CN114062784A - Lightning arrester testing device and method and computer storage medium - Google Patents
Lightning arrester testing device and method and computer storage medium Download PDFInfo
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- CN114062784A CN114062784A CN202111349977.0A CN202111349977A CN114062784A CN 114062784 A CN114062784 A CN 114062784A CN 202111349977 A CN202111349977 A CN 202111349977A CN 114062784 A CN114062784 A CN 114062784A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/025—Measuring very high resistances, e.g. isolation resistances, i.e. megohm-meters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/08—Measuring resistance by measuring both voltage and current
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Abstract
The invention relates to the technical field of power equipment testing, and discloses a lightning arrester testing device, a lightning arrester testing method and a computer storage medium. The device comprises a direct-current high-voltage power supply generating module, a measuring module and a control module, wherein the measuring module comprises a current measuring unit, a voltage dividing unit and a voltage measuring unit, the direct-current high-voltage output of the direct-current high-voltage power supply generating module is controlled by the control module so as to obtain measuring results of the current measuring unit and the voltage measuring unit under different voltages, and then the insulation resistance value and the leakage current value of the tested lightning arrester are calculated according to the measuring results. The invention integrates the existing insulation resistance test instrument and the DC reference voltage test instrument into one device, realizes the insulation resistance test and the DC reference voltage test at one time, does not need repeated wiring in the test process, can reduce the transportation space, saves the labor and reduces the danger of the test personnel for high-altitude operation.
Description
Technical Field
The invention relates to the technical field of power equipment testing, in particular to a lightning arrester testing device and method and a computer storage medium.
Background
The lightning arrester is a widely used device in an electric power system, and is used for protecting other electric power devices from overvoltage damage, and the operation state of the lightning arrester is directly related to the stable operation of the electric power system. In order to monitor the state of the lightning arrester, the lightning arrester needs to be monitored in a live state or a power failure test at regular time.
The conventional tests in the lightning arrester power failure test project are an insulation resistance test and a direct current reference voltage test, and the principle of the insulation resistance test is that after a certain voltage (generally 2500V or 5000V) is applied to two ends of a lightning arrester, the leakage current of the lightning arrester is measured, the insulation resistance of the lightning arrester is calculated by test equipment, if the leakage current is greater than a specified value of a regulation, the lightning arrester is qualified, and otherwise, the lightning arrester is unqualified. The direct current reference voltage test is to apply a voltage continuously increased from 0 to the two ends of the lightning arrester, monitor the leakage current value flowing through the lightning arrester, record the voltage value at the moment when the leakage current reaches 1mA, namely the direct current reference voltage, then reduce the applied voltage to 75% of the direct current reference voltage, and record the leakage current. The DC reference voltage is kept within a certain reasonable range, and the leakage current is not more than 50 muA.
Therefore, the principle of the equivalent circuit of the insulation resistance test and the test of the direct current reference voltage test is the same, and the leakage current is measured after a certain voltage is applied. However, because the two tests have different judgment modes, the lightning arrester power failure test is carried out by adopting two different sets of instruments, namely the insulation resistance tester and the direct-current high-voltage generator in the prior art, and because the instruments are heavy in weight and large in size, the mode consumes manpower and occupies redundant transportation space. Because when the arrester is tested, the insulation resistance test is generally carried out firstly, and if the arrester is qualified, the direct current reference voltage test is carried out, two wiring processes are needed, the test process is more complicated, and the danger of high-altitude operation of testers is improved.
Disclosure of Invention
The invention provides a lightning arrester test device, a lightning arrester test method and a computer storage medium, and solves the technical problem that an existing lightning arrester test mode cannot perform an insulation resistance test and a direct current reference voltage test at one time.
