CN207502565U - 220kV and above more piece Zinc-Oxide Arrester integration test case - Google Patents
220kV and above more piece Zinc-Oxide Arrester integration test case Download PDFInfo
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- CN207502565U CN207502565U CN201721658452.4U CN201721658452U CN207502565U CN 207502565 U CN207502565 U CN 207502565U CN 201721658452 U CN201721658452 U CN 201721658452U CN 207502565 U CN207502565 U CN 207502565U
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- busbar
- cable
- metal
- arrester
- disconnecting link
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 238000012360 testing method Methods 0.000 title claims abstract description 34
- 229960001296 zinc oxide Drugs 0.000 title claims abstract description 29
- 239000011787 zinc oxide Substances 0.000 title claims abstract description 29
- 230000010354 integration Effects 0.000 title claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 39
- 229910052751 metal Inorganic materials 0.000 claims abstract description 39
- 238000002474 experimental method Methods 0.000 claims abstract description 17
- 238000009413 insulation Methods 0.000 claims abstract description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052802 copper Inorganic materials 0.000 claims abstract description 10
- 239000010949 copper Substances 0.000 claims abstract description 10
- 239000012212 insulator Substances 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 description 8
- 230000035945 sensitivity Effects 0.000 description 3
- 238000009736 wetting Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052770 Uranium Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000028659 discharge Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000009666 routine test Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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- Gas-Insulated Switchgears (AREA)
Abstract
The utility model is related to a kind of 220kV and above more piece Zinc-Oxide Arrester integration test casees.Need to ascend a height during the Zinc-Oxide Arrester test for mainly solving the problems, such as existing 220kv and above operation, more total current table needs to have a power failure.It is characterized in that：Described first insulation busbar in upper end（4）On pass through insulator（12）It is connected with metal busbar（13）, metal busbar（13）Metal copper bar is drawn with Zinc-Oxide Arrester end（5）It is connected, and metal busbar（13）It is upper to pass through cable A respectively（14）, cable B（15）, cable C（16）With second insulation busbar（4）It is connected, the third insulation busbar（4）On be fixed with work disconnecting link successively from left to right（1）, experiment disconnecting link（2）, grounding switch（3）.Power failure, charging test and detection are not only increased using the integration test case, replace the working efficiency of counter total current table, and greatly reduce the security risk in work and operating risk.
Description
Technical field
The utility model is related to power domain, especially a kind of 220kV and above more piece Zinc-Oxide Arrester
Integration test case.
Background technology
Zinc-Oxide Arrester（Abbreviation MOA）It is the capital equipment for protecting power system security stable operation, zinc oxide is taken shelter from the thunder
Device is equivalent to one 2 to 3 and saves the nonlinear resistance being connected in series with, and cardinal principle is exactly to utilize the good non-linear volt-ampere of zinc oxide
Characteristic plays the role of aerial drainage and cut-offfing, and when overvoltage, resistance drastically declines the energy of overvoltage of releasing and reaches protection
Effect, the electric current that arrester is flowed through in normal working voltage are minimum（Microampere or milliampere grade）.
In electric system normal operation, have to the routine test project of Zinc-Oxide Arrester：First, insulation measurement, with
It determines whether arrester makes moist, can also check whether internal fuse is intact for what there was a big fuse in inside；2nd, direct current is measured
Critical operation voltage U during 1mA1mA, it is main to check whether valve block insulation is good, determines whether its performance meets the requirements；
3rd, direct current 75%U is measured1mAWhen leakage current, it is therefore an objective to detection is long-term to allow whether operating current meets regulation, according to rule
It is fixed, 75%U1mAUnder leakage current values should be not more than 50 μ A, the only indices of MOA just can ensure that all in acceptability limit
Its is functional, so as to protect the safety of electrical equipment.
