CN114441885A - Lightning arrester aging state assessment method considering wind speed and illumination factors - Google Patents
Lightning arrester aging state assessment method considering wind speed and illumination factors Download PDFInfo
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- 238000005286 illumination Methods 0.000 title claims abstract description 76
- 230000032683 aging Effects 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 15
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 98
- 238000012360 testing method Methods 0.000 claims abstract description 64
- 239000011787 zinc oxide Substances 0.000 claims abstract description 49
- 238000011156 evaluation Methods 0.000 claims abstract description 18
- 238000012545 processing Methods 0.000 claims description 30
- 239000002245 particle Substances 0.000 claims description 15
- 238000004088 simulation Methods 0.000 claims description 9
- 238000005457 optimization Methods 0.000 claims description 6
- 238000002474 experimental method Methods 0.000 claims description 3
- DLINORNFHVEIFE-UHFFFAOYSA-N hydrogen peroxide;zinc Chemical compound [Zn].OO DLINORNFHVEIFE-UHFFFAOYSA-N 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 229940105296 zinc peroxide Drugs 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
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- 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
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Abstract
The lightning arrester aging state assessment method considering the wind speed and the illumination factors is characterized by firstly establishing a lightning arrester aging state assessment test platform considering the wind speed and the illumination factors, wherein the assessment steps are as follows: the lightning arrester is placed in a test box, the environment where the lightning arrester actually operates is simulated by changing the wind speed and the illumination intensity in the test box and applying working condition voltage, then the current values of the zinc oxide lightning arrester at different wind speeds and illumination intensities are measured, a current reference value calculation formula suitable for different wind speeds and illumination factors is obtained and optimized, the lightning arrester aging state evaluation factor is calculated according to the current reference value, and finally the aging performance of the lightning arrester is evaluated. The lightning arrester aging performance evaluation method has the advantages that the lightning arrester aging performance evaluation method considering wind speed and illumination factors is provided, the test platform is set up, the wind speed and illumination intensity which accord with the reality are selected for analysis, judgment can be completed by calculating the aging state evaluation reference value of the lightning arrester, and help is provided for normal operation of a line.
Description
Technical Field
The invention belongs to the technical field of performance evaluation of zinc oxide arresters in power systems, and particularly relates to an arrester aging state evaluation method considering wind speed and illumination factors.
Background
The zinc oxide arrester is an important component of an overvoltage protection facility of a power system, and is widely applied to power transmission lines and transformer substations. The lightning arrester has excellent nonlinear volt-ampere characteristics, can limit the voltage amplitude of flowing through cables or equipment, protects the equipment from insulation, and the safe and stable operation of the whole power system is closely related to the performance of the lightning arrester. Because transmission line and transformer substation often are in the region that the people's cigarette is rare, the environment is comparatively abominable, thereby the arrester is difficult to avoid can be influenced by wind and the influence such as sunshine and ageing influence its performance, because the arrester is at the importance of electric power system protection, the performance degradation of arrester is exactly the threat to electric power system safe operation in essence. Therefore, the method for evaluating the aging state of the lightning arrester by considering the wind speed and the illumination factors has important significance.
At present, research on an arrester aging state evaluation method considering wind speed and illumination factors is lacked. According to the invention, by means of the lightning arrester aging characteristic evaluation platform, the current reference value of the zinc oxide lightning arrester is considered, the characteristic evaluation factor of the zinc oxide lightning arrester is calculated, and a certain reference is provided for the performance evaluation of the zinc oxide lightning arrester.
Disclosure of Invention
The invention aims to provide a lightning arrester aging state assessment method considering wind speed and illumination factors.
