CN206209028U - A kind of test connection device of on-the-spot test lightning arrester leakance - Google Patents
A kind of test connection device of on-the-spot test lightning arrester leakance Download PDFInfo
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- CN206209028U CN206209028U CN201621082043.XU CN201621082043U CN206209028U CN 206209028 U CN206209028 U CN 206209028U CN 201621082043 U CN201621082043 U CN 201621082043U CN 206209028 U CN206209028 U CN 206209028U
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- arrester
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- connection device
- shielding line
- insulating
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Abstract
The utility model discloses a kind of test connection device of on-the-spot test lightning arrester leakance, including insulating bar, insulating cord, measurement shielding line, DC generator and leakage current tester, arrester top is equipped with grading ring；The grading ring is fixedly connected with one end of insulating bar, the other end of the insulating bar is connected with insulating cord, measurement shielding line is connected with one end of insulating cord, the measurement shielding line one end is fixed on the flange of arrester, its other end is connected with the high-pressure side of DC generator, and the earth terminal of DC generator is connected by optical fiber and leakage current tester.The purpose of this utility model is to provide a kind of test connection device of on-the-spot test lightning arrester leakance, leakage current numerical bias are big under solving the problems, such as DC reference voltage and 0.75 times of DC reference voltage, ensure that the degree of accuracy of on-the-spot test, the utility model wiring simultaneously is simple, reduce and repeat thread-changing number of times, test speed can improve 34 times.
Description
Technical field
The utility model is related to high voltage electric equipment on-site testing device, and in particular to a kind of on-the-spot test arrester electric leakage
The test connection device of stream.
Background technology
Arrester is one of important electrical equipment of power system, and its safe operation to power system plays particularly significant
Effect.In order that arrester is in power system security reliability service, according to power industry standard DL/T596-1996《Electric power sets
Standby preventive trial code》Need to carry out arrester preventive trial, wherein on-the-spot test DC reference voltage and 0.75 times
Whether leakage current experiment is to judge the normal important tests project of arrester under DC reference voltage.
But at the scene in test process, due to the influence of the factor such as position of personnel, equipment and arrester, on-the-spot test
Leakage current under D.C. reference voltage of arrester and 0.75 times of DC reference voltage, often occurs test data exception, but pull down
Carry out testing and normal phenomenon in laboratory, great inconvenience is brought for on-site maintenance.Current on-the-spot test is by experiment
The experience and historical data of personnel judged, the reliable testing program of neither one solves the problem, to operation of power networks side
Many inconvenience and puzzlement are brought with device fabrication producer.
Utility model content
The purpose of this utility model is to provide a kind of test connection device of on-the-spot test lightning arrester leakance, can be solved
The certainly big problem of leakage current numerical bias under DC reference voltage and 0.75 times of DC reference voltage, it is ensured that the standard of on-the-spot test
Exactness, while wiring is simple, reduces and repeats thread-changing number of times, and test speed improves 3-4 times.
To achieve these goals, the utility model is adopted the technical scheme that：
A kind of test connection device of on-the-spot test lightning arrester leakance, arrester top is equipped with grading ring, including installs
Insulating bar, insulating cord, measurement shielding line, DC generator and leakage current tester in grading ring side；
The insulating cord is connected by a fulcrum of insulating bar with the stage casing of measurement shielding line, the measurement shielding line
One end is connected on any flange located at arrester, and its other end is connected with the high-pressure side of DC generator, DC generator
Earth terminal connected by optical fiber and leakage current tester.
The test connection device of described on-the-spot test lightning arrester leakance also include insulation fixed pulley, wherein insulating cord around
Cross insulation fixed pulley to be connected with the stage casing of measurement shielding line, the insulation fixed pulley is arranged on insulating bar away from arrester
The other end.
The insulating bar is the insulating bar of adjustable in length.
The folder of straight line and the arrester axial direction where measuring one end being connected with located at the flange of arrester of shielding line
Angle is 90 °.
The beneficial effects of the utility model are：
The utility model leaks under providing a kind of on-the-spot test D.C. reference voltage of arrester and 0.75 times of DC reference voltage
The test connection device of electric current, it easily realizes widening the measurement same arrester of shielding line by bypassing the insulating cord on fixed pulley
Angle, can solve the problem that the big problem of leakage current numerical bias under DC reference voltage and 0.75 times of DC reference voltage, it shows
Field test data is close with laboratory test data, and the error of DC reference voltage is less than 5%, under 0.75 times of DC reference voltage
The error of leakage current is less than 15 μ A, it is ensured that the degree of accuracy of on-the-spot test；Wiring simultaneously is simple, reduces and repeats thread-changing number of times, surveys
Examination speed improves 3-4 times.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the test connection device of on-the-spot test lightning arrester leakance of the utility model；
Wherein：1st, flange；2nd, grading ring；3rd, insulating bar；4th, insulate fixed pulley；5th, insulating cord；6th, shielding line is measured；7th, it is straight
Flow-generator；8th, optical fiber；9th, leakage current tester.
Specific embodiment
Content of the present utility model is described in further details with reference to the accompanying drawings and detailed description.
