CN105223407A - 500kV Zinc-Oxide Arrester non-dismantle high voltages fuse measures DC leakage method - Google Patents
500kV Zinc-Oxide Arrester non-dismantle high voltages fuse measures DC leakage method Download PDFInfo
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- CN105223407A CN105223407A CN201510579061.2A CN201510579061A CN105223407A CN 105223407 A CN105223407 A CN 105223407A CN 201510579061 A CN201510579061 A CN 201510579061A CN 105223407 A CN105223407 A CN 105223407A
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Abstract
The present invention relates to power safety technique field, particularly a kind of Zinc-Oxide Arrester non-dismantle high voltages fuse measures DC leakage method.This 500kV Zinc-Oxide Arrester non-dismantle high voltages fuse is measured DC leakage-current method and is comprised: 500kV Zinc-Oxide Arrester its comprise the first segment lightning arrester, second section lightning arrester and Section of three lightning arrester that are in series from top to bottom successively; Described first segment lightning arrester top connects high-pressure connection line, and described Section of three lightning arrester bottom is provided with insulator foot, and described Section of three lightning arrester bottom is connected with ground connection steelframe structure by counter.500kV Zinc-Oxide Arrester non-dismantle high voltages fuse provided by the invention measures DC leakage-current method, at utmost saves resource, effectively improves work efficiency, is very suitable for extensive popularization of homework.
Description
Technical field
The present invention relates to power safety technique field, particularly a kind of Zinc-Oxide Arrester non-dismantle high voltages fuse measures DC leakage method.
Background technology
During the leakage current of Zinc-Oxide Arrester when doing the leakage current insulated under 1mA direct current operation voltage and 75% this voltage, owing to the zinc paste high-voltage connection had a power failure must be removed, and carry out safe distance.500kV Zinc-Oxide Arrester is that three joints are serially connected, and have thicker high-voltage connection (big current when preventing switching overvoltage or thunderbolt by time and do not fuse, ensure the reliability of lightning arrester).
The joint number of the lightning arrester of 220kV and following current class is few, arrange lower, high-voltage connection diameter is little, lightweight, when having a power failure test, be convenient to tear head test open, and 500kV Zinc-Oxide Arrester due to joint number many, cloth sets high, and (voltage is high, safe distance is comparatively large) and high-voltage connection is thick especially, rear heavier-weight torn open by terminal block and lead-in wire, so the dismounting amount of its lead-in wire is just convenient unlike 220kV and following electric pressure lightning arrester, and necessary handy larger bucket arm vehicle, coordinated by two people and tear head open, , three heads of circuit three-phase, the overall sequential time pulled down must 2 hours, and resume work, connect head and also need the same time, no matter from resource, it efficiency is all a kind of waste, not convenient to what work and bring for solving the problem of removing difficulty.
Summary of the invention
(1) technical matters to be solved
The invention provides a kind of 500kV Zinc-Oxide Arrester non-dismantle high voltages fuse and measure DC leakage-current method, need to remove high-voltage connection to carry out measuring the work efficiency caused low to overcome prior art, the defects such as waste resource.
Summary of the invention
(2) technical scheme
The invention provides a kind of 500kV Zinc-Oxide Arrester non-dismantle high voltages fuse and measure DC leakage method, comprising:
Described 500kV Zinc-Oxide Arrester its comprise the first segment lightning arrester, second section lightning arrester and Section of three lightning arrester that are in series from top to bottom successively; Described first segment lightning arrester top connects high-pressure connection line, and described Section of three lightning arrester bottom is provided with insulator foot, and described Section of three lightning arrester bottom is connected with ground connection steelframe structure by counter;
Wherein, when measuring first segment lightning arrester, described high-pressure connection line ground connection; Add the bottom being pressed in first segment lightning arrester, and connect milliammeter, current value and the magnitude of voltage of first segment lightning arrester can be measured;
When measuring second section lightning arrester, the bottom artificial earthing of first segment lightning arrester is set, add the bottom being pressed in second section lightning arrester, and connect the first milliammeter, and the junction of described Section of three lightning arrester bottom and counter is disconnected, 5kV-7kV zinc oxide valve plate is adopted to be connected with Section of three bottom, and reliable ground after second milliammeter of connecting;
The numerical value that the numerical value of the first milliammeter deducts second milliampere of tabular value is the magnitude of voltage of second section lightning arrester;
When measuring Section of three lightning arrester, described high-pressure connection line ground connection; Add the bottom being pressed in second section lightning arrester, and connect milliammeter, current value and the magnitude of voltage of Section of three lightning arrester can be measured.