In Zinc oxide lightning arrester live-line test, the Zinc-Oxide Arrester electrification total current of 220kV and above
Table（Counter）Position is high, when to lightning arrester live-line test, placement ladder is needed to be connected to Zinc-Oxide Arrester end lead-out wire
On, staff ascends a height operation, very big risk is increased to staff, operating personnel is easily by electric shock, working efficiency
Low-risk is higher.In normal operation, total current table（Counter）It is long-term it is naked be exposed on the external, expose to wind and rain, often occur due to
Bad watered and wetting is sealed, indicator is caused to block, is failure to actuate after movement counter for lightning arrester corrosion.Furthermore arrester is being run
In, since total current table is exposed in air, easy watered and wetting and damage, and replace total current table（Counter）, it is necessary to stop
It could be replaced after electricity, influence to produce.
Invention content
For the operation that needs to ascend a height when the Zinc-Oxide Arrester of existing 220kv and above being overcome to test, more
The deficiency that total current table needs have a power failure, the utility model provide a kind of 220kV and above more piece Zinc-Oxide Arrester
Integration test case can be reduced greatly security risk during Zinc-Oxide Arrester test using the integration test case, reduce total current
The probability of table damage, greatly reduces the power failure carried out when replacing total current table.
The technical solution of the utility model is：A kind of 220kV and above more piece Zinc-Oxide Arrester synthesis are surveyed
Case is tried, fixed there are four insulation busbar and a grounded metal row successively from top to bottom in babinet including babinet, the upper end the
Metal busbar is connected with by insulator on one insulation busbar, metal busbar draws metal copper bar with Zinc-Oxide Arrester end
It is connected, and is connected respectively by cable A, cable B, cable C with second insulation busbar on metal busbar, the third insulation
It is fixed with work disconnecting link, experiment disconnecting link, grounding switch, and the disconnecting link that works, experiment disconnecting link, earthing on busbar successively from left to right
Lock is corresponding with cable A, cable B, cable C respectively；The work disconnecting link is connected for control counter with metal busbar, experiment
For metal busbar to be controlled to be connected with partial pressure arrester, grounding switch is used to that metal busbar and grounded metal to be controlled to arrange phase disconnecting link
Even.
The partial pressure wall thunder device upper end is connected with wire connection terminal, and lower end is connected with wire connection terminal.
When measuring lower section arrester, experiment disconnecting link is closed, concatenation divides arrester simultaneously at the lead of upper section arrester top
Through its ground connection, while in the pressurization of upper section arrester bottom end, the connection milliammeter at wire connection terminal, you can measure lower section arrester and let out
Leakage current value and critical operation voltage U during 1mA1mA。
When arrester is saved in measurement, a high-voltage connection is not torn open simultaneously in the upper section for measuring 220kV voltage class arresters
By wire ground, close experiment disconnecting link and introduce partial pressure arrester, milliammeter A is accessed at wire connection terminal and is grounded, kept away in upper section
Thunder device bottom end is pressurizeed, and connects other one piece of milliammeter B on DC booster, in measurement process it is upper save 1mA when it is critical dynamic
Make voltage first to start, the value that milliammeter A is subtracted with the value of milliammeter B is the leakage current values that save on arrester.
Do not have a power failure experiment when, close experiment disconnecting link, live testing instrument binding clip be clipped on wire connection terminal, so as to by band
Electrical testing instrument binding clip is linked into Zinc-Oxide Arrester end and draws on metal copper bar.
It when being detected to counter, closes grounding switch and is grounded metal copper bar, it is possible to the spirit of detection counter pointer
Sensitivity and quality.
Grounding switch is first closed, then work disconnecting link is pulled open, you can carries out charged for replacement total current table counter.
