CN102590627B - Test instrument for high-voltage power transmission line - Google Patents
Test instrument for high-voltage power transmission line Download PDFInfo
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- CN102590627B CN102590627B CN 201210095421 CN201210095421A CN102590627B CN 102590627 B CN102590627 B CN 102590627B CN 201210095421 CN201210095421 CN 201210095421 CN 201210095421 A CN201210095421 A CN 201210095421A CN 102590627 B CN102590627 B CN 102590627B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 43
- 238000012360 testing method Methods 0.000 title claims abstract description 22
- 238000005259 measurement Methods 0.000 claims abstract description 18
- 238000009413 insulation Methods 0.000 claims description 5
- 230000006698 induction Effects 0.000 abstract description 3
- 238000002847 impedance measurement Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
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Abstract
The invention discloses a test instrument for high-voltage power transmission line. The test instrument comprises a measurement table, voltage transformers PT1, PT2 and PT3 and current transformers CT1, CT2 and CT3, wherein the voltage transformers PT2, PT2 and PT3 are used for transmitting voltage induction signals of three phase power transmission lines on the high-voltage power transmission line to the measurement table; the current transformers CT1, CT2 and CT3 are used for transmitting current induction signals of three phase power transmission lines on the high-voltage power transmission line to the measurement table; a contactor KM3 is connected on three phase access nodes of the voltage transformers PT1, PT2 and PT3; a contactor KM2 is connected between the contactor KM3 and each access node in series; and the current transformers CT1, CT2 and CT3 are connected with the ground by a contactor KM1. The aim of finishing a power frequency parameter test without changing wire connection is achieved.
Description
Technical field
The present invention relates to the measurement instrument field, particularly, relate to a kind of tester for ultra-high-tension power transmission line.
Background technology
At present, along with the high speed development of electrical network, same tower double back transmission line is more and more, and the Gao Shihui of the induced voltage during transmission line power frequency parameter test on the circuit reaches volts up to ten thousand, and is very large on the accuracy impact of line parameter circuit value test.In order to measure a power transmission line power frequency parameter, and make contiguous line outage, can give and produce and life bring impact.The test event that the while transmission line power frequency parameter test relates to mainly comprises direct current resistance m easurem ent, positive sequence impedance measurement, positive sequence admittance measurement, zero sequence impedance measurement and zero sequence admittance measurement.The wiring of each test event is different, needs the manual wiring that changes, and has both reduced testing efficiency, and the induced voltage of volts up to ten thousand threatens tester's handling safety simultaneously.
Summary of the invention
The object of the invention is to, for the problems referred to above, propose a kind of tester for ultra-high-tension power transmission line, to realize the to change advantage that wiring just can be finished whole transmission line power frequency parameter test.
For achieving the above object, the technical solution used in the present invention is:
A kind of tester for ultra-high-tension power transmission line, comprise meter, voltage transformer pt 1, PT2, PT3, summation current transformer CT1, CT2, CT3, described voltage transformer pt 1, PT2, PT3 is transferred to meter with the voltage induced signal of 3 phase power transmission lines on the high voltage transmission line, described Current Transmit 1, CT2, CT3 is transferred to meter with the current sensing signal of 3 phase power transmission lines on the high voltage transmission line, described voltage transformer pt 1, PT2, connecting contactor KM3 on the 3 phase access nodes of PT3, series contactor KM2 between described contactor KM3 and access node, described Current Transmit 1, CT2, CT3 is connected with ground by contactor KM1.
Further, on the described tester control panel insulation or direct current resistance m easurem ent button, positive sequence impedance or admittance measurement button and zero sequence impedance or admittance measurement button are set, and the pilot lamp corresponding with each button is set, with the display apparatus test project.
Technical scheme of the present invention is connected to the test signal of tester output a bit by KM3.The automatic switchover of the mode of connection when realizing direct current resistance m easurem ent, positive sequence impedance measurements, positive sequence admittance measurement, zero sequence impedance measurement and zero sequence admittance measurement by being configured in switch on the panel and action button.Reach and to change the purpose that wiring just can be finished whole transmission line power frequency parameter test.
Other features and advantages of the present invention will be set forth in the following description, and, partly from instructions, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the instructions of writing, claims and accompanying drawing.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Accompanying drawing is used to provide a further understanding of the present invention, and consists of the part of instructions, is used for together with embodiments of the present invention explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the electrical schematic diagram of the described tester for ultra-high-tension power transmission line of the embodiment of the invention;
Fig. 2 is the synoptic diagram of the guidance panel of the described tester for ultra-high-tension power transmission line of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, is not intended to limit the present invention.
