CN104698348A - Simulation test method of polluted insulators based on volume fraction of pollutants in atmosphere - Google Patents
Simulation test method of polluted insulators based on volume fraction of pollutants in atmosphere Download PDFInfo
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- CN104698348A CN104698348A CN201410294410.1A CN201410294410A CN104698348A CN 104698348 A CN104698348 A CN 104698348A CN 201410294410 A CN201410294410 A CN 201410294410A CN 104698348 A CN104698348 A CN 104698348A
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Abstract
The invention relates to the technical field of detection of high-tension power equipment, in particular to a simulation test method of polluted insulators based on a volume fraction of pollutants in the atmosphere. According to the method, a lab of artificial insulator pollution determines a volume fraction of pollutant particles in the atmosphere in the equal-pollution-level natural pollution environment according to surface pollution level of insulators, and pollutant quantity is calculated according to volume of a test box. The volume fraction of the pollutant particles in the atmosphere is used to indicate the pollution level of the insulators, the actual running environment of the insulators is better simulated, and more accurate test data are acquired. The method is suitable for popularization and application in power systems.
Description
Technical field
The present invention relates to high voltage electric power equip ment detection technique field, particularly relate to a kind of Criterion of Polluted Insulator simulation experiment method based on volume fraction filthy in air.
Background technology
At present, the simulation test of Criterion of Polluted Insulator main artificial pollution method and naturally filthy method.The former is according to the close measured value close with ash of salt of insulator in operation, by the mode of manually brushing, filth is applied to insulator surface, situation is stained in order to analog insulation, but owing to only replacing salt and grey class material with Nacl and zeyssatite in the process of simulation, be not inconsistent with actual conditions, easily cause a deviation; The latter characterizes insulator with the filth of accumulation naturally and stains situation, conform to, but the test period is long, and the method do not had is simulated insulator running environment with actual conditions.
Summary of the invention
For overcoming prior art defect, the invention provides a kind of Criterion of Polluted Insulator simulation experiment method based on volume fraction filthy in air, utilizing the volume fraction of filthy particle in air to characterize insulator soilability, can be simulated insulator actual motion environment.
For achieving the above object, the technical solution adopted in the present invention is:
A kind of Criterion of Polluted Insulator simulation experiment method based on volume fraction filthy in air, it is by the filthy laboratory of insulator artificial, grade is stained according to insulator surface, determine the volume fraction of filthy particle in the air under equal gradation for surface pollution nature filthy environment condition, by the test method of chamber volume computing filth amount;
Concrete operation step is as follows:
(1) according to the natural gradation for surface pollution evaluation method that CIGRE158 provides, search the atmospheric pollution situation of corresponding gradation for surface pollution, according to test of many times to obtain under equal gradation for surface pollution in insulator ambient atmosphere comprise the volume fraction empirical value of filthy particle;
(2) test puts into unslaked lime in first 48 ~ 72 hours in glass casing, and keeps glass casing airtight;
(3) grade is stained by insulator surface, according in insulator ambient atmosphere under the equal gradation for surface pollution obtained in the 1st step comprise the volume fraction empirical value of filthy particle, determine the volume fraction of filthy particle in air, by glass box volume computing filth amount, and be positioned over bottom chamber by after filthy particulate abrasive, simulate airborne dust by blowing device, filth is blowed floating in air;
(4) utilize steam generator that relative air humidity in chamber is promoted to 60%RH ~ 82%RH, air humidity during in order to simulate under dense fog 20 ~ 30 DEG C.Make filthy particle and water vapor remain suspended state by adjustment wind direction therebetween, and keep a period of time, test again after the solvend guaranteeing in filth fully dissolves.
The filthy laboratory of described insulator artificial is connected to form by glass casing and spraying system.