Preferably, 6kV zinc oxide valve plate is adopted to be connected with Section of three bottom.
Preferably, described insulator foot is more than 10000 megaohms.
(3) beneficial effect
The invention provides a kind of 500kV Zinc-Oxide Arrester non-dismantle high voltages fuse and measure DC leakage-current method, at utmost save resource, effectively improve work efficiency, be very suitable for extensive popularization of homework.
Accompanying drawing explanation
Fig. 1 is that the embodiment of the present invention measures first segment lightning arrester schematic diagram;
Fig. 2 is that the embodiment of the present invention measures second section lightning arrester schematic diagram;
Fig. 3 is that the embodiment of the present invention measures Section of three lightning arrester schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 the invention provides a kind of 500kV Zinc-Oxide Arrester non-dismantle high voltages fuse and measures DC leakage-current method, comprising:
Described 500kV Zinc-Oxide Arrester its comprise the first segment lightning arrester 1, second section lightning arrester 2 and Section of three lightning arrester 3 that are in series from top to bottom successively; Described first segment lightning arrester 1 top connects high-pressure connection line, and described Section of three lightning arrester 3 bottom is provided with insulator foot 4, and described Section of three lightning arrester 3 bottom is connected with ground connection steelframe structure 5 by counter; Wherein, described insulator foot 4 is more than 10000 megaohms.
As shown in Figure 1, when measuring first segment lightning arrester 1, described high-pressure connection line ground connection; Add the bottom being pressed in first segment lightning arrester 1, and connect milliammeter, current value and the magnitude of voltage of first segment lightning arrester 1 can be measured;
As shown in Figure 2, when measuring second section lightning arrester 2, the bottom artificial earthing of first segment lightning arrester 1 is set, add the bottom being pressed in second section lightning arrester 2, and connect the first milliammeter 7, and the junction of described Section of three lightning arrester 3 bottom and counter is disconnected, adopt 6kV zinc oxide valve plate 6 to be connected with Section of three lightning arrester 3 bottom, and reliable ground after second milliammeter 8 of connecting; The numerical value that the numerical value of the first milliammeter 7 deducts the second milliammeter 8 value is magnitude of voltage and the current value of second section lightning arrester 2.
During this is measured, Section of three lightning arrester 3 is adopted to connect after a 6kV zinc oxide valve plate, the molar behavior voltage of Section of three lightning arrester can be made to raise about 15kV, when pressurizeing in second section bottom, during the starting operation of second section lightning arrester, its operation voltage does not also make the operation voltage of Section of three lightning arrester start, but it has a small amount of leakage current process, and the high-tension current tabular value that we read testing tool deducts Section of three lower end numerical value of that milliampere of gauge outfit voltage when equaling 1mA of connecting is magnitude of voltage and the current value of second section lightning arrester.A this kind of method string 6kV zinc oxide valve plate, voltage when reason is the action of 6kV zinc oxide valve plate can not cause the impact of the dispersion leakage current of good insulation base, and zinc oxide valve plate is very few, can't play the effect of raising Section of three lightning arrestor movement voltage.
As shown in Figure 3, when measuring Section of three lightning arrester 3, described high-pressure connection line ground connection; Add the bottom being pressed in second section lightning arrester 2, and connect milliammeter, current value and the magnitude of voltage of Section of three lightning arrester 3 can be measured.
500kV Zinc-Oxide Arrester non-dismantle high voltages fuse provided by the invention measures DC leakage-current method, at utmost saves resource, effectively improves work efficiency, is very suitable for extensive popularization of homework.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and replacement, these improve and replace and also should be considered as protection scope of the present invention.