As shown in Figure 1, the tester that is used for ultra-high-tension power transmission line, comprise meter, voltage transformer pt 1, PT2, PT3, summation current transformer CT1, CT2, CT3, voltage transformer pt 1, PT2, PT3 is transferred to meter with the voltage induced signal of 3 phase power transmission lines on the high voltage transmission line, Current Transmit 1, CT2, CT3 is transferred to meter with the current sensing signal of 3 phase power transmission lines on the high voltage transmission line, voltage transformer pt 1, PT2, connecting contactor KM3 on the 3 phase access nodes of PT3, series contactor KM2 between contactor KM3 and access node, Current Transmit 1, CT2, CT3 is connected with ground by contactor KM1.
Voltage transformer pt 1, PT2, PT3 are connected on the three phase transmission line A of high voltage transmission line, and B between C and the ground, directly measures the induced voltage between test line downlead and the ground by voltage, current combined meter UI3; Current Transmit 1, CT2, CT3 are connected on the three phase transmission line A of high voltage transmission line, and B is on the C, by the induction current between voltage, the direct measuring circuit downlead of current combined meter UI3 and the ground.The inlet wire of contactor KM1 contact is connected to the A of the three phase transmission line of tested high voltage transmission line, B, the lower lead end of C, the outlet ground connection of contactor KM1.The inlet wire of contactor KM2 contact is connected to the A of the three phase transmission line of tested high voltage transmission line simultaneously, B, and the lower lead end of C, leading-out terminal are connected to the output terminal a of transmission line power frequency parameter test tester, b, c.The inlet wire of contactor KM3 contact is connected to the output terminal a of tester, b, c, leading-out terminal three-phase short circuit.
As shown in Figure 2, on the tester control panel insulation or direct current resistance m easurem ent button, positive sequence impedance or admittance measurement button and zero sequence impedance or admittance measurement button are set, and the pilot lamp corresponding with each button is set, with the display apparatus test project.A on the panel, B, the C jack connects the A of the three phase transmission line of high voltage transmission line, B, on the lower lead-in wire of C, a, b, c jack are parameter testing output.The G jack is earth terminal.The insulation that arranges/direct current resistance m easurem ent button and pilot lamp pressed when insulation resistance and direct current resistance m easurem ent, and when pressing this button, the pilot lamp that is arranged at its top is bright, indicates current test event; The positive sequence impedance that arranges/admittance measurement button and pilot lamp pressed when positive sequence impedance measurement and positive sequence admittance measurement, and when pressing this button, the pilot lamp that is arranged at its top is bright, indicates current test event; The zero sequence impedance that arranges/admittance measurement button and pilot lamp pressed when zero sequence impedance measurement and zero sequence admittance measurement, and when pressing this button, the pilot lamp that is arranged at its top is bright, indicates current test event; The circuit three-phase ground switch that arranges has and closes and a minute two states, when switching to when closing state, makes the circuit downlead by the KM1 ground connection of Fig. 1, when switching to minute state, and circuit downlead and ground disconnection.