Embodiment
Refer to shown in Fig. 1, a kind of test connection device of on-the-spot test lightning arrester leakance is equipped with the top of arrester
Grading ring 2, including it is installed on the insulating bar 3 of the side of grading ring 2, insulation fixed pulley 4, insulating cord 5, measurement shielding line 6, direct current hair
Raw device 7 and leakage current tester 9, the insulation fixed pulley 4 is under insulating bar 3 away from one end of arrester.The insulation
The length of bar 3 can be adjusted freely, and its diverse location according to residing for arrester and the length that adjusts insulating bar 3 make on arrester
Grading ring 2 be fixedly connected all the time with insulating bar 3；One end of wherein insulating cord 5 bypass insulation fixed pulley 4 after with measurement shielding line
6 certains for being connected to measurement shielding line 6, one end of the measurement shielding line 6 is fixed on any flange 1 located at arrester,
Its other end is connected with the high-pressure side of DC generator 7, and the earth terminal of the DC generator 7 is surveyed by optical fiber 8 and leakage current
Examination instrument 9 is connected.
The position of insulating cord 5 and measurement shielding line 6 junction is driven by pulling the other end of insulating cord 5, so as to control
Arrester axial direction processed and the angle for measuring shielding line 6.When measurement shielding line 6 is widened with the axial angle of arrester, scene is surveyed
Leakage current numerical value is little with laboratory test data error under examination DC reference voltage and 0.75 times of DC reference voltage, this implementation
In example, the other end of insulating cord 5 is pulled, where making one end being connected with located at the flange of arrester of measurement shielding line 6
The angle control of straight line and arrester axial direction at 90 ° or so, on-the-spot test DC reference voltage and 0.75 times of DC reference voltage
Under leakage current numerical value and laboratory test data closely, the error of leakage current is less than 5%, 0.75 under DC reference voltage
The error of leakage current is less than 15 μ A under times DC reference voltage, it is ensured that on-the-spot test DC reference voltage and 0.75 times of direct current ginseng
Examine the degree of accuracy of the leakage current numerical value under voltage.
Although the utility model is illustrated by specific embodiment, it will be appreciated by those skilled in the art that, not
In the case of departing from the utility model scope, various conversion and equivalent substitute can also be carried out to the utility model.In addition, being directed to
Particular condition or application, can make various modifications, without deviating from scope of the present utility model to the utility model.Therefore, this reality
Disclosed specific embodiment is not limited to new, and the whole fallen into the utility model right should be included
Implementation method.
Claims (4)
1. a kind of test connection device of on-the-spot test lightning arrester leakance, it is characterised in that arrester top is equipped with grading ring
(2), including it is installed on the insulating bar (3) of grading ring (2) side, insulating cord (5), measurement shielding line (6), DC generator (7)
With leakage current tester (9)；
The insulating cord (5) is connected by a fulcrum of insulating bar (3) with the stage casing of measurement shielding line (6), the measurement screen
The one end for covering line (6) is connected on any flange (1) located at arrester, the high-pressure side of its other end and DC generator (7)
Connection, the earth terminal of DC generator (7) is connected by optical fiber (8) and leakage current tester (9).
2. the test connection device of on-the-spot test lightning arrester leakance according to claim 1, it is characterised in that it is also wrapped
Insulation fixed pulley (4) is included, wherein insulating cord (5) bypasses insulation fixed pulley (4) and is connected with the stage casing of measurement shielding line (6), institute
Insulation fixed pulley (4) is stated on insulating bar (3) away from the other end of arrester.
3. the test connection device of on-the-spot test lightning arrester leakance according to claim 1, it is characterised in that it is described absolutely
Edge bar (3) is the insulating bar of adjustable in length.
4. the test connection device of on-the-spot test lightning arrester leakance according to claim 1 and 2, it is characterised in that survey
The axial angle of straight line and arrester where one end being connected with located at the flange of arrester (1) of amount shielding line (6) is
90°。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621082043.XU CN206209028U (en) | 2016-09-26 | 2016-09-26 | A kind of test connection device of on-the-spot test lightning arrester leakance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621082043.XU CN206209028U (en) | 2016-09-26 | 2016-09-26 | A kind of test connection device of on-the-spot test lightning arrester leakance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206209028U true CN206209028U (en) | 2017-05-31 |
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ID=58760997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621082043.XU Active CN206209028U (en) | 2016-09-26 | 2016-09-26 | A kind of test connection device of on-the-spot test lightning arrester leakance |
Country Status (1)
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| CN (1) | CN206209028U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106383291A (en) * | 2016-09-26 | 2017-02-08 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Test wiring device and method for field test of leakage current of lightning arrester |
| CN111257604A (en) * | 2020-04-09 | 2020-06-09 | 国家电网有限公司 | Upper section test wiring device for 500kV and above voltage level lightning arrester |
-
2016
- 2016-09-26 CN CN201621082043.XU patent/CN206209028U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106383291A (en) * | 2016-09-26 | 2017-02-08 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Test wiring device and method for field test of leakage current of lightning arrester |
| CN111257604A (en) * | 2020-04-09 | 2020-06-09 | 国家电网有限公司 | Upper section test wiring device for 500kV and above voltage level lightning arrester |
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