The invention provides a lightning arrester testing device, which comprises a direct-current high-voltage power supply generation module, a measurement module and a control module, wherein the measurement module comprises a current measurement unit, a voltage division unit and a voltage measurement unit;
the direct-current high-voltage power supply generation module is used for outputting direct-current high voltage;
the current measuring unit is connected with the direct-current high-voltage power supply generating module in series and then is connected to the low-voltage end of the tested lightning arrester to measure the current of the tested lightning arrester;
the voltage division unit is connected with the direct-current high-voltage power supply generation module and is used for acquiring a primary voltage analog signal of the direct-current high-voltage power supply generation module and converting the primary voltage analog signal into a secondary voltage analog signal in proportion to the voltage and the phase of the primary voltage analog signal;
the voltage measuring unit is connected with the voltage dividing unit and is used for measuring the voltage of the secondary voltage analog signal;
the control module is connected with the output ends of the current measuring unit and the voltage measuring unit and is connected with the control signal input end of the direct-current high-voltage power supply generating module; the control module is used for controlling the direct-current high-voltage output of the direct-current high-voltage power supply generation module, and calculating the insulation resistance value and the leakage current value of the tested lightning arrester according to the current signal output by the current measuring unit and the voltage signal output by the voltage measuring unit.
According to a manner that can be realized by the first aspect of the present invention, the dc high voltage power generation module includes an inverter, a digital voltage regulator, a high voltage transformer and a rectification circuit that are connected in sequence;
the digital voltage regulator is used for generating a PWM waveform signal so as to control the inverter to output alternating-current voltage with adjustable amplitude through the PWM waveform signal;
the rectifying circuit is used for rectifying alternating-current voltage into direct-current voltage and outputting voltage required by the test of the tested lightning arrester.
According to one possible implementation of the first aspect of the invention, the digital voltage regulator further comprises a battery for supplying power to the digital voltage regulator.
According to one implementable manner of the first aspect of the present invention, the control module includes a control unit, an analog-to-digital conversion unit, a processing unit, and a display unit;
the control unit is used for sending a control signal to the direct-current high-voltage power supply generation module so as to control the direct-current high-voltage power supply generation module to output corresponding voltage;
the analog-to-digital conversion unit is connected with the processing unit and used for converting the current signal output by the current measuring unit and the voltage signal output by the voltage measuring unit into corresponding digital signals and inputting the digital signals to the processing unit;
the processing unit is used for calculating the insulation resistance value and the leakage current value of the tested lightning arrester;
and the display unit is connected with the processing unit and is used for displaying the insulation resistance and the leakage current of the tested lightning arrester.
According to a realisable version of the first aspect of the invention, the control unit is provided with a voltage setting subunit for generating the control signal.
According to one possible implementation manner of the first aspect of the present invention, the voltage setting subunit includes a plurality of keys, and the keys generate corresponding control signals when pressed.
According to an implementable manner of the first aspect of the present invention, the control module further comprises an alarm unit connected to the processing unit;
the alarm unit is used for sending a first alarm signal when the insulation resistance value of the tested lightning arrester exceeds a preset resistance threshold value, and sending a second alarm signal when the leakage current value exceeds a preset current threshold value.
A second aspect of the present invention provides a lightning arrester testing method based on the lightning arrester testing apparatus according to any one of the above-described modes, the method including:
sending a first control signal to a direct-current high-voltage power supply generation module so that the direct-current high-voltage power supply generation module outputs 30KV voltage;
obtaining the current measured by the current measuring unit and the voltage measured by the voltage measuring unit under the voltage of 30KV, and calculating the insulation resistance value of the tested lightning arrester according to the obtained current and voltage;
sending different control signals to the direct-current high-voltage power supply generation module at intervals so that the direct-current high-voltage power supply generation module gradually increases the output voltage from the preset lowest output voltage until the current measured by the current measurement unit is 1mA, and taking the voltage measured by the voltage measurement unit as direct-current reference voltage;
and sending a second control signal to the direct-current high-voltage power supply generation module so that the output voltage of the direct-current high-voltage power supply generation module is 75% of the direct-current reference voltage, and taking the current measured by the current measurement unit at the moment as the leakage current value of the tested lightning arrester.
