CN103197207A - Insulation supporting part electrical-ageing-resistance analysis method for high-voltage electrical appliances - Google Patents
Insulation supporting part electrical-ageing-resistance analysis method for high-voltage electrical appliances Download PDFInfo
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- CN103197207A CN103197207A CN2013100806795A CN201310080679A CN103197207A CN 103197207 A CN103197207 A CN 103197207A CN 2013100806795 A CN2013100806795 A CN 2013100806795A CN 201310080679 A CN201310080679 A CN 201310080679A CN 103197207 A CN103197207 A CN 103197207A
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- insulated support
- ageing
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- insulation supporting
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Abstract
Provided is an insulation supporting part electrical-ageing-resistance analysis method for high-voltage electrical appliances. According to the method, under simulated actual work environment of insulation supporting parts, normal insulation supporting parts and insulation supporting parts with different defects are grouped for an electrical ageing test, 30-40 days is regarded as a complete electrical ageing time interval, and 5 days within the time interval is regarded as a period, and the parameters of partial discharge characteristics, dielectric loss factors and leakage current of the insulation supporting parts, and decomposition products and content of SF6 gas are tested in each period. Then the data are analyzed comprehensively, relevance of each parameter with electrical ageing time is obtained, and therefore ageing degree of the insulation supporting parts in different times can be judged and electrical-ageing-resistance of the insulation supporting parts can be inferred. The insulation supporting part electrical-ageing-resistance analysis method is applicable to analysis and evaluation of the electrical-ageing-resistance of the insulation supporting parts for the SF6 gas insulation high-voltage electrical appliances, and promotes quality improvement of SF6 high-voltage electrical equipment entering power grids.
Description
Technical field
The present invention relates to a kind of SF
6Gas insulated high voltage electrical equipment belongs to the power transmission and transformation technical field with the anti-electric ageing properties analytical approach of insulated support.
Background technology
SF
6Gas insulated high voltage electrical equipment plays mechanical support and electrical isolation effect with insulated support, is in usually under the effect of long-time high field intensity, and running environment is abominable.Therefore, its anti-electric ageing properties is very important.
A lot of SF in recent years
6The gas insulated high voltage apparatus failure the analysis showed that the anti-electric ageing properties deficiency of insulated support is one of key factor that causes the high-voltage electrical equipment fault.Therefore, the anti-electric ageing properties analytical approach of a kind of insulated support is proposed with the anti-electric ageing properties of accurate assessment insulated support, significant for the safe operation that promotes High-Voltage Electrical Appliances.
Summary of the invention
The present invention seeks to propose the anti-electric ageing properties analytical approach of a kind of insulated support, be SF
6High-voltage electrical equipment manufacturing plant and power supply department are accurately assessed the anti-electric ageing properties of insulated support foundation are provided.
Technical scheme of the present invention is, the inventive method is in the insulated support actual working environment of simulation, carry out electrical ageing test with normally reaching the insulated support grouping that has different defectives, 30-40 days to be the aging period of a complete electricity, be one-period with 5 days in period, the following parameter of each cycle build-in test: the Characteristics of Partial Discharge of insulated support; The dielectric dissipation factor of insulated support and Leakage Current; SF
6Gas decomposition product and content; The above data of analysis-by-synthesis obtain the correlativity of parameters and electric digestion time then, thereby judge the degree of aging under the insulated support different times, infer the anti-electric ageing properties of insulated support.
SF of the present invention
6Gas insulated high voltage electrical equipment comprises the steps: with the anti-electric ageing properties analytical approach of insulated support
1, analog insulation support member actual working environment;
2, will normally reach the insulated support that the has different defectives electrical ageing test that in simulated environment, divides into groups to carry out;
3,30-40 days being the aging period of a complete electricity, be one-period with 5 days in the period, the following parameter of each cycle build-in test: the Characteristics of Partial Discharge of insulated support; The dielectric dissipation factor of insulated support and Leakage Current; SF
6Gas decomposition product and content;
4, the above data of analysis-by-synthesis obtain the correlativity of parameters and electric digestion time, thereby judge the degree of aging under the insulated support different times, infer the anti-electric ageing properties of insulated support.
The insulated support actual working environment of simulating in the inventive method adopts the experimental enviroment identical with operation conditions, comprises pressure, temperature, and electric field intensity, can simulate the insulated support ageing process in the actual motion high-voltage electrical equipment.
The Characteristics of Partial Discharge of insulated support comprises discharge capacity-discharge phase distribution character Q-φ in the inventive method, discharge time discharge phase distribution character n-φ, discharge capacity-discharge time-discharge phase distribution character Q-φ-n, and the measure of skewness Sk of above-mentioned three distribution collection of illustrative plates, kurtosis Ku, local peaks number Pe parameter.
