, the present application further provides a target resistance live line measurement device, including:
the monitoring module is used for acquiring the current voltage of the equipment to be tested;
the judging module is used for judging whether the current voltage is zero voltage or not, and if so, the measuring module is triggered;
and the measuring module is used for measuring the target resistance of the equipment to be measured through the measuring circuit.
In order to solve the above technical problem, the present application further provides an electronic device, including:
a memory for storing a computer program;
a processor for implementing the steps of the target resistance live measurement method as claimed in any one of the above when executing the computer program.
To solve the above technical problem, the present application further provides a computer-readable storage medium having a computer program stored thereon, the computer program, when executed by a processor, implementing the steps of the target resistance live measurement method as described in any one of the above.
The application provides a target resistance live line measurement method, which comprises the following steps: acquiring the current voltage of the equipment to be tested; judging whether the current voltage is zero voltage or not; and if so, measuring the target resistance of the equipment to be measured through a measuring circuit, wherein the target resistance is a resistance with zero-crossing alternating current. In practical application, by adopting the scheme of the application, when the current voltage of the equipment to be measured is zero voltage, the target resistance of the equipment to be measured is calculated again so as to avoid the voltage of the equipment to be measured from generating leakage current in a measuring circuit and influencing the measuring result, meanwhile, the target resistance of the equipment to be measured can be measured in an electrified way, the continuous power supply of a power system is ensured, and the reliability is high. The application also provides a target resistance live measuring device, electronic equipment and a computer readable storage medium.
Drawings
In order to more clearly illustrate the embodiments of the present application, the drawings needed for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
FIG. 1 is a flow chart illustrating the steps of a method for measuring the electrification of a target resistance according to the present disclosure;
fig. 2 is a schematic structural diagram of a voltage monitoring system provided in the present application;
fig. 3 is a schematic structural diagram of a measurement circuit provided in the present application;
FIG. 4 is a schematic structural diagram of a target resistance live measurement device provided in the present application;
fig. 5 is a schematic structural diagram of an electronic device provided in the present application.
Detailed Description
The core of the application is to provide a target resistance live measurement method, a device, electronic equipment and a computer readable storage medium, which can avoid the situation that the voltage of equipment to be measured generates leakage current in a measurement circuit to influence a measurement result, and meanwhile, the scheme can measure the target resistance of the equipment to be measured in a live manner, so that the continuous power supply of a power system is ensured, and the reliability is high.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all 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 application.
With the continuous updating and expansion of the electric equipment, the reliability and continuity of the power system and the high-voltage equipment are the key for the normal operation of the electric equipment, and the real-time measurement of the electric equipment is also indispensable. Most electrical devices require real-time measurement of their target resistance to ensure that these types of electrical devices are functioning properly. If an electrified measuring scheme is adopted, the voltage of the electrical equipment can generate leakage current in a measuring circuit, the accuracy of a measuring result is influenced, and if a power-off measuring scheme is adopted, continuous power supply cannot be ensured, and the reliability of a power system is reduced. Based on the problems of the related art, the present application provides a new target resistance live line measurement scheme through the following embodiments, which can achieve the purpose of avoiding the voltage of the device to be measured from generating leakage current in the measurement circuit and simultaneously ensuring the continuous power supply of the power system.
The following describes a target resistance live measurement method provided by the present application in detail.
Referring to fig. 1, fig. 1 is a flowchart illustrating steps of a target resistance live measurement method provided in the present application, where the target resistance live measurement method includes:
s101: acquiring the current voltage of the equipment to be tested;
the device to be tested may include, but is not limited to, electrical devices such as cables, motors, generators, transformers, high-voltage switches, and lightning arresters. The purpose of this step is to obtain the current voltage of the device to be measured, and consider that the non-zero voltage of the device to be measured may generate leakage current in the measurement circuit, so the purpose of this step is specifically to detect the zero crossing point of the voltage of the device to be measured, so as to detect the target resistance of the device to be measured at the zero crossing point, thereby avoiding the influence of the non-zero voltage on the measurement result, and it can be understood that the target resistance in this application may include a resistance to ground and other resistances with zero-crossing alternating current. Further, the corresponding measurement circuit may be selected according to the target resistance. In this step, the current voltage of the device to be tested may be acquired according to a preset acquisition cycle, or the current voltage of the device to be tested may be acquired after the acquisition instruction is received, where the trigger condition for acquiring the current voltage of the device to be tested is not limited.
Specifically, the current voltage of the equipment to be tested can be obtained through the voltage acquisition device in the step, the voltage acquisition device and the preset acquisition period can be selected according to actual engineering needs, and the method is not limited in the application.
