CN112858812B - Lightning arrester service performance evaluation method under extreme complex environment - Google Patents
Lightning arrester service performance evaluation method under extreme complex environment Download PDFInfo
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1236—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of surge arresters
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Abstract
The application shows that under an extremely complex environmentFirstly, building a platform for testing the service performance of the arrester under an extremely complex environment; based on the platform, carrying out a leakage current test of the lightning arrester in an extremely complex environment; calculating a pollution distortion influence factor P according to the simulation working condition of the extremely complex environmenttTemperature deviation coefficient TtWater vapor content performance factor HtAnd finally, evaluating the service performance of the lightning arrester in the extreme complex environment by using the service performance evaluation coefficient alpha. The invention can effectively simulate the extreme complex working condition of the arrester during the service period, and can evaluate the service performance of the arrester which is in service in extreme severe environment for a long time, thereby providing further guidance suggestion for replacement and regular maintenance of the arrester.
Description
Technical Field
The invention relates to the field of performance evaluation of lightning arresters, in particular to a method for evaluating the service performance of a lightning arrester in an extremely complex environment.
Background
Lightning is a frequent natural disaster. The lightning arrester not only seriously threatens the life safety of people, but also can cause great harm to national defense and many departments of national economy such as aviation, communication, electric power, buildings and the like, and the lightning arrester is used as indispensable lightning protection equipment in a power transmission line system and a transformer substation, and the importance of the lightning arrester can be seen. In recent years, the power grid construction is continuously advancing towards the strategic target of the global energy internet, and the power grid often passes through deserts, mountainous regions and rivers, so that the service working condition of the lightning arrester becomes more complex. Therefore, the method is particularly important for evaluating the service performance of the lightning arrester in an extremely complex environment.
At present, relevant researches on the lightning arrester at home and abroad are mostly based on simulation or power failure tests, the test or simulation environment cannot completely reflect the actual working conditions of a field, and particularly, the lightning arrester is in service in an extremely complex environment with high pollution degree, heavy air moisture content, high temperature and other factors, and the test results of the lightning arrester may have great difference. Therefore, the invention builds a platform for testing the service performance of the lightning arrester in the extreme complex environment, and provides a method for evaluating the service performance of the lightning arrester in the extreme complex environment based on the platform, so that the service performance of the lightning arrester in the extreme complex environment can be more accurately evaluated, maintenance and replacement suggestions are provided, and the lightning protection performance of the lightning arrester is further improved.
Disclosure of Invention
The invention provides an arrester service performance evaluation method under an extreme complex environment, in order to evaluate the arrester service performance under the extreme complex environment more accurately in an analytic manner. The technical scheme for realizing the purpose of the invention is as follows:
the first step is as follows: build arrester service capability test platform under extreme complex environment, this platform includes: the device comprises a comprehensive grounding device, a test box, a power frequency power supply module, an air water content analysis control device, an upper computer, a data acquisition device, a temperature analyzer, a pollution concentration analysis control device, a pollution control switch, a pollution test article, a pollution input conduit, a pollution output conduit and a temperature control bus;
the power frequency power supply module comprises a power frequency power supply, a rectifier, an inverter and a transformer which are connected in sequence;
the test box comprises a lightning arrester, a high-precision current parameter tester, an air water content regulator, a switch, a high-voltage-resistant cable, a first air water content sensor, a second air water content sensor, a third air water content sensor, a fourth air water content sensor, a temperature sensor, a dirt spraying generation device, a dirt concentration tester, a dehumidifying exhaust fan and a temperature control device;
the current input terminal IB of the high-precision current parameter tester is connected with the bottom of the lightning arrester, the grounding terminal E of the high-precision current parameter tester is connected with the comprehensive grounding device, the signal output terminal O of the high-precision current parameter tester is electrically connected with the data acquisition unit, and the data acquisition unit is electrically connected with the upper computer;
the air water content regulator, the air water content sensor I, the air water content sensor II, the air water content sensor III, the air water content sensor IV, the high-precision current parameter tester, the lightning arrester, the switch, the high-voltage-resistant cable, the temperature sensor, the sewage spraying generation device, the sewage concentration tester, the dehumidifying exhaust fan and the temperature control device are all fixed inside the test box;
furthermore, the air water content sensor I, the air water content sensor II, the air water content sensor III, the air water content sensor IV and the air water content regulator are electrically connected with the air water content analysis control device, and the air water content analysis control device is electrically connected with an upper computer;