The SF of indication in the inventive method
6Gas decomposition product is produced by different defect type insulated supports: the SF of edge flashing
6Gas decomposition product mainly contains: CO
2, CO, CF
4, C
3F
8The SF that electric arc cut-offs
6Gas decomposition product mainly contains: CF
4, CO
2, SO
2F
2, SOF
2, COS; The SF of local overheating
6Gas decomposition product mainly contains: H
2S, CO, CO
2, CF
4
The invention has the beneficial effects as follows, by the anti-electric ageing properties analytical approach of effective insulated support that proposes, thereby accurately assess the anti-electric ageing properties of insulated support, be SF
6High-voltage electrical equipment manufacturing plant and power supply department are in time grasped the anti-electric ageing properties of networking insulated support, to promote SF
6The networking quality of high voltage electric equipment improves.
The inventive method is applicable to analysis and evaluation SF
6Gas insulated high voltage electrical equipment promotes networking SF with the anti-electric ageing properties of insulated support
6The quality of high voltage electric equipment improves.
Description of drawings
Fig. 1 provides the closed tank sectional view of simulation actual working environment for the insulated support aging test;
Fig. 2 is the anti-electric ageing properties analytical approach implementing procedure figure of insulated support;
Picture in picture number: the 11st, insulating sleeve; The 12nd, conductor.
Embodiment
SF
6Gas insulated high voltage electrical equipment is as follows with the embodiment of the anti-electric ageing properties analytical approach of insulated support:
1) analog insulation support member actual working environment provides the SF that meets the requirements
6Gaseous tension, temperature, and electric field intensity: SF
6Gaseous tension is 0.35MPa; Temperature is 20 ℃ of room temperatures; Electric field intensity is 20kV/mm.
2) will normally reach the insulated support grouping that has different defectives (metallic particles pollution, air gap, surface crack) and carry out electrical ageing test.
3) 30-40 days being the aging period of a complete electricity, be one-period with 5 days in the period, the following parameter of each cycle build-in test: the Characteristics of Partial Discharge of insulated support (discharge capacity, discharge energy, discharge fingerprint and spectrogram); The dielectric dissipation factor of insulated support and Leakage Current; SF
6Gas decomposition product and content.
Wherein, Characteristics of Partial Discharge refers to that parameters such as discharge capacity Q and discharge time n are with discharge phase φ distribution situation, comprise discharge capacity-discharge phase distribution character Q-φ, discharge time discharge phase distribution character n-φ, and discharge capacity-discharge time-discharge phase distribution character Q-φ-n, and the discharge fingerprint refers to the parameters such as measure of skewness Sk, kurtosis Ku, local peaks number Pe of above-mentioned three distribution collection of illustrative plates, and different defectives has different flash-over characteristics.The dielectric dissipation factor of insulated support and Leakage Current are with the situation of change of digestion time.
Different defect type insulated supports have different SF
6Gas decomposition product:
The SF of edge flashing
6Gas decomposition product mainly contains: CO
2, CO, CF
4, C
3F
8
The SF that electric arc cut-offs
6Gas decomposition product mainly contains: CF
4, CO
2, SO
2F
2, SOF
2, COS;
The SF of local overheating
6Gas decomposition product mainly contains: H
2S, CO, CO
2, CF
4
4) the above data of analysis-by-synthesis obtain the correlativity of parameters and electric digestion time, thereby judge the degree of aging under the insulated support different times, infer the anti-electric ageing properties of insulated support.
Anti-electric aging characteristics and the partial discharge quantity under its rated operational voltage, dielectric dissipation factor and the Leakage Current situation of change of insulating part have direct relation, partial discharge quantity under the rated operational voltage, dielectric dissipation factor and Leakage Current increase more fast, and the anti-electric aging characteristics of insulating part are more poor.The partial discharge quantity of insulated support, dielectric dissipation factor and Leakage Current growth pattern under the electric digestion time according to the rules can be inferred the anti-electric aging characteristics of insulated support.
Claims (3)
1. anti-electric ageing properties analytical approach of insulated support, it is characterized in that, described method is carried out electrical ageing test with normally reaching the insulated support grouping that has different defectives in the insulated support actual working environment of simulation, be the aging period of a complete electricity with 30-40 days; Be one-period with 5 days in period, each cycle build-in test obtains the Characteristics of Partial Discharge of insulated support; The dielectric dissipation factor of insulated support and Leakage Current; SF
6Gas decomposition product and content; The above data of analysis-by-synthesis obtain the correlativity of parameters and electric digestion time then, thereby judge the degree of aging under the insulated support different times, infer the anti-electric ageing properties of insulated support.
