CN101975913A - Equipment and method for testing two or more sections of zinc oxide arresters without detaching leads - Google Patents
Equipment and method for testing two or more sections of zinc oxide arresters without detaching leads Download PDFInfo
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- CN101975913A CN101975913A CN 201010297373 CN201010297373A CN101975913A CN 101975913 A CN101975913 A CN 101975913A CN 201010297373 CN201010297373 CN 201010297373 CN 201010297373 A CN201010297373 A CN 201010297373A CN 101975913 A CN101975913 A CN 101975913A
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Abstract
The invention discloses equipment and a method for testing two or more sections of zinc oxide arresters without detaching leads. The invention is characterized in that: the top end of an upper-section arrester is directly connected to an earth wire; a first microampere meter and a direct current generator are connected in series between the bottom of the upper-section arrester and the earth wire; a second microampere meter is connected between the connecting part of a lower-section arrester and an arrester base and the earth wire; and a discharge counter is connected in series between the connecting part of the lower-section arrester and the arrester base and the earth wire. In the process of testing the lower-section arrester, primary leads are not needed to be detached; the discharge counter is disconnected; the second microampere meter is connected on the connecting part of the lower-section arrester and the arrester base and is directly earthed to perform an arrester leakage current test; and the direct current generator is pressurized and numerical values of the first microampere meter and the second microampere meter are respectively read so as to obtain a tested value of the arrester. In the process of testing the leakage current of the lower-section arrester, the primary leads are not needed to be detached and the method is convenient and rapid to implement.
Description
Technical field
The present invention relates to be applied in joint of two in the electric substation and above Zinc-Oxide Arrester rig for testing.
Background technology
During the routine power failure routine test (preventive trial) of Zinc-Oxide Arrester, need to remove the lead-in wire of high-pressure side.General lightning arrester high-voltage connection overhead all has more than 3～4m, when carrying out electrical test, using high-altitude operation vehicle to carry out the lightning arrester high-voltage connection disconnects, perhaps the staff uses insulation side's ladder to carry out ascend operation, but transportation and carrying insulation side ladder need human and material resources and time, not only time-consuming but also have a potential safety hazard, have a power failure at interval when carrying out the lightning arrester test at one in addition, just can't use insulation side's ladder or high-altitude operation vehicle.Along with the continuous development of electrical network, newly-built transformer station constantly puts into operation, and the lightning arrester of operation is more and more, need join to check and accept and the equipment of preventive trial rolls up, and work efficiency urgency is waited to improve.
With two joints is example, and the test method of present conventional lightning arrester is: with ground connection between the first segment and the second joint lightning arrester, from the upper end pressurization, the numerical value of reading first microampere meter 1 is the test value of first segment lightning arrester, as shown in Figure 1 during the test first segment; When measuring second joint, the upper end lead-in wire of first segment is removed, the discharge counter 3 that second joint is connected with base is not removed, utilize discharge counter 3 to do the earthy of the second joint lightning arrester, from making alive between the first segment and the second joint lightning arrester, read first microampere meter 1, be the second joint lightning arrester test value, as Fig. 2.This kind test method is being removed the very big potential safety hazard of existence on this link of lead-in wire, there is work high above the ground in personnel, securing band can't be beaten, and lightning arrester can not lean on ladder again, and removing lead-in wire in addition also is a kind of injury to equipment, in case screw does not tighten, equipment heating will occur, be forced to have a power failure and handle, when removing lead-in wire, also have the danger of induced electricity injury simultaneously, and in removing lead-in wire and being connected the lead-in wire process, relatively lose time.Waste of manpower, material resources and financial resources.
Summary of the invention
The present invention is for avoiding above-mentioned existing in prior technology weak point, a kind of two joints and above Zinc-Oxide Arrester not disconnecting lead rig for testing and test method are provided, in the hope of when testing two joints and above lightning arrester, do not need to remove joint lightning arrester lead-in wire and just can measure down the concrete parameter of joint lightning arrester, avoid on-the-spot and use large-scale ascend a height equipment and personnel because remove the danger that fall in the high-altitude and induced electricity injures that goes between and cause.
Technical solution problem of the present invention adopts following technical scheme.
The present invention two joint and the not disconnecting lead rigs for testing of above Zinc-Oxide Arrester, its design feature are directly to insert ground wire on the top of last joint lightning arrester, are connected in series first microampere meter and a dc generator between the last bottom of saving lightning arrester and ground wire; Between the junction of saving lightning arrester and lightning arrester base down and ground wire, be connected second microampere meter; Between the junction of saving lightning arrester and lightning arrester base down and ground wire, be connected in series discharge counter.
