CN102944700A - Secondary wiring device for test of characteristics of a current transformer - Google Patents
Secondary wiring device for test of characteristics of a current transformer Download PDFInfo
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- CN102944700A CN102944700A CN2012104222308A CN201210422230A CN102944700A CN 102944700 A CN102944700 A CN 102944700A CN 2012104222308 A CN2012104222308 A CN 2012104222308A CN 201210422230 A CN201210422230 A CN 201210422230A CN 102944700 A CN102944700 A CN 102944700A
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- 238000012360 testing method Methods 0.000 title claims abstract description 71
- 238000004804 winding Methods 0.000 claims description 36
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
本发明涉及一种电流互感器特性测试二次接线装置，属于电力系统检测领域。本发明通过双刀双掷开关一端与接线端子连接，另一端可置于试验端子或短接端子，接线端子与电流互感器的次级绕组的引出的导线连接，短接端子接地，实现了不需要接线即可完成“接通测试”、和“短路接地”两种状态之间的切换，大大减少了接换线频率，简化了测试工作，同时由于双刀双掷开关只能是“接通测试”和“短路接地”两种状态之一，所以消除互感器二次开路的安全隐患。
The invention relates to a secondary wiring device for testing the characteristics of a current transformer, which belongs to the field of power system testing. In the present invention, one end of the double-pole, double-throw switch is connected to the terminal, and the other end can be placed on the test terminal or the short-circuit terminal. Wiring is required to complete the switching between the two states of "connection test" and "short-circuit grounding", which greatly reduces the frequency of connection and replacement and simplifies the test work. Test" and "short-circuit grounding" one of the two states, so the potential safety hazard of the secondary open circuit of the transformer is eliminated.
Description
Technical field
The present invention relates to a kind of current transformer characteristic test secondary wiring device, belong to the electric system detection field.
Background technology
The mode of connection of existing measuring current mutual inductor ratio, volt-ampere, polarity has very large drawback, has had a strong impact on our test efficiency and test mass.When carrying out the current transformer characteristic testing experiment, in tester when work, only be connected with tested one group utmost point winding of current transformer, and the tested device secondary winding can reach at most six groups in the real work.Tester will be tested successively to each group time utmost point winding.When to a certain armature winding energising wherein, other non-tested secondary winding must be used the shorting stub short circuit in addition.
For example: when test 1S, 2S, 3S, 4S, 5S, the necessary short circuit of each secondary winding of 6S, during test 2S, 1S, 3S, 4S, 5S, the necessary short circuit of each secondary winding of 6S.One group of secondary winding of every like this test is above operation repeatedly.It is unusually loaded down with trivial details to work together; At the construction field (site) repeatedly above-mentioned wiring increases intensity of workers, inefficiency; And, the secondary output line of test apparatus, because the too high as easy as rolling off a log damage of Reusability frequency and broken string, increased staff's labour intensity, reduced test efficiency, the wiring meeting causes that test is tired with wire terminal place repeatedly simultaneously, and injury, broken string etc. may cause Current Transformer Secondary to open by mistake the potential safety hazard on road.Meeting is so that the Current Transformer Secondary open circuit is very easy to the tested high-tension apparatus of damage like this.Bring potential safety hazard to safety in production.
Chinese invention patent " current transformer polarity tester of neutral point of transformer " (application number: CN200910172240.9) a kind of transformer neutral point current transformer tester, there are four connection terminals this tester inside, a pointer direct current electric current milliammeter A, a test button, outside have four test wires.Tester of the present invention can accurately check the polarity of transformer neutral point TA Secondary Winding, mistake access when avoiding wiring; Improve the transformer reliability of operation, ensured the stable operation of electric system.But should invent the also problem of unresolved frequent wiring.
Summary of the invention:
Deficiency for background technology, the present invention is connected with connection terminal by double-point double-throw switch one end, the other end can place testing terminal or short-circuited terminal, connection terminal is connected with the wire of drawing of the secondary winding of current transformer, short-circuited terminal ground connection, not needing to have realized wiring can finish " connecting test ", switching between " short circuit grounding " two states, greatly reduced and connect the thread-changing frequency, simplified test job, simultaneously because double-point double-throw switch can only be one of " connecting test " and " short circuit grounding " two states, so eliminate the potential safety hazard of mutual inductor second open circuit.
