CN1598605A - On-line method for testing leakage current value of power station zine oxide lightning protector - Google Patents
On-line method for testing leakage current value of power station zine oxide lightning protector Download PDFInfo
- Publication number
- CN1598605A CN1598605A CN 03151093 CN03151093A CN1598605A CN 1598605 A CN1598605 A CN 1598605A CN 03151093 CN03151093 CN 03151093 CN 03151093 A CN03151093 A CN 03151093A CN 1598605 A CN1598605 A CN 1598605A
- Authority
- CN
- China
- Prior art keywords
- arrester
- leakage current
- lightning arrester
- current
- power station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Thermistors And Varistors (AREA)
Abstract
The invention discloses an online detecting method of leaky current value of power station style zinc oxide arrester, it includes following steps: at first, make electrical insulation to the inner chip in the arrester and metal flange under arrester; secondly, lead the leaky current to the earth through the flange, at the same time, sampling the leaky current signal of the inner chip; at last, put out the leaky current and decompound it. The invention makes insulation of inner chip and under flange, the sampling signal is from the arrester directly, and can be detected and analyzed by connecting monitor, and the surface current of the arrester don not cross the monitor, it is leaded to the earth directly. So it is helpful to reflect the working current changing of the inner chip in the arrester by the leaky current monitor, it strengthens the validity of arrester and quantizing interpretability to improve the security and reliability of the system running.
Description
Technical field
The present invention relates to the online test method of the leakage current values of a kind of power station type Zinc-Oxide Arrester.
Background technology
Zinc-Oxide Arrester is a kind of protection equipment that the protection electric equipment is avoided the superpotential infringement.Because nonlinear characteristic that Zinc-Oxide Arrester is superior and good through-current capability; now accepted and be extensive use of by vast power department user; yet a large amount of uses along with Zinc-Oxide Arrester; cause protected equipment to be damaged and cause that electric power accident happens occasionally because of lightning arrester itself has an accident, especially in a single day 110kV and above electric pressure Zinc-Oxide Arrester have an accident and will bring about great losses to the user.Therefore improving constantly the manufacture level of lightning arrester, guaranteeing to actively develop the running status of lightning arrester is done the safe operation that further research will help power equipment on the basis of lightning arrester workmanship.
At present, judgement 110kV grade and above lightning arrester wear out and generally adopt the online test method of leakage current of an arrester value with the insulation damages degree, as shown in Figure 1 and Figure 2, leakage current monitor 2 is installed on the ground loop of lower end (that is: the lower flange 1 of lightning arrester).This method make earial drainage monitor 2 measure in the total current of gained not only comprised the leakage current I of lightning arrester inside
2, also comprised the leakage current I on lightning arrester surface
1And the leakage current I on this lightning arrester surface
1Be to be subjected to the influence of external environment (factors such as humidity, filthy condition) and to change, so this total current (I
1+ I
2) can not effectively reflect the true ruuning situation of lightning arrester built-in electrical insulation (as: quality of core body 3 zinc paste chip modules) and the property declared, that is: the earial drainage monitor can not correctly reflect the inner core component 3 element working current I of lightning arrester
2Variation, like this, make the security of protected power equipment operation be subjected to threat.
Summary of the invention
The object of the present invention is to provide the online test method of the leakage current values of a kind of power station type Zinc-Oxide Arrester, strengthen the validity of lightning arrester status monitoring, to improve reliability of system operation.
The online test method of the leakage current values of a kind of power station provided by the present invention type Zinc-Oxide Arrester comprises the following steps: at first, and inner core component of lightning arrester and lightning arrester lower end metal flange are carried out electric insulation; Secondly, with the surface leakage current of the online generation of lightning arrester through lower end metal flange ground connection, the signal of the inner core component leakage current of Direct Sampling lightning arrester simultaneously; At last, the leakage current of the inner core component of output lightning arrester.