Described mist system by being arranged on the external purification plant of glass box, micro pump, high-pressure hydraulic pump, and is arranged on the atomizer composition in glass casing; The wherein connection water source, one end of purification plant, the other end of purification plant connects micro pump, and the other end of micro pump connects high-pressure hydraulic pump, and the other end of high-pressure hydraulic pump connects atomizer; First deionized water is introduced purification plant, input in high-pressure hydraulic pump through micro pump, heating atomization in high-pressure hydraulic pump, spray in the glass casing in artificial pollution laboratory finally by atomizer.
Described a kind of Criterion of Polluted Insulator simulation experiment method based on volume fraction filthy in air, concrete operation step is as follows:
(1) before the test 48 hours, unslaked lime and bamboo charcoal powder are put into glass casing and keeps it airtight; The middle water vapor of unslaked lime Absorbable rod air, the impurity suspended in bamboo charcoal powder Absorbable rod air, and take the measure that destatics to eliminate space charge intrinsic in air as far as possible;
(2) grade is stained according to insulator surface, determine the volume fraction of filthy particle in the air under equal gradation for surface pollution nature filthy environment condition, by glass box volume computing filth amount, and be positioned over bottom glass box by after filthy particulate abrasive, simulate airborne dust by blowing device, filth is blowed floating in air;
(3) recycle steam generator and relative air humidity in glass box is promoted to about 70%RH, in order to simulate air humidity during lower 20 DEG C of dense fog;
(4) therebetween, make filthy particle and water vapor remain suspended state by adjustment wind direction, and keep a period of time, test again after the solvend guaranteeing in filth fully dissolves; The choosing method of temperature and air pressure is the same; The complete need of each test clean climatic chamber inwall, guarantee that it keeps clean dry, can carry out test next time.
Advantage of the present invention and effect are:
The present invention utilizes the volume fraction of filthy particle in air to characterize insulator soilability, can be simulated insulator actual motion environment better, to obtain more accurate test figure.Be suitable in electric system promotion and application.
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
Accompanying drawing explanation
Fig. 1 is insulator artificial climate cell in the present invention;
Fig. 2 is test flow chart of the present invention.
In figure: purification plant 1, micro pump 2, high-pressure hydraulic pump 3, ultraviolet visualization window 4, atomizer 5, leakage current measurement system 6, Temperature/Humidity Control System 7.
Embodiment
The present invention is a kind of Criterion of Polluted Insulator simulation experiment method based on volume fraction filthy in air, and it utilizes the filthy laboratory of insulator artificial, stains grade according to insulator surface, determines in equal gradation for surface pollution nature filthy environment condition.
As shown in Figure 1, glass casing is connected with spraying system in insulator artificial described in the present invention filthy laboratory.Spraying system is by being arranged on the external purification plant of glass box 1, micro pump 2, high-pressure hydraulic pump 3, and the atomizer 5 be arranged in glass casing forms, the wherein connection water source, one end of purification plant 1, the other end of purification plant 1 connects micro pump 2, the other end of micro pump 2 connects high-pressure hydraulic pump 3, and the other end of high-pressure hydraulic pump 3 connects atomizer 5; First deionized water is introduced purification plant 1, input in high-pressure hydraulic pump 3 through micro pump 2, heating atomization in high-pressure hydraulic pump 3, spray in the glass casing in artificial pollution laboratory finally by atomizer 5.The pressure of mist and humidity accurately can be controlled by micro pump 2.Ambient temperature and humidity in glass casing is measured by Temperature/Humidity Control System 7 and is regulated.Ultraviolet visualization window 4 is located on casing, and ultraviolet visualization window 4 can pass through ultraviolet light, is convenient to ultraviolet imager and observes discharge process.
Leakage current measurement system 6 is external at casing, and Temperature/Humidity Control System 7 is located at box house.Leakage current measurement system 6 is in order to measure the leakage current in insulator creeping discharge process.
The concrete operation step of the inventive method is as follows:
1, according to the natural gradation for surface pollution evaluation method that CIGRE158 provides, search the atmospheric pollution situation of corresponding gradation for surface pollution, according to test of many times to obtain under equal gradation for surface pollution in insulator ambient atmosphere comprise the volume fraction empirical value of filthy particle.