The present invention's two joints and above Zinc-Oxide Arrester be the test method of disconnecting lead rig for testing not, it is characterized in that:
Test for last joint lightning arrester is, first microampere meter and dc generator series connection are inserted between the bottom and ground wire of going up the joint lightning arrester, top ground connection with last joint lightning arrester, opening discharge counter, to make discharge counter be open circuit, pressurize with dc generator, the reading of reading first microampere meter is the test value of joint leakage current of an arrester;
For the test that saves lightning arrester down be, keep once lead-in wire not remove, first microampere meter and dc generator series connection are inserted between the bottom and ground wire of going up the joint lightning arrester, top ground connection with last joint lightning arrester, be connected in series second microampere meter at last joint bottom the lightning arrester with between the ground wire, opening discharge counter, to make discharge counter be open circuit, pressurize with dc generator, read the numerical value of first microampere meter and second microampere meter respectively, the reading of first microampere meter is last joint lightning arrester and joint leakage current of an arrester sum down, and the reading of second microampere meter is the leakage current testing value of joint lightning arrester down.
Among the present invention when measuring the second joint lightning arrester, do not need the once lead-in wire of first segment lightning arrester is removed, directly add voltage with dc generator, when under measuring, saving lightning arrester, discharge counter is opened a way, prevent to form from here ground connection, can directly measure down the parameter of the required measurement of joint lightning arrester.Compared with the prior art, beneficial effect of the present invention is embodied in:
The present invention is that use under the microampere meter series connection access saved lightning arrester and lightning arrester base junction more in process of the test, open being connected between discharge counter and the following joint lightning arrester again, directly between saving up and down, add voltage with dc generator, the reading of reading second microampere meter 2 gets final product, do not need to ascend a height again last joint lead-in wire is removed, avoided carrying the burden of large-scale contour Work tool, the danger of also having avoided workmen's induction of electric shock and high-altitude to fall, having reduced equipment simultaneously may because of what disconnect the damage that causes and heating back and forth, save test period, improved test efficiency.
Description of drawings
Fig. 1, Fig. 2 are existing test method wiring schematic diagram.
Fig. 3, Fig. 4 are wiring schematic diagram of the present invention.
Number in the figure: 1 is first microampere meter, and 2 is discharge counter, and 3 is second microampere meter.
Embodiment
Referring to Fig. 3, when in test, saving lightning arrester, expansion link with a band ground wire, directly hang over the joint lightning arrester the top grading ring or once the lead-in wire on, form lightning arrester top ground connection, open down being connected of joint lightning arrester and discharge counter 3, prevent from down to connect lightning arrester and produce leakage current by discharge counter 3, cause data error, after then dc generator and first microampere meter 1 being connected in series, directly inserting and go up between joint lightning arrester and the following joint lightning arrester, pressurize with dc generator, reading the reading of first microampere meter 1, is exactly the test value of going up the joint leakage current of an arrester.
Referring to Fig. 4, when under test, saving lightning arrester, expansion link with a band ground wire, directly hang over the grading ring on joint lightning arrester top or once on the lead-in wire, form lightning arrester top ground connection, open down of the connection of joint lightning arrester in discharge counter 3, produce leakage current by discharge counter 3 when preventing to connect lightning arrester under the test, cause data error, again under save lightning arrester and insert second microampere meter 2 in base position series connection, then with second microampere meter, 2 ground connection, after then dc generator and first microampere meter 1 being connected in series, directly insert last joint lightning arrester with time save take shelter from the thunder between, pressurize with dc generator, read the reading of first microampere meter 1 and second microampere meter 2, the reading of second microampere meter 2 is exactly the value that following joint lightning arrester need be measured.This moment, the reading of first microampere meter 1 was to go up joint lightning arrester and following joint leakage current of an arrester sum, insert first microampere meter 1 at this, be a reference as second microampere meter, 2 readings in this kind test method, a data foundation of joint lightning arrester and following joint lightning arrester trial value in the comparison.
The scope of application: be applicable to the test that 110 kilovolts in transformer station and above more piece leakage current of an arrester are tested.Test principle: when under test, saving lightning arrester, pressurize with dc generator.When the current indication that is pressurized to second microampere meter 2 is 1mA, read the voltage value of dc generator, pressurize with this voltage of 75% of reading numerical value with dc generator again, read the numerical value of second microampere meter 2 again, this moment, the numerical value of second microampere meter 2 was exactly the leakage current values of this time joint lightning arrester, as surpassing 50 μ A, then this time joint lightning arrester is defective, otherwise is qualified.
Claims (2)
1. two joint and the not disconnecting lead rigs for testing of above Zinc-Oxide Arrester is characterized in that:
Ground wire is directly inserted on top at last joint lightning arrester, is connected in series first microampere meter (1) and a dc generator between the last bottom of saving lightning arrester and ground wire;
Between the junction of saving lightning arrester and lightning arrester base down and ground wire, be connected second microampere meter (2);
Between the junction of saving lightning arrester and lightning arrester base down and ground wire, be connected in series discharge counter (3).