Adopted above-mentioned technical solution, that is: the metal lower flange of inner core body of lightning arrester and lightning arrester is taked the electric insulation measure, sampled signal is directly taken from the inner core component of lightning arrester, and can connect the earial drainage monitor after the output and detect and decompose, the earial drainage monitor and the lightning arrester surface leakage current is no longer flowed through, direct ground connection, like this, help the earial drainage monitor can correctly reflect the variation of the inner core body component element of lightning arrester working current, strengthen the validity of lightning arrester status monitoring and the property declared, with the security and the reliability of raising system operation.
Description of drawings
Fig. 1 is the schematic diagram of online detection of the leakage current values of existing power station type Zinc-Oxide Arrester;
Fig. 2 is the equivalent circuit diagram of Fig. 1;
Fig. 3 is the schematic diagram of online detection of the leakage current values of power station of the present invention type Zinc-Oxide Arrester.
Fig. 4 is the equivalent circuit diagram of Fig. 3.
Embodiment
The present invention, that is: the online test method of the leakage current values of power station type Zinc-Oxide Arrester, as shown in Figure 3, the filling insulating material carries out electric insulation between inner core component 3 of lightning arrester and lightning arrester lower end metal flange 1 earlier; Surface leakage current I with the online generation of lightning arrester
1Through lower end metal flange 1 ground connection, the leakage current I of the inner core component 3 of while Direct Sampling lightning arrester
2Signal; Output lightning arrester internal leakage electric current I
2, link to each other with the earial drainage monitor of outside.
The earial drainage monitor because the lightning arrester surface leakage current is no longer flowed through, the detected leakage current values of earial drainage monitor can correctly reflect the variation of the inner core body component element of lightning arrester working current.
As shown in Figure 4, the equivalent circuit diagram by the leakage current of lightning arrester can get:
What the equivalent circuit diagram of the leakage current of existing lightning arrester (as shown in Figure 2) was different with the equivalent circuit diagram of the leakage current of lightning arrester of the present invention is to have increased R among the present invention
3Substitutional resistance, and because the current potential of ground connection one side is basic identical, earial drainage monitor 2 table meter formed resistance (generally at 10k Ω) just are again because resistance R
3Numerical value determined (generally reaching M Ω level) by insulation resistance, so resistance R
3Measurement influence for the table meter can be ignored.
Claims (1)
1. the online test method of the leakage current values of a power station type Zinc-Oxide Arrester comprises the following steps:
At first, inner core component of lightning arrester and lightning arrester lower end metal flange are carried out electric insulation;
Secondly, with the surface leakage current of the online generation of lightning arrester through lower end metal flange ground connection, the signal of the inner core component leakage current of Direct Sampling lightning arrester simultaneously;
At last, the leakage current of the inner core component of output lightning arrester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031510930A CN100368817C (en) | 2003-09-19 | 2003-09-19 | On-line method for testing leakage current value of power station zine oxide lightning protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031510930A CN100368817C (en) | 2003-09-19 | 2003-09-19 | On-line method for testing leakage current value of power station zine oxide lightning protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1598605A true CN1598605A (en) | 2005-03-23 |
| CN100368817C CN100368817C (en) | 2008-02-13 |
Family
ID=34659842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031510930A Expired - Lifetime CN100368817C (en) | 2003-09-19 | 2003-09-19 | On-line method for testing leakage current value of power station zine oxide lightning protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100368817C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944738A (en) * | 2012-12-07 | 2013-02-27 | 上海市电力公司 | Detection system and detection method for leakage current of switchgear arrester |
