CN203455389U - Simulation test stand for power transmission line insulator leakage current - Google Patents
Simulation test stand for power transmission line insulator leakage current Download PDFInfo
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- CN203455389U CN203455389U CN201320545121.5U CN201320545121U CN203455389U CN 203455389 U CN203455389 U CN 203455389U CN 201320545121 U CN201320545121 U CN 201320545121U CN 203455389 U CN203455389 U CN 203455389U
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Abstract
The utility model relates to a simulation test stand for power transmission line insulator leakage current. The test stand comprises a voltage regulator, a transformer, an artificial fog chamber, and an isolation transformer and a filter connected in series between the voltage regulator and a primary side of the transformer. A fog generator is disposed on an outer side of the artificial fog chamber. The fog generator accesses the artificial fog chamber through a nozzle. A test insulator is disposed in the artificial fog chamber. An end of a secondary side of the transformer is connected with a first protective resistor, and then accesses the artificial fog chamber and is divided into two paths in the artificial fog chamber. One path extends out of the artificial fog chamber and is connected with a second protective resistor and a protection sphere gap, and the other path is connected with an end of the test insulator. The other end of the test insulator extends out of the artificial fog chamber by a wire, and then the end of the test insulator is divided into three paths. One path is connected with an insulator leak current sampling resistor, and the other two paths are respectively connected with an end of a transient voltage suppressor and an end of a build-out resistor. The other end of the transient voltage suppressor and the other end of the build-out resistor are connected with an end of an oscilloscope, and the other end of the oscilloscope is connected with the other end of a secondary side of the transformer.
Description
Technical field
The utility model relates to the experimental provision of power industry to electric transmission line isolator Leakage Current, is conducive to pollution flashover problem to carry out system in-depth analysis, effectively prevents the generation of pollution flashover.
Background technology
In transmission line of electricity, the in the situation that contaminated insulator making moist in the external world, the external insulating strength of self can sharply decline, when normally moving, circuit may there is pollution flashover, once pollution flashover accident occurs to cause large area to have a power failure for a long time, bring huge economic loss, judge timely and accurately external insulator state, just can when insulator is got dirty, clean in real time, effectively the generation of Prevent from Dirt Flash accident.
Evaluation method-equivalent salt density method of conventional insulator contamination state is widely used in electric system, surveying work is simple, can weigh intuitively pollution level, but also exist a lot of not enough, it is measured generally and can only when having a power failure, carry out, and cannot carry out real-time assessment to filthy state.In addition, soluble salt kind in pollution layer, the close and filthy uneven distribution state of ash all can exert an influence to pollution flashover voltage, the artificial pollution of same equivalent salt density and natural contaminated insulator pollution flashover voltage difference may be very large, so be difficult to the filthy state of accurate evaluation insulator by equivalent salt density method.
By the research to Mechanism of Contamination Flashover, insulator Leakage Current comprises abundant information, can concentrated expression pollution level, the degree of making moist, bear the impact of the various factorss such as voltage and insulator shape, and detection that can real-time continuous is to characterize at present comparatively science and have the judgment criteria of realistic meaning of insulator contamination degree, so the leakage current research of insulator is significant for judgement external insulator state.
Relation between research Flashover Characteristics and mechanism and discharge current has two kinds of approach conventionally: the one, set up nature pollution test station, and the 2nd, the mode that adopts artificial pollution to test.Naturally filthy experiment can reflect the true ruuning situation of insulator objectively, but exists the test period very long, and expense is very high, and has the problem that is difficult to reproduction.And artificial pollution experiment can obtain the electrical specification of contaminated insulator under the condition of making moist in a short time, and easily reproduce the pollution flashover rule of development and extensively praised highly, be a kind of effective method of analysing in depth Mechanism of Contamination Flashover, but still do not have to supply practical insulator artificial pollution test platform at present.
Summary of the invention
The purpose of this utility model is to build a kind of insulator artificial pollution test platform, thereby obtains insulator leakage current, to further study the relation between Flashover Characteristics and mechanism and discharge current.