S102: judging whether the current voltage is zero voltage, if so, executing S103;
s103: and measuring the target resistance of the equipment to be measured through the measuring circuit.
The purpose of S102 is to determine whether the current voltage is zero voltage, and it can be understood that when the current voltage of the device to be measured is zero voltage, no leakage current is generated in the measurement circuit, so that the zero voltage can be regarded as a trigger condition for measuring the target resistance of the device to be measured in this embodiment. And when the current voltage of the equipment to be tested is not zero, the measuring circuit is not triggered. In this embodiment, the target resistance of the device under test may be measured by, but not limited to, a voltammetry method, a bridge method, and the like. To sum up, this application carries out the measurement of target resistance when the current voltage of equipment to be measured is in voltage zero, because there is not the influence of non-zero voltage, consequently, the measuring result accuracy is higher, and simultaneously, this embodiment need not the outage measurement, and all steps are all electrified and are carried out, have guaranteed electric power system's power supply continuity.
This embodiment can judge whether the present voltage of equipment to be measured is zero voltage through the voltage monitoring system including photoelectric coupler specifically, and photoelectric coupler has good isolation to the input, output signal of telecommunication. Referring to fig. 2, fig. 2 is a schematic structural diagram of a voltage monitoring system provided in the present application, where the voltage monitoring device includes: the device comprises a first photoelectric coupler U1, a second photoelectric coupler U2, a first resistor R1 and a second resistor R2, wherein the input ends of the first photoelectric coupler U1 and the second photoelectric coupler U2 are connected with a device to be tested, and the output ends of the first photoelectric coupler U1 and the second photoelectric coupler U2 are connected with a measuring circuit so as to output a Zero voltage indication signal Zero to control the measuring circuit. It can be understood that when the voltages at the input ends of the two photocouplers are Zero (close to Zero), the light emitting diode in the photocoupler does not emit light, the phototriode in the photocoupler is turned off, that is, the output end of the photocoupler is turned off, and a Zero-voltage indicating signal Zero is output, wherein the Zero-voltage indicating signal Zero is a high-level signal.
Specifically, the structure of the measurement circuit can be shown in fig. 3, and includes an isolating switch S1 and a resistance measurement module M1, where the Zero-voltage indication signal Zero is used to control the conduction of the isolating switch S1, so as to control the resistance measurement module M1 to operate to measure the real-time resistance value of the device under test. The resistance measurement module M1 may specifically include a collection circuit, an amplification circuit, and a control unit, where the collection circuit is configured to collect a voltage of the device to be tested, the amplification circuit is configured to amplify the collected voltage according to a preset rule, and the control unit calculates a target resistance of the device to be tested according to the voltage processed by the amplification circuit.
The amplifying circuit can be flexibly designed according to the signal amplitude of the acquisition circuit and the signal amplitude required by the control unit, and the application is not specifically limited herein.
The application provides a target resistance live line measurement method, which comprises the following steps: acquiring the current voltage of the equipment to be tested; judging whether the current voltage is zero voltage or not; and if so, measuring the target resistance of the equipment to be measured through the measuring circuit, wherein the target resistance is a resistance with zero-crossing alternating current. In practical application, by adopting the scheme of the application, when the current voltage of the equipment to be measured is zero voltage, the target resistance of the equipment to be measured is calculated again so as to avoid the voltage of the equipment to be measured from generating leakage current in a measuring circuit and influencing the measuring result, meanwhile, the target resistance of the equipment to be measured can be measured in an electrified way, the continuous power supply of a power system is ensured, and the reliability is high.
On the basis of the above-described embodiment:
as a preferred embodiment, after measuring the target resistance of the device under test by the measuring circuit, the target resistance live measurement method further includes:
information corresponding to the target resistance is presented.
Specifically, after the target resistance of the device to be measured is measured, information corresponding to the target resistance is sent to the UI system for display so that a user can view the information, where the information specifically includes a specific numerical value of the target resistance.
As a preferred embodiment, after prompting the information corresponding to the target resistance, the target resistance live measurement method further includes:
and uploading the information to the cloud platform.
Specifically, after the target resistance of the equipment to be tested is measured, the information corresponding to the target resistance is uploaded to the cloud platform through the communication module, so that a user can check the information conveniently, data statistics is facilitated, and data support is provided for subsequent maintenance and replacement of the electrical equipment. The communication module may specifically be a communication module such as WiFi or ethernet.
As a preferred embodiment, after measuring the target resistance of the device under test by the measuring circuit, the target resistance live measurement method further includes:
judging whether the target resistance is in an alarm range;
if yes, generating alarm information;
accordingly, the information includes alarm information.