The technical scheme for realizing the purpose of the invention is as follows:
an arrester aging state assessment test platform taking wind speed and illumination factors into account, the platform comprising:
the device comprises a test box, a zinc oxide arrester test article, a working voltage generating device, a working voltage control console, a coaxial cable, a switch, a current taking device, a current sensor, a current data processing unit, a host, an illumination control console, an illumination data processing unit, an illumination simulation device, a wind speed control console, a wind speed data processing unit, a fan and a grounding device;
the test box comprises an illumination simulation device and a fan, the zinc oxide arrester test sample is placed in the test box, one end of the zinc oxide arrester test sample is connected with the switch, and the other end of the zinc oxide arrester test sample is connected with the grounding device through the current taking device;
the trigger port of the working voltage generating device is connected with the working voltage console, the other end of the working voltage console is connected with the host, the output end of the working voltage generating device is connected with the switch through a coaxial cable, and the grounding end of the working voltage generating device is connected with the grounding device;
the illumination simulation device is connected with the host through an illumination data processing unit and an illumination console, the fan is connected with the host through a wind speed data processing unit and a wind speed console, and the current taking device is connected with the host through a current sensor and a current data processing unit;
the experimental method of the experimental platform comprises the following steps:
s1: the working condition of the lightning arrester is simulated, and the method comprises the following specific steps: operating a working voltage control console through a host, starting a working voltage generating device, outputting working voltage to a zinc oxide arrester test product, detecting current I flowing through the zinc oxide arrester test product by a current sensor at the moment, transmitting a captured current signal to a current data processing unit, and transmitting obtained measurement data and corresponding time to the host by the current data processing unit;
s2: simulating the current passing through the zinc oxide arrester test sample under different illumination intensities, which comprises the following steps: preparing a plurality of brand-new zinc oxide lightning arrester samples of the same type, wherein the fixed wind speed condition is 0 m.s-1The illumination intensity I in the test box is controlled by operating the illumination control consoleDNFrom A1W m-2Adjusted to A2 W.m-2At intervals of Δ AW · m-2A brand-new lightning arrester sample is replaced and the current I flowing through the zinc peroxide lightning arrester sample is measurediMeanwhile, the illumination data processing unit sends the illumination intensity data and the corresponding time to the host computer, and the steps are continuously repeated to obtain the current I flowing through the lightning arrester under different illumination intensities when the wind speed is not influenced;
s3: simulating the current passing through the zinc oxide arrester test sample under different wind speed conditions, comprising the following steps: preparing several brand-new zinc oxide lightning arrester samples of the same type, and fixing the illumination intensity to 0 W.m-2The wind speed v in the test box is controlled from B1m · s by operating the wind speed control stand-1Adjusted to B2m · s-1At intervals of Δ B m ·s-1A brand new arrester sample is replaced and the current I flowing through the zinc oxide arrester sample is measurediMeanwhile, the illumination data processing unit sends the illumination intensity data and the corresponding time to the host computer, and the steps are continuously repeated to obtain the current I flowing through the lightning arrester at different wind speeds when the illumination is not influenced;
s4: n times of tests are carried out on the lightning arrester test sample to be evaluated, and different wind speeds v and different illumination conditions I are calculated through the following formulaDNCurrent reference value I of lower zinc oxide arresterB：
In the formula (1), IBIs the current reference value of the sample, v is the wind speed, IDNAnd x is an error coefficient and y is an integral variable.
S5: modeling a current reference value formula by adopting a particle swarm optimization algorithm, and calculating x for minimizing the error0The method comprises the following specific steps:
1) generating an initial population having uniformly distributed particles and velocities, setting a stopping condition;
2) calculating the optimal position of the population according to the formula (2):
wherein f (x) represents an objective function, n is the number of test sets, IBiFor the current reference value, I, calculated correspondingly for the ith testRiThe current actual value measured for the ith test;
3) updating the position and velocity of each particle;
4) calculating an objective function value of each particle position, and updating the optimal position of the whole population and the individual historical optimal position of each particle;
5) if the stopping condition is met, stopping searching and outputting a searching result; otherwise, returning to the step 3);
6) deriving an optimum x from the optimization0Substituting the following formula (3) to obtain an optimized theoretical formula for calculating the current reference value:
s6, considering the optimized current reference value IBCalculating an arrester aging state evaluation factor alpha of the wind speed and illumination factors:
s7: the lightning arrester aging state evaluation factor alpha obtained based on the steps is evaluated, when alpha belongs to (0, 0.75), the performance of the zinc oxide lightning arrester is qualified and can be normally used, when alpha belongs to (0.75, 1), the lightning arrester aging reaches a certain degree and needs attention, and when alpha belongs to (1, plus infinity), the performance of the zinc oxide lightning arrester is greatly reduced and the lightning arrester should be replaced as soon as possible.
The invention has the beneficial effects that:
(1) the method comprises the steps that an arrester aging state evaluation test platform considering wind speed and illumination factors is built, and the actual working condition of the arrester in the environments of a power transmission line, a transformer substation and the like is simulated;
(2) the aging characteristic reference value of the zinc oxide arrester can be conveniently and rapidly calculated and evaluated;
(3) the test device is simple to operate, safe and stable, easy to migrate to other fields and universal.