Claims (3)
1. 500kV Zinc-Oxide Arrester non-dismantle high voltages fuse measures a DC leakage method, it is characterized in that, comprising:
Described 500kV Zinc-Oxide Arrester its comprise the first segment lightning arrester, second section lightning arrester and Section of three lightning arrester that are in series from top to bottom successively; Described first segment lightning arrester top connects high-pressure connection line, and described Section of three lightning arrester bottom is provided with insulator foot, and described Section of three lightning arrester bottom is connected with ground connection steelframe structure by counter;
Wherein, when measuring first segment lightning arrester, described high-pressure connection line ground connection; Add the bottom being pressed in first segment lightning arrester, and connect milliammeter, current value and the magnitude of voltage of first segment lightning arrester can be measured;
When measuring second section lightning arrester, the bottom artificial earthing of first segment lightning arrester is set, add the bottom being pressed in second section lightning arrester, and connect the first milliammeter, and the junction of described Section of three lightning arrester bottom and counter is disconnected, 5kV-7kV zinc oxide valve plate is adopted to be connected with Section of three bottom, and reliable ground after second milliammeter of connecting;
The numerical value that the numerical value of the first milliammeter deducts second milliampere of tabular value is the magnitude of voltage of second section lightning arrester;
When measuring Section of three lightning arrester, described high-pressure connection line ground connection; Add the bottom being pressed in second section lightning arrester, and connect milliammeter, current value and the magnitude of voltage of Section of three lightning arrester can be measured.
2. 500kV Zinc-Oxide Arrester non-dismantle high voltages fuse as claimed in claim 1 measures DC leakage method, it is characterized in that, adopts 6kV zinc oxide valve plate to be connected with Section of three lightning arrester bottom.
3. 500kV Zinc-Oxide Arrester non-dismantle high voltages fuse as claimed in claim 1 is measured direct current and is let out method for electrically, and it is characterized in that, described insulator foot is more than 10000 megaohms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510579061.2A CN105223407A (en) | 2015-09-11 | 2015-09-11 | 500kV Zinc-Oxide Arrester non-dismantle high voltages fuse measures DC leakage method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510579061.2A CN105223407A (en) | 2015-09-11 | 2015-09-11 | 500kV Zinc-Oxide Arrester non-dismantle high voltages fuse measures DC leakage method |
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| CN105223407A true CN105223407A (en) | 2016-01-06 |
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| CN201510579061.2A Pending CN105223407A (en) | 2015-09-11 | 2015-09-11 | 500kV Zinc-Oxide Arrester non-dismantle high voltages fuse measures DC leakage method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107894519A (en) * | 2017-12-01 | 2018-04-10 | 国网黑龙江省电力有限公司大庆供电公司 | 220kV and above more piece Zinc-Oxide Arrester integration test case |
| CN110108923A (en) * | 2019-05-29 | 2019-08-09 | 国网青海省电力公司检修公司 | The test method of high-voltage connection measurement Zinc-Oxide Arrester direct current leakage is not removed |
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| CN101246196A (en) * | 2008-03-24 | 2008-08-20 | 江苏省电力公司南京供电公司 | Double-segment zinc oxide lightning arrester insulation status testing method |
| CN101592701A (en) * | 2009-07-03 | 2009-12-02 | 江苏省电力公司常州供电公司 | Direct-current voltage withstanding test method for multilevel zinc oxide lightning arresters |
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| CN102023249A (en) * | 2009-09-17 | 2011-04-20 | 上海市电力公司超高压输变电公司 | Method for performing preventive test without detaching high-voltage lead of 220-kV zinc oxide arrestor |
| CN102193040A (en) * | 2010-12-17 | 2011-09-21 | 青海电力科学试验研究院 | Method for performing insulation preventive test on zinc oxide lightning arrester without dismantling lead wire |
| CN102221652A (en) * | 2011-03-23 | 2011-10-19 | 辽宁省电力有限公司鞍山超高压分公司 | Method and device for testing 500kV metal oxide arrester |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101246196A (en) * | 2008-03-24 | 2008-08-20 | 江苏省电力公司南京供电公司 | Double-segment zinc oxide lightning arrester insulation status testing method |
| CN101592701A (en) * | 2009-07-03 | 2009-12-02 | 江苏省电力公司常州供电公司 | Direct-current voltage withstanding test method for multilevel zinc oxide lightning arresters |
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| CN102221652A (en) * | 2011-03-23 | 2011-10-19 | 辽宁省电力有限公司鞍山超高压分公司 | Method and device for testing 500kV metal oxide arrester |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107894519A (en) * | 2017-12-01 | 2018-04-10 | 国网黑龙江省电力有限公司大庆供电公司 | 220kV and above more piece Zinc-Oxide Arrester integration test case |
| CN107894519B (en) * | 2017-12-01 | 2023-08-04 | 国网黑龙江省电力有限公司大庆供电公司 | 220kV and above voltage class multisection zinc oxide arrester comprehensive test box |
| CN110108923A (en) * | 2019-05-29 | 2019-08-09 | 国网青海省电力公司检修公司 | The test method of high-voltage connection measurement Zinc-Oxide Arrester direct current leakage is not removed |
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