Technical scheme of the present invention is:
A kind of current transformer characteristic test secondary wiring device, comprise connection terminal, testing terminal, short-circuited terminal and double-point double-throw switch, double-point double-throw switch one end is connected with connection terminal, the other end can place testing terminal or short-circuited terminal, it is characterized in that: connection terminal is connected short-circuited terminal ground connection with the wire of drawing of the secondary winding of current transformer.Its beneficial effect is: termination has alleviated the labour intensity of test connection, improved test efficiency, reduced connecing the thread-changing frequency, thereby prolonged connection terminal and the life-span of test with line, evaded largely the potential safety hazard of bringing with the line breakdown because of test; Simultaneously can reduce connection times, avoid maloperation.
Aforesaid current transformer characteristic test secondary wiring device, it is characterized in that: described connection terminal, testing terminal, short-circuited terminal and double-point double-throw switch are respectively N pair, and wherein N is greater than 1.Its beneficial effect is: can test simultaneously N current transformer.
Aforesaid current transformer characteristic test secondary wiring device, it is characterized in that: described connection terminal, testing terminal, short-circuited terminal and double-point double-throw switch are respectively 6 pairs.Its beneficial effect is: can test simultaneously 6 current transformers, satisfy the requirement of most of current transformer tests.
Aforesaid current transformer characteristic test secondary wiring device is characterized in that: described connection terminal two ends shunt voltage table.Its beneficial effect is: can monitor at any time the tested winding voltage value in the process of the test.
Aforesaid current transformer characteristic test secondary wiring device is characterized in that: described connection terminal two ends series current table.Its beneficial effect is: can monitor at any time the tested winding electric flow valuve in the process of the test.
Description of drawings:
Fig. 1 simplex winding double-pole double-throw switch circuit schematic diagram;
Fig. 2 termination circuit theory diagrams;
Fig. 3 current transformer characteristic test secondary wiring device panel arranges sketch.
Embodiment
For realizing the function of the switching between " connecting test " and " short circuit grounding " two states.Be the double-point double-throw switch that each winding is equipped with, as shown in Figure 1: the intermediate terminal of switch is " connection terminal ", connects the wire S1, the S2 that draw of the secondary winding of current transformer.
When double-point double-throw switch placed " testing terminal " shelves, corresponding mutual inductor Secondary Winding was namely connected with tester, enters mutual inductor attribute testing test mode; " testing terminal " is connected with the measurement port of Testing Instrument for Volt-ampere Characteristic; When double-point double-throw switch places " short-circuited terminal " shelves, the Secondary Winding short circuit ground connection that then is access in.And can pass through the termination earthing of casing.Be in non-tested state, the danger of guaranteeing not produce the mutual inductor second open circuit.
Testing requirement for the current transformer of many groups Secondary Winding, double-point double-throw switch in conjunction with simplex winding, can be with N(N greater than 1) group single current mutual inductor characteristic test secondary wiring device as shown in Figure 1 carries out composite design, and Fig. 2 is 6 groups of situations that current transformer characteristics test secondary wiring device makes up.
By controlling the state of double-point double-throw switch K1-K6 corresponding to each secondary terminals, can select respectively " testing terminal " shelves and " short-circuited terminal " shelves, reach tested winding access tester, the purpose of non-tested winding short circuit ground connection.