furthermore, the temperature sensor and the temperature control bus are electrically connected with a temperature analyzer, and the temperature analyzer is electrically connected with an upper computer;
further, the temperature analyzer is connected with a temperature control device through a temperature control bus;
furthermore, the pollution control switch, the pollution concentration tester and the dehumidification exhaust fan are electrically connected with the pollution concentration analysis control device, and the pollution concentration analysis control device is electrically connected with the upper computer;
furthermore, the upper end of the pollution control switch is connected with a pollution spraying generation device through a pollution output conduit, and the lower end of the pollution control switch is connected with a pollution test article through a pollution input conduit;
furthermore, the output end of the power frequency power supply module is electrically connected to the input end of the switch through a high-voltage-resistant cable, and the output end of the switch is connected to the top input end of the lightning arrester;
the second step is that: based on the built test platform, the current parameter signal test of the lightning arrester under the extreme complex environment is carried out:
s1: setting the temperature of the test chamber to be T on the upper computeri0The upper computer sends a temperature setting signal to the temperature analyzer, and the temperature analyzer controls the temperature control device through the temperature control bus so as to adjust the temperature in the test box; the temperature sensor, the temperature sensor measures the temperature in the test chamber and transmits the result to the temperature analyzer, and the temperature analyzer calculates the average value T of the two temperature measurement valuesiIf T isiAnd Ti0Is less than T0Then T will beiThe temperature is transmitted back to the upper computer, otherwise, the temperature analyzer continuously controls the temperature control device to adjust the temperature in the test box;
s2: setting the pollution concentration of the test box to be P on the upper computeri0The upper computer sends out a pollution concentration setting signal to the pollution concentration analysis control device to analyze and control the pollution concentrationThe device turns on a pollution control switch, a pollution test article flows to a pollution spraying generating device through a pollution input conduit, the pollution control switch and a pollution output conduit, and the pollution spraying generating device sprays the pollution test article to the inside of the test box so as to adjust the pollution concentration in the test box; every t of the filth concentration tester0Second measurement of the concentration of the dirt P in the test chamberiAnd transmitting the result to a pollution concentration analysis control device, if P isiAnd Pi0Is less than P0Then P will beiThe signal is transmitted back to the upper computer, and meanwhile, a pollution control switch is turned off;
s3: setting the water vapor content in the test box to be H on the upper computeri0The upper computer sends the steam content to air water content analysis and control device and sets for the signal, air water content analysis and control device control air water content regulator sets for the steam content in the proof box, air water content sensor one, air water content sensor two, air water content sensor three, the steam content condition in the four measurement test boxes of air water content sensor returns the measuring result to air water content analysis and control device, air water content analysis and control device calculates the average value H of four steam content measured valuesiIf H isiAnd Hi0Is less than H0Then H will beiThe water content is transmitted back to the upper computer, otherwise, the air water content analysis control device continuously controls the air water content regulator to regulate the water vapor content in the test box;
the S1, S2 and S3 are carried out simultaneously;
s4: opening power frequency power supply, closing switch high-precision current parameter tester at the same time, measuring current parameter signal I generated by lightning arrester under power frequency power supply actionleakAnd transmitted to an upper computer through a data acquisition unit;
the third step: calculating the service performance evaluation coefficient alpha of the lightning arrester in the extreme complex environment:
s5: calculating a filth distortion impact factor Pt：
In the formula (1), PiThe concentration of the pollutants in the test chamber is U, and the working voltage of the lightning arrester is U;
s6: calculating the temperature deviation coefficient Tt：
In the formula (2), TiTo test the temperature in the chamber, IleakThe current parameter signal is an actually measured lightning arrester current parameter signal;
s7: calculating the Water vapor content Performance factor Ht：
In the formula (3), HiThe water vapor content in the test chamber;
s8: calculating the service performance evaluation coefficient alpha of the lightning arrester in the extreme complex environment:
w in the formula (4)1、w2、w3Is a weight factor and satisfies w1+w2+w3＝1；
The fourth step: performing service performance evaluation of the lightning arrester:
when alpha belongs to [0.9, 1.1], the service performance of the lightning arrester is represented to be good; when alpha belongs to (0.7, 0.9) U (1.1,1.2), the lightning arrester has poor service performance and needs to be overhauled in a power failure mode; when alpha belongs to [1.2, + ∞ ] U (- ∞, 0.7], the characterization lightning arrester has poor service performance and needs to be replaced in power failure;
the fifth step: changing the pollution concentration P of the set test box (4) on the upper computer (7)i0Water vapor content Hi0Temperature Ti0And (4) repeating the second step to the fourth step to evaluate the service performance of the lightning arrester under various extreme complex environments.