| CN104297617A (en) * | 2014-10-12 | 2015-01-21 | 胡智宏 | Measuring transducer for leakage current of lightning arrester |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61112521A (en) * | 1984-11-05 | 1986-05-30 | 中国電力株式会社 | Protective system of transmission line |
| CN2594803Y (en) * | 2002-12-11 | 2003-12-24 | 武汉恒安电气有限责任公司 | Extending board tray for testing electric circuit boards |
-
2003
- 2003-09-19 CN CNB031510930A patent/CN100368817C/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944738A (en) * | 2012-12-07 | 2013-02-27 | 上海市电力公司 | Detection system and detection method for leakage current of switchgear arrester |
| CN104297617A (en) * | 2014-10-12 | 2015-01-21 | 胡智宏 | Measuring transducer for leakage current of lightning arrester |
| CN104297617B (en) * | 2014-10-12 | 2017-07-07 | 胡智宏 | Lightning arrester leakance measurement sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100368817C (en) | 2008-02-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204256093U (en) | The On-line Fault monitoring device of cable splice in a kind of 10 ~ 35kV power distribution network | |
| CN104407270A (en) | Online fault monitoring device for cable connector in 10-35kV power distribution network and method for evaluating system state | |
| CN104280637A (en) | Lightning arrester online monitoring signal collection device with shielding function | |
| CN109035839B (en) | Comprehensive monitoring method for electrical safety of traffic signal device | |
| CN208596190U (en) | The arrester on-line monitoring system of tape counter | |
| CN112904078A (en) | Giant magnetoresistance effect-based reactor branch current monitoring system and method | |
| CN112526240A (en) | Non-contact broadband overvoltage online monitoring device | |
| CN104849597A (en) | Metal oxide lightning arrester online monitoring method | |
| CN102721854A (en) | Method and system for detecting overvoltage signal of power grid | |
| CN207636665U (en) | A kind of Leakage Current harvester | |
| CN212808481U (en) | GIL electric arc ultrasonic fault location on-line monitoring device | |
| CN207817105U (en) | A kind of electric transmission line isolator pollution flashover automatic visual observation system | |
| CN204065293U (en) | With the lightning arrester on-Line Monitor Device of function of shielding | |
| CN204065294U (en) | With the lightning arrester line monitor signal harvester of function of shielding | |
| CN103472349A (en) | Method for intelligent online analysis of running state of communication cable | |
| CN117907766A (en) | GIS ultrahigh frequency partial discharge monitoring system and method | |
| CN1598605A (en) | On-line method for testing leakage current value of power station zine oxide lightning protector | |
| CN107768056A (en) | A kind of arrester and its application method of built-in current transformer | |
| CN107894519A (en) | 220kV and above more piece Zinc-Oxide Arrester integration test case | |
| CN117156312A (en) | High-sensitivity ocean platform liquid level telemetry system and debugging method | |
| CN116840614A (en) | Cable line defect sensing and early warning method based on harmonic fluctuation characteristics | |
| CN213242108U (en) | Monitoring integration arrester | |
| CN202600034U (en) | Power grid overvoltage signal detection system | |
| CN108872747A (en) | Surge protector current in resistance property extraction element and its method based on related coefficient | |
| CN112216450A (en) | Monitoring integration arrester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI ELECTRIC COMMUNICATION CO., LTD. SHANGHAI Free format text: FORMER OWNER: SHANGHAI JIULONG ELECTRIC POWER SCIENCE + TECHNOLOGY CO., LTD. SHANGHAI ELECTRIC PORCELAIN WORKS Effective date: 20120928 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 200002 HUANGPU, SHANGHAI TO: 200122 PUDONG NEW AREA, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120928 Address after: 200122 Shanghai City, Pudong New Area source deep road, No. 1122 Patentee after: SHANGHAI MUNICIPAL ELECTRIC POWER Co. Patentee after: SHANGHAI ELECTRIC POWER COMMUNICATION Co.,Ltd. Patentee after: Shanghai Electric Porcelain Factory Patentee after: State Grid Corporation of China Address before: 200002 No. 181 East Nanjing Road, Shanghai Patentee before: SHANGHAI MUNICIPAL ELECTRIC POWER Co. Patentee before: Shanghai Jiulong Electric Power Science & Technology Co.,Ltd. Patentee before: Shanghai Electric Porcelain Factory |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080213 |