A third aspect of the present invention provides an arrester testing apparatus, including:
a memory to store instructions; the instructions are instructions capable of realizing the lightning arrester test method;
a processor to execute the instructions in the memory.
A fourth aspect of the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a lightning arrester testing method as described above.
According to the technical scheme, the invention has the following advantages:
the device comprises a direct-current high-voltage power supply generating module, a measuring module and a control module, wherein the measuring module comprises a current measuring unit, a voltage dividing unit and a voltage measuring unit, the direct-current high-voltage output of the direct-current high-voltage power supply generating module is controlled by the control module so as to obtain measuring results of the current measuring unit and the voltage measuring unit under different voltages, and then the insulation resistance value and the leakage current value of the tested lightning arrester are calculated according to the measuring results; the invention integrates the existing insulation resistance test instrument and the DC reference voltage test instrument into one device, realizes the insulation resistance test and the DC reference voltage test at one time, does not need repeated wiring in the test process, can reduce the transportation space, saves the labor and reduces the danger of the test personnel for high-altitude operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic diagram of a lightning arrester testing apparatus according to an alternative embodiment of the present invention;
fig. 2 is a flowchart of a lightning arrester testing method according to an alternative embodiment of the present invention.
Description of the drawings:
1-a direct-current high-voltage power supply generation module; 2-a measurement module; 3-a control module; 21-a current measuring unit; 22-a voltage dividing unit; 23-voltage measuring unit.
Detailed Description
The embodiment of the invention provides a lightning arrester testing device, a lightning arrester testing method and a computer storage medium, which are used for solving the technical problem that an existing lightning arrester testing mode cannot perform an insulation resistance test and a direct current reference voltage test at one time.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below 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.
Referring to fig. 1, fig. 1 is a schematic diagram illustrating an arrester testing apparatus according to an embodiment of the present invention.
The invention provides a lightning arrester testing device, which comprises a direct-current high-voltage power supply generation module 1, a measurement module 2 and a control module 3, wherein the measurement module 2 comprises a current measurement unit 21, a voltage division unit 22 and a voltage measurement unit 23;
the direct-current high-voltage power supply generation module 1 is used for outputting direct-current high voltage;
the current measuring unit 21 is connected in series with the direct-current high-voltage power supply generating module 1 and then connected to the low-voltage end of the tested lightning arrester to measure the current of the tested lightning arrester;
the voltage dividing unit 22 is connected to the dc high-voltage power supply generating module 1, and is configured to collect a primary voltage analog signal of the dc high-voltage power supply generating module 1, and convert the primary voltage analog signal into a secondary voltage analog signal proportional to a voltage and a phase of the primary voltage analog signal;
the voltage measuring unit 23 is connected to the voltage dividing unit 22, and is configured to measure a voltage of the secondary voltage analog signal;
the control module 3 is connected with the output ends of the current measuring unit 21 and the voltage measuring unit 23, and is connected with the control signal input end of the direct-current high-voltage power supply generating module 1; the control module 3 is configured to control the dc high voltage output of the dc high voltage power supply generation module 1, and calculate an insulation resistance value and a leakage current value of the lightning arrester under test according to the current signal output by the current measurement unit 21 and the voltage signal output by the voltage measurement unit 23.
The voltage dividing unit 22 is arranged to convert the primary voltage into a small voltage signal proportional to the primary voltage and the phase, so that the measuring module 2 can measure the direct-current high voltage output by the direct-current high-voltage power supply generating module 1 by a method of serially connecting voltage dividing resistors according to the principle of serially connecting resistance voltage division, and the method is simple and convenient.
The function of the voltage dividing unit 22 can be realized by a resistive voltage divider, and the high voltage arm and the low voltage arm of the resistive voltage divider are both resistors. The shielding electrode in the resistive voltage divider can improve the electric field distribution condition and reduce the influence of stray capacitance.