Drawings
FIG. 1 is a schematic diagram of the general structure of the present invention;
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. The specific implementation mode of the lightning arrester aging state assessment method considering wind speed and illumination factors comprises the following steps:
as shown in fig. 1, a lightning arrester aging state evaluation test platform considering wind speed and illumination factors includes:
the device comprises a test box (1), a zinc oxide arrester test article (2), a working voltage generating device (3), a working voltage control console (4), a coaxial cable (5), a switch (6), a current taking device (7), a current sensor (8), a current data processing unit (9), a host (10), an illumination control console (11), an illumination data processing unit (12), an illumination simulation device (13), a wind speed control console (14), a wind speed data processing unit (15), a fan (16) and a grounding device (17);
the test box (1) comprises an illumination simulation device (13) and a fan (16), the zinc oxide arrester test sample (2) is placed in the test box (1), one end of the zinc oxide arrester test sample (2) is connected with the switch (6), and the other end of the zinc oxide arrester test sample is connected with the grounding device (17) through the current taking device (7);
the trigger port of the working voltage generating device (3) is connected with the working voltage console (4), the other end of the working voltage console (4) is connected with the host (10), the output end of the working voltage generating device (3) is connected with the switch (6) through the coaxial cable (5), and the grounding end of the working voltage generating device (3) is connected with the grounding device (17);
the illumination simulation device (13) is connected with the host (10) through an illumination data processing unit (12) and an illumination console (11), the fan (16) is connected with the host (10) through a wind speed data processing unit (15) and a wind speed control console (14), and the current taking device (7) is connected with the host (10) through a current sensor (8) and a current data processing unit (9);
the experimental method of the experimental platform comprises the following steps:
s1: the working condition of the lightning arrester is simulated, and the method comprises the following specific steps: operating a working voltage control console (4) through a host (10), starting a working voltage generating device (3), and outputting working voltage to a zinc oxide arrester test article (2), wherein a current sensor (8) can detect current I flowing through the zinc oxide arrester test article (2) and transmit a captured current signal to a current data processing unit (9), and the current data processing unit (9) can send obtained measurement data and corresponding time to the host (10);
s2: test article for simulating passing through zinc oxide arrester under different illumination intensities(2) The method comprises the following specific steps: preparing a plurality of brand-new zinc oxide arrester samples (2) with the same type, wherein the fixed wind speed condition is 0 m.s-1The illumination intensity I in the test chamber (1) is adjusted by operating the illumination console (11)DNFrom A1W m-2Adjusted to A2 W.m-2At intervals of Δ AW · m-2A brand-new lightning arrester sample is replaced and the current I flowing through the zinc peroxide lightning arrester sample (2) is measurediMeanwhile, the illumination data processing unit (12) sends the illumination intensity data and the corresponding time to the host (10), and the steps are continuously repeated to obtain the current I flowing through the lightning arrester under different illumination intensities when the wind speed is not influenced;
the A1 is taken as: 0, A2 is taken as: 400, respectively;
s3: simulating the current passing through the zinc oxide arrester test article (2) under different wind speed conditions, comprising the following steps: preparing a plurality of brand-new zinc oxide arrester samples (2) with the same type, and the fixed illumination intensity of 0 W.m-2The wind speed v in the test chamber (1) is controlled from B1 m.s by operating the wind speed control table (14)-1Adjusted to B2m · s-1At intervals of Δ B m · s-1A brand-new arrester sample is replaced and the current I flowing through the zinc oxide arrester sample (2) is measurediMeanwhile, the illumination data processing unit (12) sends the illumination intensity data and the corresponding time to the host (10), and the steps are continuously repeated to obtain the current I flowing through the lightning arrester at different wind speeds when the illumination is not influenced;
the B1 is taken as: 0, B2 is taken as: 9;
s4: n times of tests are carried out on the lightning arrester test sample to be evaluated, and different wind speeds v and different illumination conditions I are calculated through the following formulaDNCurrent reference value I of lower zinc oxide arresterB：
In the formula (1), IBIs the current reference value of the sample, v is the wind speed, IDNAnd x is an error coefficient and y is an integral variable.