The invention has the beneficial effects that:
1) the testing platform for the service performance of the lightning arrester under the extreme complex environment is built, and the platform can effectively simulate the extreme complex working condition of the lightning arrester during service;
2) the intelligent operation and control can be completed through the upper computer, and the data acquisition is convenient and efficient;
3) the lightning arrester can be used in an extremely severe environment for a long time, service performance evaluation can be carried out, replacement and maintenance suggestions are provided, and lightning protection performance is further improved.
Drawings
In order to more clearly explain the technical solution of the application, the drawings needed to be used in the embodiments are briefly described below, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic view of a lightning arrester service performance test platform in an extremely complex environment shown in the present application;
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. A specific implementation mode of the method for evaluating the service performance of the lightning arrester in the extreme complex environment comprises the following steps:
the first step is as follows: build arrester service capability test platform under extreme complex environment, this platform includes: the device comprises a comprehensive grounding device (3), a test box (4), a power frequency power supply module (10), an air water content analysis control device (5), an upper computer (7), a data acquisition unit (9), a temperature analyzer (110), a pollution concentration analysis control device (17), a pollution control switch (171), a pollution test article (172), a pollution input conduit (1731), a pollution output conduit (1732) and a temperature control bus (18);
the power frequency power supply module (10) comprises a power frequency power supply (101), a rectifier (102), an inverter (103) and a transformer (104) which are connected in sequence;
the test box (4) comprises a lightning arrester (1), a high-precision current parameter tester (2), an air water content regulator (6), a switch (11), a high-voltage-resistant cable (12), a first air water content sensor (13), a second air water content sensor (14), a third air water content sensor (15), a fourth air water content sensor (16), a temperature sensor (111), a temperature sensor (112), a dirt spraying generation device (174), a dirt concentration tester (175), a dehumidifying exhaust fan (176) and a temperature control device (181);
the current input terminal IB of the high-precision current parameter tester (2) is connected with the bottom of the lightning arrester (1), the grounding terminal E of the high-precision current parameter tester (2) is connected with the comprehensive grounding device (3), the signal output terminal O of the high-precision current parameter tester (2) is electrically connected with the data collector (9), and the data collector (9) is electrically connected with the upper computer (7);
the air water content regulator (6), the first air water content sensor (13), the second air water content sensor (14), the third air water content sensor (15), the fourth air water content sensor (16), the high-precision current parameter tester (2), the lightning arrester (1), the switch (11), the high-voltage-resistant cable (12), the temperature sensor (111), the temperature sensor (112), the pollutant spraying generation device (174), the pollutant concentration tester (175), the dehumidifying exhaust fan (176) and the temperature control device (181) are all fixed inside the test box (4);
furthermore, the first air water content sensor (13), the second air water content sensor (14), the third air water content sensor (15), the fourth air water content sensor (16) and the air water content regulator (6) are electrically connected with the air water content analysis control device (5), and the air water content analysis control device (5) is electrically connected with the upper computer (7);
furthermore, the temperature sensor (111), the temperature sensor (112) and the temperature control bus (18) are all electrically connected with a temperature analyzer (110), and the temperature analyzer (110) is electrically connected with the upper computer (7);
further, the temperature analyzer (110) is connected with a temperature control device (181) through a temperature control bus (18);
furthermore, the pollution control switch (171), the pollution concentration tester (175) and the dehumidifying exhaust fan (176) are electrically connected with a pollution concentration analysis control device (17), and the pollution concentration analysis control device (17) is electrically connected with the upper computer (7);
furthermore, the upper end of the pollution control switch (171) is connected with the pollution spraying generation device (174) through a pollution output conduit (1732), and the lower end is connected with the pollution test article (172) through a pollution input conduit (1731);
further, the output end of the power frequency power supply module (10) is electrically connected to the input end of the switch (11) through a high-voltage-resistant cable (12), and the output end of the switch (11) is connected to the top input end of the lightning arrester (1);