The technical solution of the utility model is as follows:
A kind of electric transmission line isolator leakage current simulator stand, it is characterized in that: comprise pressure regulator, transformer, artificial fog chamber, between the former limit of described pressure regulator and transformer, be serially connected with successively isolating transformer and wave filter, outside, described artificial fog chamber is provided with fog generator, fog generator leads in artificial fog chamber by jet pipe, in artificial fog chamber, be provided with test insulator, secondary one end of described transformer passes in artificial fog chamber after connecting the first protective resistance, minute two-way in artificial fog chamber, a-road-through is outside artificial fog chamber, connect the second protective resistance and protection ball gap, one tunnel connects one end of test insulator, the other end of test insulator leads to Hou Fen tri-tunnels outside artificial fog chamber by wire, one road connecting insulator leakage current sampling resistor, two-way connects respectively one end of Transient Voltage Suppressor and build-out resistor in addition, the other end of Transient Voltage Suppressor and build-out resistor is connected oscillographic one end, the other end of oscillographic another termination transformer secondary.
It is of the present utility model that to build the cycle short, cost is low, be easy to control, can select different equivalent salt densities, close and the humiture of equivalent ash, simulates several environment easily, deeply systematically studies better the relation of Mechanism of Contamination Flashover and insulator leakage current, can also adopt dissimilar insulator, sum up the difference of different insulative leakage current under equivalent environment.
The utility model can be insulator dirty degree testing product and carries out basic research, by detecting insulator leakage current, can realize in real time on-line monitoring effectively, can effectively prevent the generation of insulator pollution flashover accident, increased power supply reliability, reduce power off time, saved a large amount of manpower and materials and financial resources.
The utility model can detect its performance and reliability for detection of the performance of insulator dirty degree detection type product, the come into operation quality of product of effective guarantee.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present utility model;
Fig. 2 is the structural representation of artificial fog chamber.
Embodiment
As Fig. 1, shown in Fig. 2, comprise pressure regulator 1, transformer 2, artificial fog chamber 3, between described pressure regulator 1 and the former limit of transformer 2, be serially connected with successively isolating transformer 4 and wave filter 5, 5 outsides, described artificial fog chamber are provided with fog generator 6, fog generator 6 leads in artificial fog chamber by jet pipe 7, in artificial fog chamber, be provided with test insulator 8, secondary one end of described transformer 2 passes in artificial fog chamber after connecting the first protective resistance 9, minute two-way in artificial fog chamber, a-road-through is outside artificial fog chamber, connect the second protective resistance 10 and protection ball gap 11, one tunnel connects one end of test insulator 8, the other end of test insulator 8 leads to Hou Fen tri-tunnels outside artificial fog chamber by wire, one road connecting insulator leakage current sampling resistor 12, two-way connects respectively one end of Transient Voltage Suppressor 13 and build-out resistor 14 in addition, Transient Voltage Suppressor 13 is connected one end of oscillograph 15 with the other end of build-out resistor 14, the other end of another termination transformer secondary of oscillograph 15.
3 bottoms, described artificial fog chamber are provided with leaking hole 16.
The isolating transformer sealing between the former limit of described transformer and pressure regulator and wave filter are for the harmonic component in filtering experiment power supply, obtain clean power frequency supply.
The withstand voltage of described the first protective resistance and the second protective resistance is 250kV, and resistance is 105k Ω.Described build-out resistor is the noninductive resistance of 50 Ω.
Artificial fog chamber can provide mist, the simulated environment such as hot and cold, and it is organic glass that artificial fog chamber adopts material, and thickness is 10mm.Artificial mist leads in artificial fog chamber by fog generator.In order to control artificial mist indoor temperature, the way that can select high-power bulb and exhaust fan to combine in artificial fog chamber; The humidity of insulator utilizes spraying plant to control, and insulator adopts solid cladding method, can select the different close and equivalent salt densities of equivalence ash.
Claims (2)
1. an electric transmission line isolator leakage current simulator stand, it is characterized in that: comprise pressure regulator, transformer, artificial fog chamber, between the former limit of described pressure regulator and transformer, be serially connected with successively isolating transformer and wave filter, outside, described artificial fog chamber is provided with fog generator, fog generator leads in artificial fog chamber by jet pipe, in artificial fog chamber, be provided with test insulator, secondary one end of described transformer passes in artificial fog chamber after connecting the first protective resistance, minute two-way in artificial fog chamber, a-road-through is outside artificial fog chamber, connect the second protective resistance and protection ball gap, one tunnel connects one end of test insulator, the other end of test insulator leads to Hou Fen tri-tunnels outside artificial fog chamber by wire, one road connecting insulator leakage current sampling resistor, two-way connects respectively one end of Transient Voltage Suppressor and build-out resistor in addition, the other end of Transient Voltage Suppressor and build-out resistor is connected oscillographic one end, the other end of oscillographic another termination transformer secondary.