The utility model has the advantages that：Due to taking said program, the oxygen of the 220kV and above
Change zinc arrester integration test case and not only increase the work effect that counter watch test is replaced in power failure, charging test and detection
Rate, and the security risk in work and operating risk are greatly reduced, accomplish rational management and control to the risk in work, it is complete
Electric shock is avoided entirely, the livewire work carried out originally by 4 people, present 3 people can accomplish.Total current table（Counter）It puts
In proof cabinet, avoid over because it is exposed in air caused by watered and wetting damage, extend service life, saved and set
The standby fund replaced.Detect total current table（Counter）Pointer sensitivity and quality, can tentatively judge that arrester total current table refers to
It is because of the damage of total current table or because surge arrester failure on earth to show numerical exception.Past works as total current table（Counter）Because
When failure is damaged, it is necessary to which power failure could be replaced, and use the integration test case, so that it may reduce because replacing total current table
（Counter）And the unnecessary power failure carried out, power supply reliability is improved, changes work idea.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
1- work disconnecting link in figure；2- tests disconnecting link；3- grounding switchs；4- insulation busbars；5- metal copper bars；6- wire connection terminals
A；7- divides arrester；8- wire connection terminals B；9- counters；10- small casings；11- observation windows；12- insulators；13- metals are female
Row；14- cables A；15 cable B；16- cables C；17- grounded metals are arranged.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in Figure 1, a kind of 220kV and above more piece Zinc-Oxide Arrester integration test case, including babinet,
Chamber door is equipped in front of babinet, observation window 11 is provided on chamber door, observation window 11 is transparent glass, can observe situation in case.Babinet
Inside fixed there are four insulation busbar 4 and a grounded metal row 17 successively from top to bottom, the upper end first is insulated on busbar 4
Metal busbar 13 is connected with by insulator 12, metal busbar 13 draws metal copper bar 5 with Zinc-Oxide Arrester end and is connected, gold
Belong to copper bar 5 lower end connection small casing 10, it is exhausted by cable A14, cable B15, cable C16 and second respectively on metal busbar 13
Edge busbar 4 is connected, and is fixed with work disconnecting link 1, experiment disconnecting link 2, earthing on the third insulation busbar 4 successively from left to right
Lock 3, the disconnecting link other end be located at second insulation busbar on, and work disconnecting link 1, experiment disconnecting link 2, grounding switch 3 respectively with cable
A14, cable B15, cable C16 are corresponding, and such three disconnecting links can be by above three cable and 13 phase of metal busbar after closing
Even.
Metal busbar can be connected by the work disconnecting link 1 after closing with control counter 9, and experiment disconnecting link 2 can after closing
Partial pressure wall thunder device 7 is connected with metal busbar 13, meanwhile, 7 upper end of partial pressure wall thunder device is connected with wire connection terminal 6, lower end and wiring
Terminal 8 is connected.The partial pressure arrester 7 plays partial pressure when saving leakage current on power failure test measurement Zinc-Oxide Arrester,
And when saving leakage current on power failure test measurement Zinc-Oxide Arrester, can not tear arrester upper end lead open is grounded,
Wire connection terminal 8 accesses microampere meter and is grounded, and the milliampere tabular value accessed at DC booster is subtracted accesses milliampere in wire connection terminal 8
The value of table is the leakage current saved on arrester.When the grounding switch 3 closes, metal busbar 13 and grounded metal are arranged 17
It is connected, work disconnecting link 1 is pulled open at this time, charged for replacement counter 9 is can be carried out in this way, is also used for tentatively judging total current table
（Counter）There is fault-free, be also convenient for detecting instrument detection counter table quality.
It, can be with by the integration test terminal box for measuring the Leakage Current of Zinc-oxide Lightning Arresters of 220kV voltage class
A high-voltage connection is not torn open to measure.
When arrester the 1st, is saved under power failure test measurement, experiment disconnecting link 2 is closed, the concatenation point at the lead of upper section arrester top
Press arrester and through its ground connection, while in the pressurization of upper section arrester bottom end, the connection microampere meter at wire connection terminal 6, you can measure
Lower section leakage current of an arrester value and critical operation voltage U during 1mA1mA .Existed using the partial pressure arrester of rated voltage 5kV
Critical operation voltage U during 1mA1MA is 7.2kV, limits while be added in the voltage of bus-bar potential transformer upper end in this way,
It is unlikely to that the insulation of voltage transformer is caused to damage, but discharge treatment should be carried out to its top after being completed.