In an implementation manner, the dc high-voltage power generation module 1 includes an inverter, a digital voltage regulator, a high-voltage transformer, and a rectification circuit, which are connected in sequence;
the digital voltage regulator is used for generating a PWM waveform signal so as to control the inverter to output alternating-current voltage with adjustable amplitude through the PWM waveform signal;
the rectifying circuit is used for rectifying alternating-current voltage into direct-current voltage and outputting voltage required by the test of the tested lightning arrester.
In the embodiment of the invention, the control circuit of the digital voltage regulator generates the PWM waveform signal with adjustable duty ratio, the inverter is controlled to output the alternating current voltage with adjustable amplitude through the PWM waveform signal, the alternating current voltage is further sent to the high-voltage transformer, and the alternating current voltage is converted into the direct current voltage through the rectifying circuit, so that the direct current negative high voltage in a stable range can be generated.
In one implementation, the digital voltage regulator further comprises a storage battery for supplying power to the digital voltage regulator. In a preferred embodiment, the battery is a 14.8V battery.
In an implementable manner, the control module 3 comprises a control unit, an analog-to-digital conversion unit, a processing unit and a display unit;
the control unit is used for sending a control signal to the direct-current high-voltage power supply generation module 1 so as to control the direct-current high-voltage power supply generation module 1 to output corresponding voltage;
the analog-to-digital conversion unit is connected with the processing unit, and is used for converting the current signal output by the current measuring unit 21 and the voltage signal output by the voltage measuring unit 23 into corresponding digital signals and inputting the digital signals into the processing unit;
the processing unit is used for calculating the insulation resistance value and the leakage current value of the tested lightning arrester;
and the display unit is connected with the processing unit and is used for displaying the insulation resistance and the leakage current of the tested lightning arrester.
The function of the processing unit may be implemented by a processor such as a CPU, for example, and the display unit may be a display screen, which is not limited in the embodiment of the present invention.
In an implementable manner, the control unit is provided with a voltage setting subunit for generating the control signal.
In one implementation, the voltage setting subunit includes a plurality of keys that generate corresponding control signals when pressed. As a preferred embodiment, the voltage setting subunit comprises seven keys corresponding to voltage test gears of 0.5kV, 1kV, 2.5kV, 5kV, 10kV, 20kV and 30kV, respectively. Through the form that sets up the button, can be convenient for the tester select correct voltage range according to actual need, and then switch each button as required to make direct current high voltage power supply generate module 1 and can carry out output voltage in 0.5kV, 1kV, 2.5kV, 5kV, 10kV, 20kV and 30kV and switch.
In another implementation manner, the voltage setting subunit is an interactive interface with a voltage input frame, and a tester can input a corresponding voltage through the voltage input frame, so that the voltage setting subunit triggers a corresponding control signal according to the input voltage.
In another implementation manner, the voltage setting subunit is a memory, and the memory stores a preset voltage setting program, and the voltage setting program can cause the control unit where the voltage setting subunit is located to send a corresponding control signal to the dc high-voltage power supply generation module 1.
By the mode, manual voltage switching operation is not needed, and a tester only needs to start the control unit, so that the control unit can automatically send corresponding control signals according to a preset voltage setting program, and automatic voltage switching is realized.
In an implementable manner, the control module 3 further comprises an alarm unit connected to the processing unit;
the alarm unit is used for sending a first alarm signal when the insulation resistance value of the tested lightning arrester exceeds a preset resistance threshold value, and sending a second alarm signal when the leakage current value exceeds a preset current threshold value.
In one embodiment, the preset current threshold is 50 μ Α.
Further, the display unit can also be used for displaying the alarm signal output by the alarm unit.
The invention also provides a lightning arrester test method based on the lightning arrester test device which can be realized in any one of the above modes.