It should be noted that at last: the above only is the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment the present invention is had been described in detail, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. tester that is used for ultra-high-tension power transmission line, it is characterized in that, comprise meter, voltage transformer pt 1, PT2, PT3, summation current transformer CT1, CT2, CT3, described voltage transformer pt 1, PT2, PT3 is transferred to meter with the voltage induced signal of 3 phase power transmission lines on the high voltage transmission line, described Current Transmit 1, CT2, CT3 is transferred to meter with the current sensing signal of 3 phase power transmission lines on the high voltage transmission line, described voltage transformer pt 1, PT2, connecting contactor KM3 on the 3 phase access nodes of PT3, series contactor KM2 between described contactor KM3 and access node, described Current Transmit 1, CT2, CT3 is connected with ground by contactor KM1;
On the described tester control panel insulation or direct current resistance m easurem ent button, positive sequence impedance or admittance measurement button and zero sequence impedance or admittance measurement button are set, and the setting pilot lamp corresponding with each button, with the display apparatus test project, and circuit three-phase ground switch is set, this circuit three-phase ground switch has and closes and a minute two states, when switching to when closing state, make the circuit downlead by above-mentioned contactor KM1 ground connection, when switching to minute state, the circuit downlead disconnects with ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210095421 CN102590627B (en) | 2012-04-01 | 2012-04-01 | Test instrument for high-voltage power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210095421 CN102590627B (en) | 2012-04-01 | 2012-04-01 | Test instrument for high-voltage power transmission line |
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| Publication Number | Publication Date |
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| CN102590627A CN102590627A (en) | 2012-07-18 |
| CN102590627B true CN102590627B (en) | 2013-10-23 |
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| CN 201210095421 Active CN102590627B (en) | 2012-04-01 | 2012-04-01 | Test instrument for high-voltage power transmission line |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616544A (en) * | 2013-11-23 | 2014-03-05 | 国家电网公司 | Intelligent control device for measurement of positive-sequence parameter and zero-sequence parameter of high-tension power transmission line |
| CN104698278B (en) * | 2015-02-25 | 2018-03-09 | 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 | A kind of alternating current circuit alternating-current lightning arrestor electrification detection system and method |
| CN105699707B (en) * | 2015-03-27 | 2018-08-17 | 国网山东省电力公司青岛供电公司 | A method of measuring line impedance and induction reactance resistance |
| CN105717361B (en) * | 2015-03-27 | 2018-06-12 | 国网山东省电力公司青岛供电公司 | A kind of method of capacitive reactance and capacitance to earth between measurement line |
| CN109116116A (en) * | 2018-07-16 | 2019-01-01 | 国网重庆市电力公司电力科学研究院 | A kind of wire and cable commutation device |
| CN109975613B (en) * | 2019-03-27 | 2021-08-20 | 国网山东省电力公司青岛供电公司 | Automatic switching circuit and switching method for passive measurement test wiring of overhead line |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2720450Y (en) * | 2004-08-27 | 2005-08-24 | 江苏省电力公司南京供电公司 | High-voltage transmission line parameter detector |
| CN201327509Y (en) * | 2008-12-19 | 2009-10-14 | 河南电力试验研究院 | High-voltage transmission line parameter measuring device and system thereof |
| CN101699301A (en) * | 2009-10-29 | 2010-04-28 | 江苏省电力试验研究院有限公司 | Method for measuring line parameter through induced electricity |
| CN201965178U (en) * | 2010-12-29 | 2011-09-07 | 长沙金艺电子科技有限公司 | Parameter tester for pilot frequency line |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202600050U (en) * | 2012-04-01 | 2012-12-12 | 甘肃省电力公司电力科学研究院 | Tester for high tension transmission line |
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- 2012-04-01 CN CN 201210095421 patent/CN102590627B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2720450Y (en) * | 2004-08-27 | 2005-08-24 | 江苏省电力公司南京供电公司 | High-voltage transmission line parameter detector |
| CN201327509Y (en) * | 2008-12-19 | 2009-10-14 | 河南电力试验研究院 | High-voltage transmission line parameter measuring device and system thereof |
| CN101699301A (en) * | 2009-10-29 | 2010-04-28 | 江苏省电力试验研究院有限公司 | Method for measuring line parameter through induced electricity |
| CN201965178U (en) * | 2010-12-29 | 2011-09-07 | 长沙金艺电子科技有限公司 | Parameter tester for pilot frequency line |
Non-Patent Citations (2)
| Title |
|---|
| 刘焕强.输电线路参数测量方法的对比分析及现场应用.《电工技术》.2006,(第9期),全文. |
| 输电线路参数测量方法的对比分析及现场应用;刘焕强;《电工技术》;20061231(第9期);全文 * |
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| CN102590627A (en) | 2012-07-18 |
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Owner name: LANZHOU UNIVERSITY OF TECHNOLOGY STATE ELECTRIC NE Free format text: FORMER OWNER: LANZHOU UNIVERSITY OF TECHNOLOGY Effective date: 20121105 |
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Effective date of registration: 20121105 Address after: Qilihe District of Gansu city in Lanzhou Province, 730000 West East Road No. 648 Applicant after: Gansu Electric Power Corporation Electric Power Science Research Institute Applicant after: Lanzhou University Of Technology Applicant after: State Grid Corporation of China Address before: Qilihe District of Gansu city in Lanzhou Province, 730000 West East Road No. 648 Applicant before: Gansu Electric Power Corporation Electric Power Science Research Institute Applicant before: Lanzhou University Of Technology |
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