When arrester the 2nd, is saved in power failure test measurement, do not torn open in the upper section for measuring 220kV voltage class arresters primary
High-voltage connection and by wire ground, closes experiment disconnecting link 2 and introduces partial pressure arrester 7, milliammeter A is accessed simultaneously at wire connection terminal 8
Ground connection in the pressurization of upper section arrester bottom end, other one piece of milliammeter B is connected on DC booster, is above saved in measurement process
Critical operation voltage during 1mA first starts, with the value of milliammeter B subtract milliammeter A value be saved on arrester leakage electricity
Flow valuve can raise the critical operation voltage during 1mA of lower section arrester using introducing partial pressure arrester 7 herein, and upper section is kept away
When thunder device bottom end is pressurizeed, the critical operation voltage during 1mA of upper section first starts, and the critical action during 1mA of lower section arrester
Voltage can be delayed, and partial pressure arrester 7 is the small arrester tested once overtesting, and insulator foot will not be caused to disperse leakage current
Influence, using the small zinc oxide valve plate that rated voltage is 5kV, critical operation voltage in 1mA is 7.2kV.
3rd, do not have a power failure experiment i.e. live testing when, close test disconnecting link 2, live testing instrument binding clip is clipped in terminals
On son 6, live testing instrument binding clip is thus linked into Zinc-Oxide Arrester end and is drawn on metal copper bar 5, it is convenient
Charging test measures, and ensure that the safety of testing crew and improves work efficiency.
4th, to total current table（Counter）During detection, close grounding switch 3 and be grounded metal copper bar 5, it is possible to examine
Survey total current table（Counter）Pointer sensitivity and quality, it is preliminary judge arrester total current table indicate numerical exception be on earth because
For the damage of total current table or because of surge arrester failure, reduce because of total current table（Counter）Damage replace and carry out
Unnecessary power failure, improves power supply reliability.
5th, grounding switch 3 is first closed, then work disconnecting link 1 is pulled open, you can easily carries out charged for replacement total current meter
Number device.
Claims (2)
1. a kind of 220kV and above more piece Zinc-Oxide Arrester integration test case, including babinet, in babinet by up to
Under fixed successively there are four insulation busbars（4）It is arranged with a grounded metal（17）, it is characterised in that：Described first insulation in upper end
Busbar（4）On pass through insulator（12）It is connected with metal busbar（13）, metal busbar（13）It is drawn with Zinc-Oxide Arrester end
Metal copper bar（5）It is connected, and metal busbar（13）It is upper to pass through cable A respectively（14）, cable B（15）, cable C（16）With second
Insulate busbar（4）It is connected, the third insulation busbar（4）On be fixed with work disconnecting link successively from left to right（1）, experiment disconnecting link
（2）, grounding switch（3）, and the disconnecting link that works（1）, experiment disconnecting link（2）, grounding switch（3）Respectively with cable A（14）, cable B
（15）, cable C（16）It is corresponding；The work disconnecting link（1）For control counter（9）With metal busbar（13）It is connected, experiment
Disconnecting link（2）For controlling metal busbar（13）With dividing arrester（7）It is connected, grounding switch（3）For controlling metal busbar
（13）It is arranged with grounded metal（17）It is connected.
2. 220kV according to claim 1 and above more piece Zinc-Oxide Arrester integration test case, feature
It is：The partial pressure wall thunder device（7）Upper end and wire connection terminal（6）It is connected, lower end and wire connection terminal（8）It is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721658452.4U CN207502565U (en) | 2017-12-01 | 2017-12-01 | 220kV and above more piece Zinc-Oxide Arrester integration test case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721658452.4U CN207502565U (en) | 2017-12-01 | 2017-12-01 | 220kV and above more piece Zinc-Oxide Arrester integration test case |
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| Publication Number | Publication Date |
|---|---|
| CN207502565U true CN207502565U (en) | 2018-06-15 |
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| CN201721658452.4U Active CN207502565U (en) | 2017-12-01 | 2017-12-01 | 220kV and above more piece Zinc-Oxide Arrester integration test case |
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Cited By (1)
| 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 |
-
2017
- 2017-12-01 CN CN201721658452.4U patent/CN207502565U/en active Active
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 |
| 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 |
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