2. electric transmission line isolator leakage current simulator stand according to claim 1, is characterized in that: bottom, described artificial fog chamber is provided with leaking hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320545121.5U CN203455389U (en) | 2013-09-03 | 2013-09-03 | Simulation test stand for power transmission line insulator leakage current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320545121.5U CN203455389U (en) | 2013-09-03 | 2013-09-03 | Simulation test stand for power transmission line insulator leakage current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203455389U true CN203455389U (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320545121.5U Expired - Fee Related CN203455389U (en) | 2013-09-03 | 2013-09-03 | Simulation test stand for power transmission line insulator leakage current |
Country Status (1)
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| CN (1) | CN203455389U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569767A (en) * | 2015-01-21 | 2015-04-29 | 国家电网公司 | Leakage current signal acquisition system of insulator |
| CN104749502A (en) * | 2015-03-30 | 2015-07-01 | 国家电网公司 | Device for simulating natural fog of high-pressure artificial climate test room |
| CN105337506A (en) * | 2014-08-07 | 2016-02-17 | 南京南瑞继保电气有限公司 | Energy supply device from low voltage to high voltage |
| CN105629041A (en) * | 2016-03-03 | 2016-06-01 | 国网江西省电力科学研究院 | Method and system for acquiring contaminated insulator surface arc image information |
| CN109269973A (en) * | 2018-09-29 | 2019-01-25 | 国网四川省电力公司电力科学研究院 | Insulators on HVDC Transmission Line fitting DC electric field corrosion experiment system and method |
| CN110058135A (en) * | 2019-05-14 | 2019-07-26 | 云南电网有限责任公司电力科学研究院 | Autoelectronic current detects pilot system between a kind of arc-chutes contact |
| CN110618357A (en) * | 2019-09-18 | 2019-12-27 | 国网辽宁省电力有限公司电力科学研究院 | Distribution line insulated conductor rainwater on discharge influence test device and method |
| CN113092944A (en) * | 2021-04-12 | 2021-07-09 | 广东电网有限责任公司江门供电局 | Insulation fault point detection method and related device for low-voltage line |
-
2013
- 2013-09-03 CN CN201320545121.5U patent/CN203455389U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337506A (en) * | 2014-08-07 | 2016-02-17 | 南京南瑞继保电气有限公司 | Energy supply device from low voltage to high voltage |
| CN104569767A (en) * | 2015-01-21 | 2015-04-29 | 国家电网公司 | Leakage current signal acquisition system of insulator |
| CN104749502A (en) * | 2015-03-30 | 2015-07-01 | 国家电网公司 | Device for simulating natural fog of high-pressure artificial climate test room |
| CN105629041A (en) * | 2016-03-03 | 2016-06-01 | 国网江西省电力科学研究院 | Method and system for acquiring contaminated insulator surface arc image information |
| CN109269973A (en) * | 2018-09-29 | 2019-01-25 | 国网四川省电力公司电力科学研究院 | Insulators on HVDC Transmission Line fitting DC electric field corrosion experiment system and method |
| CN109269973B (en) * | 2018-09-29 | 2021-03-26 | 国网四川省电力公司电力科学研究院 | DC electric transmission line insulator hardware DC electric field corrosion experiment system and method |
| CN110058135A (en) * | 2019-05-14 | 2019-07-26 | 云南电网有限责任公司电力科学研究院 | Autoelectronic current detects pilot system between a kind of arc-chutes contact |
| CN110618357A (en) * | 2019-09-18 | 2019-12-27 | 国网辽宁省电力有限公司电力科学研究院 | Distribution line insulated conductor rainwater on discharge influence test device and method |
| CN113092944A (en) * | 2021-04-12 | 2021-07-09 | 广东电网有限责任公司江门供电局 | Insulation fault point detection method and related device for low-voltage line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20170903 |