As shown in Figure 3, current transformer characteristic test secondary wiring device panel arranges sketch.By changing on off state corresponding to each winding, realize the switching of each winding " input logical " and " short circuit is logical ", during " input is logical " state with corresponding winding access tester test port, during " short circuit is led to " state with corresponding winding short circuit ground connection.Also have " voltage table ", " reometer " connection terminal at the panel of termination, respectively in parallel with " instrument secondary input terminal ", connect, can by accessing corresponding instrument, monitor at any time the tested winding voltage current value in the process of the test.Experiment power supply with reometer, when unusual reading appears in voltage table, can immediately by the power switch deenergization on the panel, prevent from burning out tested winding in monitoring by the access of the power switch on termination panel tester.During work, the two ends of 6 Secondary Winding of current transformer are connected on respectively termination " 1S1-1S2 ", " 2S1-2S2 ", " 3S1-3S2 ", " 4S1-4S2 ", " 5S1-5S2 ", " on " 6S1-6S2 " connection terminal; the switch that tested winding is corresponding transfers to " input is logical ", and other switches are positioned at " short circuit is logical ".Access respectively voltage table, the reometer of corresponding range at voltage table, reometer terminal." instrument secondary output terminals " is connected to tester test connection port, the call through test power supply, and the operational testing instrument can carry out mutual inductor Secondary Winding attribute testing.After finishing current winding test, a switch that only needs work as front winding transfers to " short circuit is logical " shelves, and the switch of winding to be tried is transferred to " input is logical " grade, has namely finished the thread-changing process.When selection is made, used and to have born the two of large electric current and put switch, to satisfy the tester Secondary Winding up to the demand of 10A test current.But the secondary terminals binding post is selected the 16A insert type, is convenient to the connection with mutual inductor and tester.Panel adopts the location of epoxy resins insulation plate carrying all parts.Outer version adopts wear-resisting aluminium alloy steel plate attractive in appearance, and namely safety has increased again serviceable life.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210422230.8A CN102944700B (en) | 2012-10-30 | 2012-10-30 | A kind of current transformer characteristic test secondary wiring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210422230.8A CN102944700B (en) | 2012-10-30 | 2012-10-30 | A kind of current transformer characteristic test secondary wiring device |
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| CN102944700A true CN102944700A (en) | 2013-02-27 |
| CN102944700B CN102944700B (en) | 2015-11-18 |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103869168A (en) * | 2014-03-14 | 2014-06-18 | 云南电力试验研究院（集团）有限公司电力研究院 | Detecting and diagnosing method for secondary circuit of current transformer for electric power |
| CN104898016A (en) * | 2015-06-26 | 2015-09-09 | 国家电网公司 | Device for checking secondary circuit and polarity of current transformer |
| CN104931740A (en) * | 2015-06-23 | 2015-09-23 | 国网辽宁省电力有限公司检修分公司 | Rapid conversion device for test wiring of zero-flux CT secondary electronic module |
| CN105022016A (en) * | 2015-06-23 | 2015-11-04 | 国网辽宁省电力有限公司检修分公司 | Quick zero-flux current transformer test wiring device and use method |
| CN105510863A (en) * | 2016-01-20 | 2016-04-20 | 国网上海市电力公司 | Short-circuiting system and short-circuiting method of secondary terminal of mutual inductor |
| CN107367667A (en) * | 2017-07-28 | 2017-11-21 | 山西潞安环保能源开发股份有限公司王庄煤矿 | Threephase asynchronous winding head and the tail head tester |
| CN108572344A (en) * | 2017-03-10 | 2018-09-25 | 恩智浦美国有限公司 | Detect the device and method of Current Transformer Secondary side disconnecting |
| CN109001586A (en) * | 2016-01-18 | 2018-12-14 | 辛兴华 | A kind of current transformer polarity detection method |
| CN109375140A (en) * | 2018-11-30 | 2019-02-22 | 国网安徽省电力有限公司滁州供电公司 | A voltage transformer verification device |
| CN109765453A (en) * | 2019-03-29 | 2019-05-17 | 广东电网有限责任公司 | An automatic detection instrument for the wiring of the protection secondary circuit |
| CN110687482A (en) * | 2019-11-05 | 2020-01-14 | 国网山西省电力公司阳泉供电公司 | Visual secondary circuit comprehensive detector |
| CN111398869A (en) * | 2020-03-31 | 2020-07-10 | 贵州电网有限责任公司 | Mutual inductor handover test device and test method thereof |