S5: modeling a current reference value formula by adopting a particle swarm optimization algorithm, and calculating x for minimizing the error0The method comprises the following specific steps:
1) generating an initial population having uniformly distributed particles and velocities, setting a stopping condition;
2) calculating the optimal position of the population according to the formula (2):
wherein f (x) represents an objective function, n is the number of test sets, IBiFor the current reference value, I, calculated correspondingly for the ith testRiMeasuring the actual current value for the ith test;
3) updating the position and velocity of each particle;
4) calculating an objective function value of each particle position, and updating the optimal position of the whole population and the individual historical optimal position of each particle;
5) if the stopping condition is met, stopping searching and outputting a searching result; otherwise, returning to the step 3);
6) obtaining an optimum value x from the optimization0Substituting the following formula (3) to obtain an optimized theoretical formula for calculating the current reference value:
s6, considering the optimized current reference value IBCalculating an aging state evaluation factor alpha of the lightning arrester based on wind speed and illumination factors:
s7: the lightning arrester aging state evaluation factor alpha obtained based on the steps is evaluated, when alpha belongs to (0, 0.75), the performance of the zinc oxide lightning arrester is qualified and can be normally used, when alpha belongs to (0.75, 1), the lightning arrester aging reaches a certain degree and needs attention, and when alpha belongs to (1, plus infinity), the performance of the zinc oxide lightning arrester is greatly reduced and the lightning arrester should be replaced as soon as possible.
Claims (1)
1. The utility model provides an take into account arrester aging state aassessment method of wind speed and illumination factor which characterized in that has at first set up an arrester aging state aassessment test platform of taking into account wind speed and illumination factor, and the platform includes: the device comprises a test box (1), a zinc oxide arrester test article (2), a working voltage generating device (3), a working voltage control console (4), a coaxial cable (5), a switch (6), a current taking device (7), a current sensor (8), a current data processing unit (9), a host (10), an illumination control console (11), an illumination data processing unit (12), an illumination simulation device (13), a wind speed control console (14), a wind speed data processing unit (15), a fan (16) and a grounding device (17);
the test box (1) comprises an illumination simulation device (13) and a fan (16), the zinc oxide arrester test article (2) is placed in the test box (1), one end of the zinc oxide arrester test article (2) is connected with the switch (6), and the other end of the zinc oxide arrester test article is connected with the grounding device (17) through the current taking device (7);
the trigger port of the working voltage generating device (3) is connected with the working voltage console (4), the other end of the working voltage console (4) is connected with the host (10), the output end of the working voltage generating device (3) is connected with the switch (6) through the coaxial cable (5), and the grounding end of the working voltage generating device (3) is connected with the grounding device (17);
the illumination simulation device (13) is connected with the host (10) through an illumination data processing unit (12) and an illumination console (11), the fan (16) is connected with the host (10) through a wind speed data processing unit (15) and a wind speed control console (14), and the current taking device (7) is connected with the host (10) through a current sensor (8) and a current data processing unit (9);
the experimental method of the experimental platform comprises the following steps:
s1: the working condition of the lightning arrester is simulated, and the method comprises the following specific steps: operating a working voltage control console (4) through a host (10), starting a working voltage generating device (3), and outputting working voltage to a zinc oxide arrester test article (2), wherein a current sensor (8) can detect current I flowing through the zinc oxide arrester test article (2) and transmit a captured current signal to a current data processing unit (9), and the current data processing unit (9) can send obtained measurement data and corresponding time to the host (10);
s2: simulating the current passing through the zinc oxide arrester test article (2) under different illumination intensities, which comprises the following steps: preparing a plurality of brand-new zinc oxide arrester test articles (2) with the same type, wherein the fixed wind speed condition is 0 m.s-1The illumination intensity I in the test chamber (1) is adjusted by operating the illumination console (11)DNFrom A1W m-2Adjusted to A2W m-2At intervals of Δ AW · m-2A brand-new lightning arrester sample is replaced and the current I flowing through the zinc peroxide lightning arrester sample (2) is measurediMeanwhile, the illumination data processing unit (12) sends the illumination intensity data and the corresponding time to the host (10), and the steps are continuously repeated to obtain the current I flowing through the lightning arrester under different illumination intensities when the wind speed is not influenced;
s3: simulating the current passing through the zinc oxide arrester test article (2) under different wind speed conditions, comprising the following steps: preparing a plurality of brand-new zinc oxide arrester samples (2) with the same type, and the fixed illumination intensity of 0 W.m-2The wind speed v in the test chamber (1) is controlled from B1m & s by operating the wind speed control table (14)-1Adjusted to B2m · s-1At intervals of Δ B m · s-1A brand-new arrester sample is replaced and the current I flowing through the zinc oxide arrester sample (2) is measurediMeanwhile, the illumination data processing unit (12) sends the illumination intensity data and the corresponding time to the host (10), and the steps are continuously repeated to obtain the current I flowing through the lightning arrester at different wind speeds when the illumination is not influenced;
s4: n times of tests are carried out on the lightning arrester test sample to be evaluated, and different wind speeds v and different illumination conditions I are calculated through the following formulaDNCurrent reference value I of lower zinc oxide arresterB：
In the formula (1), IBIs the current reference value of the sample, v is the wind speed, IDNAnd x is an error coefficient and y is an integral variable.