2. described two joints of a claim 1 and the above Zinc-Oxide Arrester test method of disconnecting lead rig for testing not is characterized in that:
Test for last joint lightning arrester is, first microampere meter (1) and dc generator series connection are inserted between the bottom and ground wire of going up the joint lightning arrester, top ground connection with last joint lightning arrester, opening discharge counter (3), to make discharge counter be open circuit, pressurize with dc generator, the reading of reading first microampere meter (1) is the test value of joint leakage current of an arrester;
For the test that saves lightning arrester down be, keep once lead-in wire not remove, first microampere meter (1) and dc generator series connection are inserted between the bottom and ground wire of going up the joint lightning arrester, top ground connection with last joint lightning arrester, be connected in series second microampere meter (2) at last joint bottom the lightning arrester with between the ground wire, opening discharge counter (3), to make discharge counter be open circuit, pressurize with dc generator, read the numerical value of first microampere meter (1) and second microampere meter (2) respectively, the reading of first microampere meter (1) is last joint lightning arrester and joint leakage current of an arrester sum down, and the reading of second microampere meter (2) is the leakage current testing value of joint lightning arrester down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010297373 CN101975913A (en) | 2010-09-26 | 2010-09-26 | Equipment and method for testing two or more sections of zinc oxide arresters without detaching leads |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010297373 CN101975913A (en) | 2010-09-26 | 2010-09-26 | Equipment and method for testing two or more sections of zinc oxide arresters without detaching leads |
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| CN101975913A true CN101975913A (en) | 2011-02-16 |
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| CN 201010297373 Pending CN101975913A (en) | 2010-09-26 | 2010-09-26 | Equipment and method for testing two or more sections of zinc oxide arresters without detaching leads |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102692581A (en) * | 2012-06-19 | 2012-09-26 | 国电大渡河检修安装有限公司 | Current leakage test method for lightning arrestor |
| CN103293409A (en) * | 2013-04-22 | 2013-09-11 | 国家电网公司 | Lightning conductor direct current test method and test platform based on voltage compensation |
| CN104049161A (en) * | 2014-05-20 | 2014-09-17 | 国家电网公司 | Testing connecting structure and testing method for substation field lightning arrester without demounting primary high-voltage lead |
| CN105223407A (en) * | 2015-09-11 | 2016-01-06 | 国家电网公司 | 500kV Zinc-Oxide Arrester non-dismantle high voltages fuse measures DC leakage method |
| CN107727974A (en) * | 2017-11-09 | 2018-02-23 | 广西电网有限责任公司钦州供电局 | Test of lightning arrester device and method based on C-V characteristic skew |
| 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 |
| CN111856114A (en) * | 2020-06-24 | 2020-10-30 | 国网山东省电力公司淄博供电公司 | Lightning arrester leakage current testing system and method for eliminating parasitic parameter influence |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2010
- 2010-09-26 CN CN 201010297373 patent/CN101975913A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 《电气技术》 20100215 徐近龙 氧化锌避雷器现场直流试验的有关问题 95-97 1-2 , 第2期 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102692581A (en) * | 2012-06-19 | 2012-09-26 | 国电大渡河检修安装有限公司 | Current leakage test method for lightning arrestor |
| CN103293409A (en) * | 2013-04-22 | 2013-09-11 | 国家电网公司 | Lightning conductor direct current test method and test platform based on voltage compensation |
| CN103293409B (en) * | 2013-04-22 | 2016-03-02 | 国家电网公司 | Based on lightning arrester DC experiment method and the test platform of voltage compensation |
| CN104049161A (en) * | 2014-05-20 | 2014-09-17 | 国家电网公司 | Testing connecting structure and testing method for substation field lightning arrester without demounting primary high-voltage lead |
| CN105223407A (en) * | 2015-09-11 | 2016-01-06 | 国家电网公司 | 500kV Zinc-Oxide Arrester non-dismantle high voltages fuse measures DC leakage method |
| CN107727974A (en) * | 2017-11-09 | 2018-02-23 | 广西电网有限责任公司钦州供电局 | Test of lightning arrester device and method based on C-V characteristic skew |
| CN107727974B (en) * | 2017-11-09 | 2023-12-29 | 广西电网有限责任公司钦州供电局 | Lightning arrester test device and method based on volt-ampere characteristic deviation |
| 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 |
| CN111856114A (en) * | 2020-06-24 | 2020-10-30 | 国网山东省电力公司淄博供电公司 | Lightning arrester leakage current testing system and method for eliminating parasitic parameter influence |
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Application publication date: 20110216 |