the second step is that: based on the built test platform, the current parameter signal test of the lightning arrester under the extreme complex environment is carried out:
s1: the temperature of the test box (4) is set to be T on the upper computer (7)i0The upper computer (7) sends a temperature setting signal to the temperature analyzer (110), and the temperature analyzer (110) controls the temperature control device (181) through the temperature control bus (18) so as to adjust the temperature in the test box (4); the temperature sensor (111) and the temperature sensor (112) measure the temperature in the test chamber (4) and transmit the result to the temperature analyzer (110), and the temperature analyzer (110) calculates the average value T of the two temperature measurement valuesiIf T isiAnd Ti0Is less than T0Then T will beiThe temperature is transmitted back to the upper computer (7), otherwise, the temperature analyzer (110) continues to control the temperature control device (181) to adjust the temperature in the test box (4);
s2: the upper computer (7) sets the pollution concentration of the test box (4) to be Pi0The upper computer (7) sends a pollution concentration setting signal to the pollution concentration analysis control device (17), the pollution concentration analysis control device (17) opens the pollution control switch (171), a pollution test product (172) flows to the pollution spraying generation device (174) through a pollution input conduit (1731), the pollution control switch (171) and a pollution output conduit (1732), and the pollution spraying generation device (174) sprays the pollution test product (172) to the inside of the test box (4) so as to adjust the pollution concentration in the test box (4); the filth concentration tester (175) is arranged at intervals of t0The concentration P of the dirt in the test box (4) is measured once in a secondiAnd the result is transmitted to a pollution concentration analysis control device (17), if P isiAnd Pi0Is less than P0Then P will beiIs transmitted back to the upper computer (7) and simultaneously the pollution control switch is closedA gate (171);
s3: setting the water vapor content in the test box (4) to be H on the upper computer (7)i0Upper computer (7) send moisture content to air water content analysis controlling means (5) and set for the signal, air water content analysis controlling means (5) control air water content regulator (6) set for the moisture content in proof box (4), air water content sensor (13), air water content sensor two (14), air water content sensor three (15), the moisture content condition in air water content sensor four (16) measurement proof box (4) and return measuring result to air water content analysis controlling means (5), air water content analysis controlling means (5) calculate four moisture content measured value's average value HiIf H isiAnd Hi0Is less than H0Then H will beiThe water content is transmitted back to the upper computer (7), otherwise, the air water content analysis control device (5) continuously controls the air water content regulator (6) to regulate the water vapor content in the test box (4);
the S1, S2 and S3 are carried out simultaneously;
the concentration of the filth Pi0It may be taken as 100g/L, water vapor content Hi0Preferably 40%, temperature Ti0Can be 40 degrees;
the T is0、P0、H0Can be 0.1, 0.3 respectively;
s4: the power frequency power supply (101) is opened, and the switch (11) is closed at the same time, the high-precision current parameter tester (2) measures the current parameter signal I generated by the lightning arrester (1) under the action of the power frequency power supply (101)leakAnd is transmitted to an upper computer (7) through a data acquisition unit (9);
the third step: calculating the service performance evaluation coefficient alpha of the lightning arrester in the extreme complex environment:
s5: calculating a filth distortion impact factor Pt：
In the formula (5), PiThe concentration of the pollutants in the test box (4) is U, and the working voltage of the lightning arrester is U;
s6: calculating the temperature deviation coefficient Tt：
In the formula (6), TiIs the temperature in the test chamber (4), IleakThe current parameter signal is an actually measured lightning arrester current parameter signal;
s7: calculating the Water vapor content Performance factor Ht：
In the formula (7), HiThe water vapor content in the test chamber (4);
s8: calculating the service performance evaluation coefficient alpha of the lightning arrester in the extreme complex environment:
w in formula (8)1、w2、w3Is a weight factor and satisfies w1+w2+w3＝1；
Said w1、w2、w3Can be 0.33, 0.34 respectively;
the fourth step: performing service performance evaluation of the lightning arrester:
when alpha belongs to [0.9, 1.1], the service performance of the lightning arrester is represented to be good; when alpha belongs to (0.7, 0.9) U (1.1,1.2), the lightning arrester has poor service performance and needs to be overhauled in a power failure mode; when alpha belongs to [1.2, + ∞ ] U (- ∞, 0.7], the characterization lightning arrester has poor service performance and needs to be replaced in power failure;
the fifth step: changing the pollution concentration P of the set test box (4) on the upper computer (7)i0Water vapor content Hi0Temperature Ti0And (4) repeating the second step to the fourth step to evaluate the service performance of the lightning arrester under various extreme complex environments.