| CN111398644A (en) * | 2020-03-31 | 2020-07-10 | 贵州电网有限责任公司 | Mutual inductor handover test switching device and switching method thereof |
| CN112798835A (en) * | 2020-12-28 | 2021-05-14 | 广东电网有限责任公司中山供电局 | Uninterrupted meter replacing device |
| CN113325338A (en) * | 2021-04-07 | 2021-08-31 | 国网浙江省电力有限公司金华供电公司 | Portable transformer substation CT secondary load test device |
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| CN203011948U (en) * | 2012-10-30 | 2013-06-19 | 武汉华源电力工程有限责任公司 | Current transformer characteristic test secondary connection device |
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2012
- 2012-10-30 CN CN201210422230.8A patent/CN102944700B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5396172A (en) * | 1993-07-20 | 1995-03-07 | Ontario Hydro | Transformer fault analyzer |
| CN2837857Y (en) * | 2005-10-27 | 2006-11-15 | 比亚迪股份有限公司 | Transformer winding tester |
| EP2416167A1 (en) * | 2009-02-28 | 2012-02-08 | Zhejiang Guangtian Transformer Co., Ltd | Improved turn-to-turn short circuit detection device of transformer via differential voltage |
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| CN102435906A (en) * | 2011-09-28 | 2012-05-02 | 西安供电局 | Ascending-free switch TA polarity tester |
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| CN203011948U (en) * | 2012-10-30 | 2013-06-19 | 武汉华源电力工程有限责任公司 | Current transformer characteristic test secondary connection device |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103869168A (en) * | 2014-03-14 | 2014-06-18 | 云南电力试验研究院（集团）有限公司电力研究院 | Detecting and diagnosing method for secondary circuit of current transformer for electric power |
| CN104931740B (en) * | 2015-06-23 | 2018-11-16 | 国网辽宁省电力有限公司检修分公司 | Quick switching device for Zero flux CT secondary electron module test wiring |
| CN104931740A (en) * | 2015-06-23 | 2015-09-23 | 国网辽宁省电力有限公司检修分公司 | Rapid conversion device for test wiring of zero-flux CT secondary electronic module |
| CN105022016A (en) * | 2015-06-23 | 2015-11-04 | 国网辽宁省电力有限公司检修分公司 | Quick zero-flux current transformer test wiring device and use method |
| CN104898016A (en) * | 2015-06-26 | 2015-09-09 | 国家电网公司 | Device for checking secondary circuit and polarity of current transformer |
| CN109001586B (en) * | 2016-01-18 | 2020-07-17 | 无锡市埃克威电气有限公司 | Polarity detection method for current transformer |
| CN109001586A (en) * | 2016-01-18 | 2018-12-14 | 辛兴华 | A kind of current transformer polarity detection method |
| CN105510863A (en) * | 2016-01-20 | 2016-04-20 | 国网上海市电力公司 | Short-circuiting system and short-circuiting method of secondary terminal of mutual inductor |
| CN108572344A (en) * | 2017-03-10 | 2018-09-25 | 恩智浦美国有限公司 | Detect the device and method of Current Transformer Secondary side disconnecting |
| CN107367667A (en) * | 2017-07-28 | 2017-11-21 | 山西潞安环保能源开发股份有限公司王庄煤矿 | Threephase asynchronous winding head and the tail head tester |
| CN107367667B (en) * | 2017-07-28 | 2023-04-25 | 山西潞安环保能源开发股份有限公司王庄煤矿 | Head-tail tester for winding of three-phase asynchronous motor |
| CN109375140A (en) * | 2018-11-30 | 2019-02-22 | 国网安徽省电力有限公司滁州供电公司 | A voltage transformer verification device |
| CN109765453A (en) * | 2019-03-29 | 2019-05-17 | 广东电网有限责任公司 | An automatic detection instrument for the wiring of the protection secondary circuit |
| CN110687482A (en) * | 2019-11-05 | 2020-01-14 | 国网山西省电力公司阳泉供电公司 | Visual secondary circuit comprehensive detector |
| CN111398869A (en) * | 2020-03-31 | 2020-07-10 | 贵州电网有限责任公司 | Mutual inductor handover test device and test method thereof |
| CN111398644A (en) * | 2020-03-31 | 2020-07-10 | 贵州电网有限责任公司 | Mutual inductor handover test switching device and switching method thereof |
| CN111398644B (en) * | 2020-03-31 | 2022-07-01 | 贵州电网有限责任公司 | Mutual inductor handover test switching device and switching method thereof |
| CN112798835A (en) * | 2020-12-28 | 2021-05-14 | 广东电网有限责任公司中山供电局 | Uninterrupted meter replacing device |
| CN113325338A (en) * | 2021-04-07 | 2021-08-31 | 国网浙江省电力有限公司金华供电公司 | Portable transformer substation CT secondary load test device |
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Effective date of registration: 20151203 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: WUHAN POWER SUPPLY COMPANY OF STATE GRID HUBEI ELECTRIC POWER Co. Patentee after: POWER TRANSMISSION AND TRANSFORMATION ENGINEERING BRANCH OF WUHAN HUAYUAN ELECTRIC POWER GROUP CO.,LTD. Address before: 430051 Hanyang Road, Hubei, Wuhan, No. 545 Patentee before: Wuhan Huayuan Electric Power Engineering Co.,Ltd. |
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Granted publication date: 20151118 Termination date: 20211030 |