2, test and in glass casing, put into unslaked lime in first 48 hours, and keep glass casing airtight.
3, grade is stained by insulator surface, according in insulator ambient atmosphere under the equal gradation for surface pollution obtained in the 1st step comprise the volume fraction empirical value of filthy particle, determine the volume fraction of filthy particle in air, by glass box volume computing filth amount, and be positioned over bottom chamber by after filthy particulate abrasive, simulate airborne dust by blowing device, filth is blowed floating in air.
4, utilize steam generator that relative air humidity in chamber is promoted to about 70%RH, in order to simulate air humidity during lower 20 DEG C of dense fog.Make filthy particle and water vapor remain suspended state by adjustment wind direction therebetween, and keep a period of time, test again after the solvend guaranteeing in filth fully dissolves.
Embodiment 1:
The present invention in the specific implementation, according to the division of International Electrotechnical Commission to natural filthy environment condition, test by clean for simulation (0 grade), slight filthy (1 grade), moderate filth (2 grades) and severe filth (3 grades) totally 4 gradation for surface pollution carry out.Because insulator Natural contamination condition is very complicated, by insulator salt density and ash is close instead pushes away filthy particle density in space and there is comparatively big error.Therefore according to the natural gradation for surface pollution evaluation method that CIGRE158 provides, search the atmospheric pollution situation of corresponding gradation for surface pollution, according to test of many times to obtain under equal gradation for surface pollution in insulator ambient atmosphere comprise the volume fraction empirical value of filthy particle, as shown in table 1, table 1 is that insulator contamination grade and corresponding air thereof stain situation.
48 hours before the test, unslaked lime and bamboo charcoal powder are put into glass casing and keeps it airtight.The middle water vapor of unslaked lime Absorbable rod air, the impurity suspended in bamboo charcoal powder Absorbable rod air, and take the measure that destatics to eliminate space charge intrinsic in air as far as possible.Grade is stained according to insulator surface, determine the volume fraction of filthy particle in the air under equal gradation for surface pollution nature filthy environment condition, by glass box volume computing filth amount, and be positioned over bottom glass box by after filthy particulate abrasive, simulate airborne dust by blowing device, filth is blowed floating in air.Relative air humidity in glass box is promoted to about 70%RH, in order to simulate air humidity during lower 20 DEG C of dense fog by recycling steam generator.Make filthy particle and water vapor remain suspended state by adjustment wind direction therebetween, and keep a period of time, test again after the solvend guaranteeing in filth fully dissolves.The choosing method of temperature and air pressure is the same.The complete need of each test clean climatic chamber inwall, guarantee that it keeps clean dry, can carry out test next time.Test flow chart as shown in Figure 2.
Embodiment 2:
In the specific implementation, concrete operation step is as follows in the present invention:
(1) according to the natural gradation for surface pollution evaluation method that CIGRE158 provides, search the atmospheric pollution situation of corresponding gradation for surface pollution, according to test of many times to obtain under equal gradation for surface pollution in insulator ambient atmosphere comprise the volume fraction empirical value of filthy particle;
(2) test first 48 to 72 hours, in glass casing, put into unslaked lime, and keep glass casing airtight;
(3) grade is stained by insulator surface, according in insulator ambient atmosphere under the equal gradation for surface pollution obtained in the 1st step comprise the volume fraction empirical value of filthy particle, determine the volume fraction of filthy particle in air, by glass box volume computing filth amount, and be positioned over bottom chamber by after filthy particulate abrasive, simulate airborne dust by blowing device, filth is blowed floating in air;
(4) utilize steam generator that relative air humidity in chamber is promoted to 70%RH or 82%RH, in order to simulate dense fog lower 25 DEG C or 30 DEG C time air humidity.Make filthy particle and water vapor remain suspended state by adjustment wind direction therebetween, and keep a period of time, test again after the solvend guaranteeing in filth fully dissolves.