Claims (1)
1. The method for evaluating the service performance of the lightning arrester under the extreme complex environment is characterized by firstly establishing a platform for testing the service performance of the lightning arrester under the extreme complex environment, wherein the platform comprises the following components: the device comprises a comprehensive grounding device (3), a test box (4), a power frequency power supply module (10), an air water content analysis control device (5), an upper computer (7), a data acquisition unit (9), a temperature analyzer (110), a pollution concentration analysis control device (17), a pollution control switch (171), a pollution test article (172), a pollution input conduit (1731), a pollution output conduit (1732) and a temperature control bus (18);
the power frequency power supply module (10) comprises a power frequency power supply (101), a rectifier (102), an inverter (103) and a transformer (104) which are connected in sequence;
the test box (4) comprises a lightning arrester (1), a high-precision current parameter tester (2), an air water content regulator (6), a switch (11), a high-voltage-resistant cable (12), a first air water content sensor (13), a second air water content sensor (14), a third air water content sensor (15), a fourth air water content sensor (16), a temperature sensor (111), a temperature sensor (112), a dirt spraying generation device (174), a dirt concentration tester (175), a dehumidifying exhaust fan (176) and a temperature control device (181);
the current input terminal IB of the high-precision current parameter tester (2) is connected with the bottom of the lightning arrester (1), the grounding terminal E of the high-precision current parameter tester (2) is connected with the comprehensive grounding device (3), the signal output terminal O of the high-precision current parameter tester (2) is electrically connected with the data collector (9), and the data collector (9) is electrically connected with the upper computer (7);
the air water content regulator (6), the first air water content sensor (13), the second air water content sensor (14), the third air water content sensor (15), the fourth air water content sensor (16), the high-precision current parameter tester (2), the lightning arrester (1), the switch (11), the high-voltage-resistant cable (12), the temperature sensor (111), the temperature sensor (112), the pollutant spraying generation device (174), the pollutant concentration tester (175), the dehumidifying exhaust fan (176) and the temperature control device (181) are all fixed inside the test box (4);
furthermore, the first air water content sensor (13), the second air water content sensor (14), the third air water content sensor (15), the fourth air water content sensor (16) and the air water content regulator (6) are electrically connected with the air water content analysis control device (5), and the air water content analysis control device (5) is electrically connected with the upper computer (7);
furthermore, the temperature sensor (111), the temperature sensor (112) and the temperature control bus (18) are all electrically connected with a temperature analyzer (110), and the temperature analyzer (110) is electrically connected with the upper computer (7);
further, the temperature analyzer (110) is connected with a temperature control device (181) through a temperature control bus (18);
furthermore, the pollution control switch (171), the pollution concentration tester (175) and the dehumidifying exhaust fan (176) are electrically connected with a pollution concentration analysis control device (17), and the pollution concentration analysis control device (17) is electrically connected with the upper computer (7);
furthermore, the upper end of the pollution control switch (171) is connected with the pollution spraying generation device (174) through a pollution output conduit (1732), and the lower end is connected with the pollution test article (172) through a pollution input conduit (1731);
further, the output end of the power frequency power supply module (10) is electrically connected to the input end of the switch (11) through a high-voltage-resistant cable (12), and the output end of the switch (11) is connected to the top input end of the lightning arrester (1);
the method comprises the following steps:
the first step is as follows: based on the built test platform, the current parameter signal test of the lightning arrester under the extreme complex environment is carried out:
s1: the temperature of the test box (4) is set to be T on the upper computer (7)i0The upper computer (7) sends a temperature setting signal to the temperature analyzer (110), and the temperature analyzer (110) controls the temperature control device (181) through the temperature control bus (18) so as to adjust the temperature in the test box (4); the temperature sensor (111) and the temperature sensor (112) measure the temperature in the test chamber (4) and transmit the result to the temperature analyzer (110), and the temperature analyzer (110) calculates the average value T of the two temperature measurement valuesiIf T isiAnd Ti0Is less than T0Then T will beiTransmit backThe upper computer (7) is connected, otherwise, the temperature analyzer (110) continues to control the temperature control device (181) to adjust the temperature in the test box (4);