Referring to fig. 2, fig. 2 is a flowchart illustrating a lightning arrester testing method according to an embodiment of the present invention.
The lightning arrester test method comprises the following steps:
s1, sending a first control signal to the direct-current high-voltage power supply generation module 1, so that the direct-current high-voltage power supply generation module 1 outputs 30KV voltage;
s2, obtaining the current measured by the current measuring unit 21 and the voltage measured by the voltage measuring unit 23 under the voltage of 30KV, and calculating the insulation resistance value of the tested lightning arrester according to the obtained current and voltage;
s3 sends different control signals to the dc high-voltage power supply generating module 1 at intervals, so that the dc high-voltage power supply generating module 1 gradually increases the output voltage from the preset lowest output voltage until the current measured by the current measuring unit 21 is 1mA, and then stops increasing the output voltage, and the voltage measured by the voltage measuring unit 23 at this time is used as the dc reference voltage;
s4 sends a second control signal to the dc high-voltage power supply generating module 1, so that the output voltage of the dc high-voltage power supply generating module 1 is 75% of the dc reference voltage, and the current measured by the current measuring unit 21 at this time is used as the leakage current value of the lightning arrester under test.
Further, the method further comprises:
and displaying the insulation resistance value and the leakage current value.
Further, the method further comprises:
when the insulation resistance value exceeds a preset resistance threshold value, a first alarm signal is sent out;
and sending a second alarm signal when the leakage current value exceeds a preset current threshold value.
The invention also provides a lightning arrester testing device, which comprises:
a memory to store instructions; the instructions are instructions capable of implementing the lightning arrester test method according to any one of the above embodiments;
a processor to execute the instructions in the memory.
The invention also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a lightning arrester testing method as described in any one of the above embodiments.
The above-described embodiment of the present invention integrates the tests of two items into one device by utilizing the principle that the test equivalent circuits of the insulation resistance test and the dc reference voltage test are the same. The test process of the invention does not need repeated wiring, can reduce the transportation space, save manpower and reduce the danger of the test personnel working aloft.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatuses, modules and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of 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, devices or units, and may be in an electrical, mechanical 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 network 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 removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A lightning arrester testing device is characterized by comprising a direct-current high-voltage power supply generation module, a measurement module and a control module, wherein the measurement module comprises a current measurement unit, a voltage division unit and a voltage measurement unit;
the direct-current high-voltage power supply generation module is used for outputting direct-current high voltage;
the current measuring unit is connected with the direct-current high-voltage power supply generating module in series and then is connected to the low-voltage end of the tested lightning arrester to measure the current of the tested lightning arrester;
the voltage division unit is connected with the direct-current high-voltage power supply generation module and is used for acquiring a primary voltage analog signal of the direct-current high-voltage power supply generation module and converting the primary voltage analog signal into a secondary voltage analog signal in proportion to the voltage and the phase of the primary voltage analog signal;
the voltage measuring unit is connected with the voltage dividing unit and is used for measuring the voltage of the secondary voltage analog signal;
the control module is connected with the output ends of the current measuring unit and the voltage measuring unit and is connected with the control signal input end of the direct-current high-voltage power supply generating module; the control module is used for controlling the direct-current high-voltage output of the direct-current high-voltage power supply generation module, and calculating the insulation resistance value and the leakage current value of the tested lightning arrester according to the current signal output by the current measuring unit and the voltage signal output by the voltage measuring unit.
2. The lightning arrester testing device according to claim 1, wherein the direct current high voltage power generating module comprises an inverter, a digital voltage regulator, a high voltage transformer and a rectifying circuit which are connected in sequence;
the digital voltage regulator is used for generating a PWM waveform signal so as to control the inverter to output alternating-current voltage with adjustable amplitude through the PWM waveform signal;
the rectifying circuit is used for rectifying alternating-current voltage into direct-current voltage and outputting voltage required by the test of the tested lightning arrester.