As a preferred embodiment, after determining whether the target resistance is within the alarm range, the target resistance live measurement method further includes:
and when the target resistor is within the alarm range, cutting off a loop corresponding to the equipment to be tested.
Specifically, there may be operations of setting parameters such as an alarm range, a communication address, factory settings, etc. before executing this step, after obtaining a measured value of a target resistance of the device to be tested, the measured value is compared with a preset alarm range, if the measured value is within the preset alarm range, alarm information for prompting a user is generated, and operations of displaying the alarm information through a UI system, uploading the alarm information to a cloud platform, etc. are executed, and meanwhile, in order to improve the security, a dangerous loop should be cut off through a contactor, a relay, etc., the device to be tested is protected, so as to avoid hidden dangers.
It can be understood that the UI system may include a display module and a key module, and the display module displays information corresponding to the target resistor, and the display module and the key module set parameters such as an alarm resistance value, a communication address, factory settings, and the like.
Specifically, the scheme of the application is described by taking the measurement of the ground insulation resistance of the mains supply as an example, firstly setting the alarm range to be less than 30K Ω, the communication address 01, factory setting and other system parameters, then storing data, initializing the system, then detecting the voltage of the device to be detected, calculating the ground resistance of the device to be detected when the voltage is detected to be at a zero crossing point, if the detected ground resistance is greater than 30K Ω, re-detecting whether the alternating current of the device to be detected is at the zero crossing point, when the detected target resistance is less than 30K Ω, immediately sending alarm information, cutting off 220V AC power supply, finally uploading and storing the alarm information, recording the alarm information as an event, and facilitating subsequent query.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a target resistance live line measurement apparatus provided in the present application, including:
the monitoring module 1 is used for acquiring the current voltage of the equipment to be tested;
the judging module 2 is used for judging whether the current voltage is zero voltage or not, and if so, the measuring module 3 is triggered;
and the measuring module 3 is used for measuring a target resistance of the equipment to be measured through the measuring circuit, wherein the target resistance is a resistance with zero-crossing alternating current.
Therefore, in the embodiment, when the current voltage of the device to be measured is zero, the target resistance of the device to be measured is calculated so as to prevent the voltage of the device to be measured from generating leakage current in the measuring circuit and affecting the measuring result.
As a preferred embodiment, the determining module 2 is specifically configured to:
and judging whether the current voltage is zero voltage or not through the photoelectric coupler.
As a preferred embodiment, the measurement module 3 is specifically configured to:
and measuring the target resistance of the equipment to be measured by a measuring circuit according to a voltammetry method or a bridge method.
As a preferred embodiment, the target resistance live measurement device further includes:
and the prompting module is used for prompting information corresponding to the target resistance.
As a preferred embodiment, the target resistance live measurement device further includes:
and the uploading module is used for uploading the information to the cloud platform.
As a preferred embodiment, the target resistance live measurement device further includes:
the monitoring module 1 is used for judging whether the target resistance is in an alarm range, and if so, generating alarm information;
accordingly, the information includes alarm information.
As a preferred embodiment, the monitoring module 1 is further configured to:
and when the target resistor is within the alarm range, cutting off a loop corresponding to the equipment to be tested.
On the other hand, the present application also provides an electronic device, as shown in fig. 5, which shows a schematic structural diagram of an electronic device according to an embodiment of the present application, where the electronic device 2100 according to the embodiment may include: a processor 2101 and a memory 2102.
Optionally, the electronic device may further comprise a communication interface 2103, an input unit 2104 and a display 2105 and a communication bus 2106.
The processor 2101, the memory 2102, the communication interface 2103, the input unit 2104, the display 2105, and the like communicate with each other via the communication bus 2106.
In the embodiment of the present application, the processor 2101 may be a Central Processing Unit (CPU), an application specific integrated circuit (asic), a digital signal processor, an off-the-shelf programmable gate array (fpga) or other programmable logic device.
The processor may call a program stored in the memory 2102. Specifically, the processor may perform operations performed on the electronic device side in the following embodiments of the target resistance live measurement method.
The memory 2102 stores one or more programs, which may include program code including computer operating instructions, and in this embodiment, at least one program for implementing the following functions is stored in the memory:
acquiring the current voltage of the equipment to be tested;
judging whether the current voltage is zero voltage or not;
and if so, measuring the target resistance of the equipment to be measured through the measuring circuit, wherein the target resistance is a resistance with zero-crossing alternating current.