Claims (4)
1. the Criterion of Polluted Insulator simulation experiment method based on volume fraction filthy in air, it is characterized in that: it is by the filthy laboratory of insulator artificial, grade is stained according to insulator surface, determine the volume fraction of filthy particle in the air under equal gradation for surface pollution nature filthy environment condition, by the test method of chamber volume computing filth amount;
Concrete operation step is as follows:
(1) according to the natural gradation for surface pollution evaluation method that CIGRE158 provides, search the atmospheric pollution situation of corresponding gradation for surface pollution, according to test of many times to obtain under equal gradation for surface pollution in insulator ambient atmosphere comprise the volume fraction empirical value of filthy particle;
(2) test puts into unslaked lime in first 48 ~ 72 hours in glass casing, and keeps glass casing airtight;
(3) grade is stained by insulator surface, according in insulator ambient atmosphere under the equal gradation for surface pollution obtained in the 1st step comprise the volume fraction empirical value of filthy particle, determine the volume fraction of filthy particle in air, by glass box volume computing filth amount, and be positioned over bottom chamber by after filthy particulate abrasive, simulate airborne dust by blowing device, filth is blowed floating in air;
(4) utilize steam generator that relative air humidity in chamber is promoted to 60%RH ~ 82%RH, air humidity during in order to simulate under dense fog 20 ~ 30 DEG C; Make filthy particle and water vapor remain suspended state by adjustment wind direction therebetween, and keep a period of time, test again after the solvend guaranteeing in filth fully dissolves.
2. a kind of Criterion of Polluted Insulator simulation experiment method based on volume fraction filthy in air according to claim 1, it is characterized in that: the filthy laboratory of described insulator artificial, be connected to form by glass casing and spraying system, Temperature/Humidity Control System (7) is provided with in glass casing, glass casing is provided with ultraviolet visualization window (4), and glass box is external connects leakage current measurement system (6).
3. a kind of Criterion of Polluted Insulator simulation experiment method based on volume fraction filthy in air according to claim 1, it is characterized in that: described mist system by being arranged on the external purification plant of glass box (1), micro pump (2), high-pressure hydraulic pump (3), and is arranged on atomizer (5) composition in glass casing;
The wherein connection water source, one end of purification plant (1), the other end of purification plant (1) connects micro pump (2), and the other end of micro pump (2) connects high-pressure hydraulic pump (3), and the other end of high-pressure hydraulic pump (3) connects atomizer (5); First deionized water is introduced purification plant (1), input in high-pressure hydraulic pump (3) through micro pump (2), heating atomization in high-pressure hydraulic pump (3), spray in the glass casing in artificial pollution laboratory finally by atomizer (5).
4. a kind of Criterion of Polluted Insulator simulation experiment method based on volume fraction filthy in air according to claim 1, is characterized in that: described concrete operation step is as follows:
(1) before the test 48 hours, unslaked lime and bamboo charcoal powder are put into glass casing and keeps it airtight; The middle water vapor of unslaked lime Absorbable rod air, the impurity suspended in bamboo charcoal powder Absorbable rod air, and take the measure that destatics to eliminate space charge intrinsic in air as far as possible;
(2) grade is stained according to insulator surface, determine the volume fraction of filthy particle in the air under equal gradation for surface pollution nature filthy environment condition, by glass box volume computing filth amount, and be positioned over bottom glass box by after filthy particulate abrasive, simulate airborne dust by blowing device, filth is blowed floating in air;
(3) recycle steam generator and relative air humidity in glass box is promoted to about 70%RH, in order to simulate air humidity during lower 20 DEG C of dense fog;
(4) therebetween, make filthy particle and water vapor remain suspended state by adjustment wind direction, and keep a period of time, test again after the solvend guaranteeing in filth fully dissolves; The choosing method of temperature and air pressure is the same; The complete need of each test clean climatic chamber inwall, guarantee that it keeps clean dry, can carry out test next time.