3. A lightning arrester testing apparatus according to claim 2 further comprising a battery for powering the digital voltage regulator.
4. A lightning arrester testing apparatus according to claim 1, wherein the control module comprises a control unit, an analog-to-digital conversion unit, a processing unit and a display unit;
the control unit is used for sending a control signal to the direct-current high-voltage power supply generation module so as to control the direct-current high-voltage power supply generation module to output corresponding voltage;
the analog-to-digital conversion unit is connected with the processing unit and used for converting the current signal output by the current measuring unit and the voltage signal output by the voltage measuring unit into corresponding digital signals and inputting the digital signals to the processing unit;
the processing unit is used for calculating the insulation resistance value and the leakage current value of the tested lightning arrester;
and the display unit is connected with the processing unit and is used for displaying the insulation resistance and the leakage current of the tested lightning arrester.
5. A lightning arrester testing device according to claim 4, characterized in that the control unit is provided with a voltage setting subunit for generating the control signal.
6. A lightning arrester testing device according to claim 5, characterized in that the voltage setting subunit comprises a plurality of keys which, when pressed, generate corresponding control signals.
7. The arrester testing apparatus of claim 4 wherein the control module further comprises an alarm unit connected to the processing unit;
the alarm unit is used for sending a first alarm signal when the insulation resistance value of the tested lightning arrester exceeds a preset resistance threshold value, and sending a second alarm signal when the leakage current value exceeds a preset current threshold value.
8. A lightning arrester testing method, characterized in that the method is based on a lightning arrester testing device according to any one of claims 1-7, the method comprising:
sending a first control signal to a direct-current high-voltage power supply generation module so that the direct-current high-voltage power supply generation module outputs 30KV voltage;
obtaining the current measured by the current measuring unit and the voltage measured by the voltage measuring unit under the voltage of 30KV, and calculating the insulation resistance value of the tested lightning arrester according to the obtained current and voltage;
sending different control signals to the direct-current high-voltage power supply generation module at intervals so that the direct-current high-voltage power supply generation module gradually increases the output voltage from the preset lowest output voltage until the current measured by the current measurement unit is 1mA, and taking the voltage measured by the voltage measurement unit as direct-current reference voltage;
and sending a second control signal to the direct-current high-voltage power supply generation module so that the output voltage of the direct-current high-voltage power supply generation module is 75% of the direct-current reference voltage, and taking the current measured by the current measurement unit at the moment as the leakage current value of the tested lightning arrester.
9. An arrester testing device, comprising:
a memory to store instructions; wherein the instructions are instructions that can implement the lightning arrester testing method according to claim 8;
a processor to execute the instructions in the memory.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out a lightning arrester testing method according to claim 8.
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| KR20180050158A (en) * | 2016-11-04 | 2018-05-14 | 한국전력공사 | Apparatus for supervising status of lightening arrester |
| CN107179492A (en) * | 2017-07-03 | 2017-09-19 | 北京航天常兴科技发展股份有限公司 | The resistive electric leakage electrical fire monitoring detection device of on-line insulation monitoring formula |
| CN207232314U (en) * | 2017-09-28 | 2018-04-13 | 湘潭市时代电气有限公司 | A kind of Insulation Inspection System of DC trolley locomotive rectifier power source |
| CN110118902A (en) * | 2019-04-04 | 2019-08-13 | 广州供电局有限公司 | Detect auxiliary device, detection system and detection method |
| CN110297169A (en) * | 2019-06-28 | 2019-10-01 | 广东电网有限责任公司 | A kind of 10kV metal oxide arrester integrated experiment device |
| CN111044871A (en) * | 2020-01-08 | 2020-04-21 | 广东电网有限责任公司 | Integrated 10kV zinc oxide arrester test system and method |
| CN213986651U (en) * | 2020-10-23 | 2021-08-17 | 华能西藏雅鲁藏布江水电开发投资有限公司 | Multi-state online monitoring system for lightning arrester |
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