s2: the upper computer (7) sets the pollution concentration of the test box (4) to be Pi0The upper computer (7) sends a pollution concentration setting signal to the pollution concentration analysis control device (17), the pollution concentration analysis control device (17) opens the pollution control switch (171), a pollution test product (172) flows to the pollution spraying generation device (174) through a pollution input conduit (1731), the pollution control switch (171) and a pollution output conduit (1732), and the pollution spraying generation device (174) sprays the pollution test product (172) to the inside of the test box (4) so as to adjust the pollution concentration in the test box (4); the filth concentration tester (175) is arranged at intervals of t0The concentration P of the dirt in the test box (4) is measured once in a secondiAnd the result is transmitted to a pollution concentration analysis control device (17), if P isiAnd Pi0Is less than P0Then P will beiThe signal is transmitted back to the upper computer (7), and a pollution control switch (171) is closed at the same time;
s3: setting the water vapor content in the test box (4) to be H on the upper computer (7)i0Upper computer (7) send moisture content to air water content analysis controlling means (5) and set for the signal, air water content analysis controlling means (5) control air water content regulator (6) set for the moisture content in proof box (4), air water content sensor (13), air water content sensor two (14), air water content sensor three (15), the moisture content condition in air water content sensor four (16) measurement proof box (4) and return measuring result to air water content analysis controlling means (5), air water content analysis controlling means (5) calculate four moisture content measured value's average value HiIf H isiAnd Hi0Is less than H0Then H will beiThe water content is transmitted back to the upper computer (7), otherwise, the air water content analysis control device (5) continuously controls the air water content regulator (6) to regulate the water vapor content in the test box (4);
the S1, S2 and S3 are carried out simultaneously;
s4: the power frequency power supply (101) is opened, and the switch (11) is closed at the same time, the high-precision current parameter tester (2) measures the current parameter generated by the lightning arrester (1) under the use of the power frequency power supply (101)Quantity signal IleakAnd is transmitted to an upper computer (7) through a data acquisition unit (9);
the second step is that: calculating the service performance evaluation coefficient alpha of the lightning arrester in the extreme complex environment:
s5: calculating a filth distortion impact factor Pt：
In the formula (1), PiThe concentration of the pollutants in the test box (4) is U, and the working voltage of the lightning arrester is U;
s6: calculating the temperature deviation coefficient Tt：
In the formula (2), TiIs the temperature in the test chamber (4), IleakThe current parameter signal is an actually measured lightning arrester current parameter signal;
s7: calculating the Water vapor content Performance factor Ht：
In the formula (3), HiThe water vapor content in the test chamber (4);
s8: calculating the service performance evaluation coefficient alpha of the lightning arrester in the extreme complex environment:
w in the formula (4)1、w2、w3Is a weight factor and satisfies w1+w2+w3＝1；
The third step: performing service performance evaluation of the lightning arrester:
when alpha belongs to [0.9, 1.1], the service performance of the lightning arrester is represented to be good; when alpha belongs to (0.7, 0.9) U (1.1,1.2), the lightning arrester has poor service performance and needs to be overhauled in a power failure mode; when alpha belongs to [1.2, + ∞ ] U (- ∞, 0.7], the characterization lightning arrester has poor service performance and needs to be replaced in power failure;
the fourth step: changing the pollution concentration P of the set test box (4) on the upper computer (7)i0Water vapor content Hi0Temperature Ti0And (4) repeating the second step to the fourth step to evaluate the service performance of the lightning arrester under various extreme complex environments.
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| DE102010038208A1 (en) * | 2010-10-14 | 2012-04-19 | Phoenix Contact Gmbh & Co. Kg | Overvoltage protection device has overvoltage arrester and positive temperature coefficient thermistor or negative temperature coefficient thermistor for detecting temperature of overvoltage arrester |
| CN102879665B (en) * | 2012-08-28 | 2016-01-20 | 中国电力科学研究院 | A kind of direct current arrester pollution test method |
| CN103207336B (en) * | 2013-03-22 | 2015-02-04 | 中国电力科学研究院 | Lightning arrester operation analog simulation system |
| CN203502513U (en) * | 2013-09-23 | 2014-03-26 | 国家电网公司 | Power transmission and transformation system equipment state simulation apparatus |
| CN207730849U (en) * | 2017-11-22 | 2018-08-14 | 国网江西省电力有限公司电力科学研究院 | A kind of arrester artificial pollution test's device based on oscillograph |
| CN110988638A (en) * | 2019-12-02 | 2020-04-10 | 广东电网有限责任公司 | Arrester insulating properties test device |
| CN111190084B (en) * | 2020-02-13 | 2022-08-16 | 云南电网有限责任公司曲靖供电局 | Pollution test method for lightning arrester |
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2021
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