S5: modeling a current reference value formula by adopting a particle swarm optimization algorithm, and calculating x for minimizing the error0The method comprises the following specific steps:
1) generating an initial population having uniformly distributed particles and velocities, setting a stopping condition;
2) calculating the optimal position of the population according to the formula (2):
wherein f (x) represents an objective function, n is the number of test sets, IBiFor the current reference value, I, calculated correspondingly for the ith testRiMeasuring the actual current value for the ith test;
3) updating the position and velocity of each particle;
4) calculating an objective function value of each particle position, and updating the optimal position of the whole population and the individual historical optimal position of each particle;
5) if the stopping condition is met, stopping searching and outputting a searching result; otherwise, returning to the step 3);
6) deriving an optimum x from the optimization0Substituting the following formula (3) to obtain an optimized theoretical formula for calculating the current reference value:
s6, considering the optimized current reference value IBCalculating an aging state evaluation factor alpha of the lightning arrester based on wind speed and illumination factors:
s7: the lightning arrester aging state evaluation factor alpha obtained based on the steps is evaluated, when alpha belongs to (0, 0.75), the performance of the zinc oxide lightning arrester is qualified and can be normally used, when alpha belongs to (0.75, 1), the lightning arrester aging reaches a certain degree and needs attention, and when alpha belongs to (1, plus infinity), the performance of the zinc oxide lightning arrester is greatly reduced and the lightning arrester should be replaced as soon as possible.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4803436A (en) * | 1987-09-16 | 1989-02-07 | General Electric Company | Method and apparatus for evaluating the condition of a gapless metal-oxide varistor lightning arrester used for protecting a distribution transformer |
| JPH049776A (en) * | 1990-04-27 | 1992-01-14 | Meidensha Corp | Device for detecting deterioration of lightning arrester |
| CN102818956A (en) * | 2012-08-16 | 2012-12-12 | 大连世有电力科技有限公司 | Lightning arrester online monitoring system with hot-spot detection |
| CN212378791U (en) * | 2020-05-12 | 2021-01-19 | 许继集团有限公司 | Monitoring device for high-voltage lightning arrester |
| CN112684274A (en) * | 2021-01-11 | 2021-04-20 | 西南交通大学 | Lightning arrester reliability state assessment method under different air water contents |
| CN112904117A (en) * | 2021-01-20 | 2021-06-04 | 云南电网有限责任公司电力科学研究院 | Lightning arrester aging test evaluation system and method considering air temperature and multiple lightning strikes |
-
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- 2022-01-14 CN CN202210042054.9A patent/CN114441885B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4803436A (en) * | 1987-09-16 | 1989-02-07 | General Electric Company | Method and apparatus for evaluating the condition of a gapless metal-oxide varistor lightning arrester used for protecting a distribution transformer |
| JPH049776A (en) * | 1990-04-27 | 1992-01-14 | Meidensha Corp | Device for detecting deterioration of lightning arrester |
| CN102818956A (en) * | 2012-08-16 | 2012-12-12 | 大连世有电力科技有限公司 | Lightning arrester online monitoring system with hot-spot detection |
| CN212378791U (en) * | 2020-05-12 | 2021-01-19 | 许继集团有限公司 | Monitoring device for high-voltage lightning arrester |
| CN112684274A (en) * | 2021-01-11 | 2021-04-20 | 西南交通大学 | Lightning arrester reliability state assessment method under different air water contents |
| CN112904117A (en) * | 2021-01-20 | 2021-06-04 | 云南电网有限责任公司电力科学研究院 | Lightning arrester aging test evaluation system and method considering air temperature and multiple lightning strikes |
Non-Patent Citations (1)
| Title |
|---|
| 史晓航 等: "《考虑风速和光照影响的特高压避雷器温度分布研究》", 《电瓷避雷器》 * |
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Effective date of registration: 20231007 Address after: Room 2202, 22 / F, Wantong building, No. 3002, Sungang East Road, Sungang street, Luohu District, Shenzhen City, Guangdong Province Patentee after: Shenzhen dragon totem technology achievement transformation Co.,Ltd. Address before: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee before: Dragon totem Technology (Hefei) Co.,Ltd. Effective date of registration: 20231007 Address after: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee after: Dragon totem Technology (Hefei) Co.,Ltd. Address before: 611756 Southwest Jiaotong University, Chengdu, Sichuan Patentee before: SOUTHWEST JIAOTONG University |