2. the anti-electric ageing properties analytical approach of insulated support according to claim 1, it is characterized in that, the insulated support actual working environment of described simulation, adopt the experimental enviroment identical with operation conditions, comprise pressure, temperature, and electric field intensity, can simulate the insulated support ageing process in the actual motion high-voltage electrical equipment.
3. the anti-electric ageing properties analytical approach of insulated support according to claim 1, it is characterized in that, the Characteristics of Partial Discharge of described insulated support comprises discharge capacity-discharge phase distribution character Q-φ, discharge time discharge phase distribution character n-φ, discharge capacity-discharge time-discharge phase distribution character Q-φ-n, and the measure of skewness Sk of above-mentioned three distribution collection of illustrative plates, kurtosis Ku, local peaks number Pe parameter.
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| CN2013100806795A CN103197207A (en) | 2013-03-14 | 2013-03-14 | Insulation supporting part electrical-ageing-resistance analysis method for high-voltage electrical appliances |
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|---|---|---|---|
| CN2013100806795A CN103197207A (en) | 2013-03-14 | 2013-03-14 | Insulation supporting part electrical-ageing-resistance analysis method for high-voltage electrical appliances |
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|---|---|
| CN103197207A true CN103197207A (en) | 2013-07-10 |
Family
ID=48719889
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049167A (en) * | 2014-07-04 | 2014-09-17 | 国家电网公司 | Method for simulating defects of oil impregnated paper bushings |
| CN104267065A (en) * | 2014-10-17 | 2015-01-07 | 国家电网公司 | Method for detecting impact of SF6 gas states on insulation materials |
| CN105510780A (en) * | 2015-11-27 | 2016-04-20 | 云南电网有限责任公司电力科学研究院 | Insulation testing system and method for insulating pull rod of SF6 high-voltage electric appliance |
| CN104049167B (en) * | 2014-07-04 | 2016-11-30 | 国家电网公司 | A kind of method of simulated oil impregnated paper casing imperfection |
| CN109031074A (en) * | 2018-09-06 | 2018-12-18 | 广东电网有限责任公司 | A kind of GIS solid insulation life-span prediction method and device |
| CN113640627A (en) * | 2021-07-08 | 2021-11-12 | 西安理工大学 | Electric automobile insulating material service life prediction method based on partial discharge |
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| CN101408579A (en) * | 2008-11-21 | 2009-04-15 | 重庆大学 | Oil paper insulated electrothermic aging test and local discharge integrated detection device of transformer |
| CN101738572A (en) * | 2008-11-11 | 2010-06-16 | 上海久隆电力（集团）有限公司 | Method for testing service life of medium-voltage solid insulation power cable |
| CN102621434A (en) * | 2012-04-19 | 2012-08-01 | 山东大学 | Nonlinear fuzzy detection method for operating safety of power cable tunnel |
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| CN101738572A (en) * | 2008-11-11 | 2010-06-16 | 上海久隆电力（集团）有限公司 | Method for testing service life of medium-voltage solid insulation power cable |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049167A (en) * | 2014-07-04 | 2014-09-17 | 国家电网公司 | Method for simulating defects of oil impregnated paper bushings |
| CN104049167B (en) * | 2014-07-04 | 2016-11-30 | 国家电网公司 | A kind of method of simulated oil impregnated paper casing imperfection |
| CN104267065A (en) * | 2014-10-17 | 2015-01-07 | 国家电网公司 | Method for detecting impact of SF6 gas states on insulation materials |
| CN105510780A (en) * | 2015-11-27 | 2016-04-20 | 云南电网有限责任公司电力科学研究院 | Insulation testing system and method for insulating pull rod of SF6 high-voltage electric appliance |
| CN105510780B (en) * | 2015-11-27 | 2018-11-16 | 云南电网有限责任公司电力科学研究院 | SF6 High-Voltage Electrical Appliances insulated pull rod Insulation Test system and method |
| CN109031074A (en) * | 2018-09-06 | 2018-12-18 | 广东电网有限责任公司 | A kind of GIS solid insulation life-span prediction method and device |
| CN113640627A (en) * | 2021-07-08 | 2021-11-12 | 西安理工大学 | Electric automobile insulating material service life prediction method based on partial discharge |
| CN113640627B (en) * | 2021-07-08 | 2023-10-24 | 西安理工大学 | Electric automobile insulating material service life prediction method based on partial discharge |
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Application publication date: 20130710 |