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| CN105067975A (en) * | 2015-08-03 | 2015-11-18 | 国网天津市电力公司 | Test method for analyzing influences imposed on external insulation of power transmission and transformation equipment by haze |
| CN105548836A (en) * | 2015-12-10 | 2016-05-04 | 国网山东省电力公司电力科学研究院 | Artificial fog generating method and device for insulator pollution flashover test |
| CN105866598A (en) * | 2016-05-27 | 2016-08-17 | 国网江苏省电力公司电力科学研究院 | Charged dirt retention test device for 220kV suspension insulator |
| CN106814269A (en) * | 2016-12-14 | 2017-06-09 | 国家电网公司 | Monolithic insulator Natural contamination attribute testing data handling system and processing method |
| CN109001373A (en) * | 2018-06-13 | 2018-12-14 | 华北电力大学 | A kind of sunykatuib analysis system and method for environment simulator and conducting wire nonpolluting coating |
| CN109596957A (en) * | 2018-12-13 | 2019-04-09 | 清华大学深圳研究生院 | A kind of method and device for simulating coastal insulator rapid contamination accumulation |
| CN110208659A (en) * | 2019-06-04 | 2019-09-06 | 国网江苏省电力有限公司电力科学研究院 | Testing device and testing method for carrying out large-tonnage insulator artificial pollution test |
| CN111190084A (en) * | 2020-02-13 | 2020-05-22 | 云南电网有限责任公司曲靖供电局 | Pollution test method for lightning arrester |
| CN111308293A (en) * | 2020-03-27 | 2020-06-19 | 国网甘肃省电力公司电力科学研究院 | Typical defect fault identification method for electric power external insulation equipment based on ultraviolet imaging |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067975A (en) * | 2015-08-03 | 2015-11-18 | 国网天津市电力公司 | Test method for analyzing influences imposed on external insulation of power transmission and transformation equipment by haze |
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| CN105548836A (en) * | 2015-12-10 | 2016-05-04 | 国网山东省电力公司电力科学研究院 | Artificial fog generating method and device for insulator pollution flashover test |
| CN105866598A (en) * | 2016-05-27 | 2016-08-17 | 国网江苏省电力公司电力科学研究院 | Charged dirt retention test device for 220kV suspension insulator |
| CN106814269A (en) * | 2016-12-14 | 2017-06-09 | 国家电网公司 | Monolithic insulator Natural contamination attribute testing data handling system and processing method |
| CN106814269B (en) * | 2016-12-14 | 2020-02-18 | 国家电网公司 | System and method for processing natural dirt accumulation characteristic test data of single-chip insulator |
| CN109001373A (en) * | 2018-06-13 | 2018-12-14 | 华北电力大学 | A kind of sunykatuib analysis system and method for environment simulator and conducting wire nonpolluting coating |
| CN109596957A (en) * | 2018-12-13 | 2019-04-09 | 清华大学深圳研究生院 | A kind of method and device for simulating coastal insulator rapid contamination accumulation |
| CN110208659A (en) * | 2019-06-04 | 2019-09-06 | 国网江苏省电力有限公司电力科学研究院 | Testing device and testing method for carrying out large-tonnage insulator artificial pollution test |
| CN110208659B (en) * | 2019-06-04 | 2022-05-13 | 国网江苏省电力有限公司电力科学研究院 | Test device and test method for carrying out large-tonnage insulator artificial pollution test |
| CN111190084A (en) * | 2020-02-13 | 2020-05-22 | 云南电网有限责任公司曲靖供电局 | Pollution test method for lightning arrester |
| CN111308293A (en) * | 2020-03-27 | 2020-06-19 | 国网甘肃省电力公司电力科学研究院 | Typical defect fault identification method for electric power external insulation equipment based on ultraviolet imaging |
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Application publication date: 20150610 |