Therefore, in the embodiment, when the current voltage of the device to be measured is zero voltage, the target resistance of the device to be measured is calculated so as to prevent the current voltage of the device to be measured from generating leakage current in the measuring circuit and affecting the measuring result.
In one possible implementation, the memory 2102 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function (such as a target resistance calculation function, etc.), and the like; the storage data area may store data created according to the use of the computer.
Further, the memory 2102 may include high speed random access memory, and may also include non-volatile memory, such as at least one disk storage device or other volatile solid state storage device.
The communication interface 2103 may be an interface of a communication module, such as an interface of a GSM module.
The present application may also include a display 2104 and an input unit 2105, among others.
Of course, the structure of the internet of things device shown in fig. 5 does not constitute a limitation on the internet of things device in the embodiment of the present application, and in practical applications, the electronic device may include more or less components than those shown in fig. 5, or some components in combination.
In another aspect, the present application also provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method for measuring resistance charging as any one of the above items.
The computer-readable storage medium provided by the present application has the same advantageous effects as the above-mentioned target resistance live measurement method.
For an introduction of a computer-readable storage medium provided in the present application, please refer to the above embodiments, which are not described herein again.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method for measuring a target resistance live line, comprising:
acquiring the current voltage of the equipment to be tested;
judging whether the current voltage is zero voltage or not;
and if so, measuring the target resistance of the equipment to be measured through a measuring circuit, wherein the target resistance is a resistance with zero-crossing alternating current.
2. The target resistance live measurement method according to claim 1, wherein the process of determining whether the current voltage is zero voltage specifically comprises:
and judging whether the current voltage is zero voltage or not through the photoelectric coupler.
3. The target resistance live measurement method according to claim 1, wherein the process of measuring the target resistance of the device under test by the measurement circuit specifically comprises:
and measuring the target resistance of the equipment to be measured by a measuring circuit according to a voltammetry method or a bridge method.
4. The target resistance live measurement method according to any one of claims 1 to 3, wherein after the target resistance of the device under test is measured by the measurement circuit, the target resistance live measurement method further comprises:
and prompting information corresponding to the target resistance.
5. The method for measuring charged target resistance according to claim 4, wherein after the prompting the information corresponding to the target resistance, the method further comprises:
and uploading the information to a cloud platform.
6. The target resistance live measurement method according to claim 4, wherein after the target resistance of the device under test is measured by the measurement circuit, the target resistance live measurement method further comprises:
judging whether the target resistance is in an alarm range;
if yes, generating alarm information;
correspondingly, the information comprises the alarm information.
7. The method for measuring the charged target resistance according to claim 6, wherein after determining whether the target resistance is within an alarm range, the method further comprises:
and when the target resistor is within the alarm range, cutting off a loop corresponding to the equipment to be tested.
8. A target resistance live measurement device, comprising:
the monitoring module is used for acquiring the current voltage of the equipment to be tested;
the judging module is used for judging whether the current voltage is zero voltage or not, and if so, the measuring module is triggered;
the measuring module is used for measuring a target resistance of the equipment to be measured through a measuring circuit, wherein the target resistance is a resistance with zero-crossing alternating current.
9. An electronic device, comprising:
a memory for storing a computer program;
a processor for carrying out the steps of the target resistance live measurement method according to any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the target resistance live measurement method according to any one of claims 1-7.
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| US5014011A (en) * | 1988-05-31 | 1991-05-07 | Ford Motor Company | Capacitance measuring apparatus with means for nulling the resistive component |
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| CN106154114A (en) * | 2016-08-03 | 2016-11-23 | 四川网达科技有限公司 | Fault testing apparatus and method |
| CN108508270A (en) * | 2018-04-08 | 2018-09-07 | 佛山科学技术学院 | A kind of resistance measuring circuit |
| CN109839539A (en) * | 2017-11-27 | 2019-06-04 | 云南电网有限责任公司瑞丽供电局 | A kind of dynamic resistance of high-voltage circuit breaker measurement method |
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| US5014011A (en) * | 1988-05-31 | 1991-05-07 | Ford Motor Company | Capacitance measuring apparatus with means for nulling the resistive component |
| CN104640053A (en) * | 2015-01-19 | 2015-05-20 | 矽力杰半导体技术(杭州)有限公司 | Direct-current impedance detecting method of loudspeaker, circuit and D type audio frequency amplifier |
| CN106154114A (en) * | 2016-08-03 | 2016-11-23 | 四川网达科技有限公司 | Fault testing apparatus and method |
| CN109839539A (en) * | 2017-11-27 | 2019-06-04 | 云南电网有限责任公司瑞丽供电局 | A kind of dynamic resistance of high-voltage circuit breaker measurement method |
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