CN202939271U - Voltage transformer induction withstand voltage experiment connecting circuit based on third harmonic generator - Google Patents

Voltage transformer induction withstand voltage experiment connecting circuit based on third harmonic generator Download PDF

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Publication number
CN202939271U
CN202939271U CN 201220660145 CN201220660145U CN202939271U CN 202939271 U CN202939271 U CN 202939271U CN 201220660145 CN201220660145 CN 201220660145 CN 201220660145 U CN201220660145 U CN 201220660145U CN 202939271 U CN202939271 U CN 202939271U
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CN
China
Prior art keywords
voltage
voltage transformer
measured
connecting circuit
harmonic generator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN 201220660145
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Chinese (zh)
Inventor
王军
刘昊
杜亚军
刘建雄
赵宇驰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YULIN POWER SUPPLY Co OF SHAANXI ELECTRIC POWER Corp
State Grid Corp of China SGCC
Original Assignee
YULIN POWER SUPPLY Co OF SHAANXI ELECTRIC POWER Corp
State Grid Corp of China SGCC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by YULIN POWER SUPPLY Co OF SHAANXI ELECTRIC POWER Corp, State Grid Corp of China SGCC filed Critical YULIN POWER SUPPLY Co OF SHAANXI ELECTRIC POWER Corp
Priority to CN 201220660145 priority Critical patent/CN202939271U/en
Application granted granted Critical
Publication of CN202939271U publication Critical patent/CN202939271U/en
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Abstract

The utility model relates to a voltage transformer induction withstand voltage experiment connecting circuit based on a third harmonic generator, comprising a third harmonic generator, a voltage regulator, a current meter, a voltage meter and a to-be-measured voltage transformer. An output end of the third harmonic generator is connected with the voltage regulator, an output end of the voltage regulator is connected to the to-be-measured voltage transformer, the current meter is connected onto a loop between the voltage regulator and the to-be-measured voltage transformer, and the voltage meter is connected between two input ends of the to-be-measured voltage transformer. According to the utility model, the power frequency is changed to improve the saturation rate of an iron core, thereby achieving the principle of the test voltage of a tested object; and withstand voltage equipment can be made small in volume, light in weight, convenient to transport, simple to operate and strong in compatibility.

Description

The withstand voltage experiment connecting circuit of voltage transformer (VT) induction based on the frequency tripling generator
Technical field
The utility model belongs to the voltage transformer (VT) technical field, relates to a kind of withstand voltage experiment of voltage transformer (VT), especially a kind of withstand voltage experiment connecting circuit of voltage transformer (VT) induction based on the frequency tripling generator.
Background technology
10-35kV epoxy casting graded insulation formula voltage transformer (VT) has the advantages such as volume is little, quality light, easy care; be widely applied in distribution; often have an accident but be in operation; cause instrument without indication; what have even just blasts after putting into operation soon; cause damage of equipment, the crisis personal safety, but always without effective detection method.
Therefore, in order to reduce the loss that causes due to voltage transformer (VT), just need the withstand voltage experiment of reliable voltage transformer (VT).
The tradition power frequency withstand test can only be tested the major insulation of winding (between winding, the insulation of winding between over the ground), and can't test minor insulation (between interlayer, turn-to-turn and cake) and the phase insulation of winding.
The utility model content
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, and a kind of withstand voltage experiment connecting circuit of voltage transformer (VT) induction based on the frequency tripling generator is provided, and this circuit adopts the frequency tripling generator, and it is simple in structure, easily realizes.
The purpose of this utility model solves by the following technical programs:
This withstand voltage experiment connecting circuit of voltage transformer (VT) induction based on the frequency tripling generator comprises frequency tripling generator, pressure regulator, reometer, voltage table and voltage transformer (VT) to be measured; The output terminal of described frequency tripling generator connects pressure regulator, and the output terminal of pressure regulator is connected to voltage transformer (VT) to be measured; Described reometer is connected on loop between pressure regulator and voltage transformer (VT) to be measured; Described voltage table is connected between two input ends of voltage transformer (VT) to be measured.
A winding earth of above-mentioned voltage transformer (VT) to be measured, Secondary Winding one end ground connection, Secondary Winding connects the output of frequency tripling generator and is used for excitation, and another connects compensation reactor.
The utlity model has following beneficial effect:
(1) utilize the change supply frequency, improve the saturation factor of iron core, thereby reach the principle of test specimen trial voltage, can be so that the pressure-resistant equipment volume be little, lightweight, convenient transportation, simple to operate, compatible strong.
(2) the frequency tripling withstand voltage test not only can be examined the major insulation of mutual inductor and transformer, can also examine its minor insulation (between winding inter-turn, cake) simultaneously, reaches desirable test objective.
Description of drawings
Fig. 1 is circuit connection diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Referring to Fig. 1, the utility model comprises frequency tripling generator 1, pressure regulator 2, reometer 3, voltage table 4 and voltage transformer (VT) to be measured 5 based on the withstand voltage experiment connecting circuit of voltage transformer (VT) induction of frequency tripling generator; The output terminal of described frequency tripling generator 1 connects pressure regulator 2, and the output terminal of pressure regulator 2 is connected to voltage transformer (VT) 5 to be measured; Described reometer 4 is connected on loop between pressure regulator 2 and voltage transformer (VT) to be measured 5; Described voltage table 4 is connected between two input ends of voltage transformer (VT) 5 to be measured.
With a winding earth end of voltage transformer (VT) 5 to be measured, ground connection together with shell (if there is), base, Secondary Winding one end ground connection, Secondary Winding connects the output of frequency tripling transformer and is used for excitation, and another connects compensation reactor, with the compensation capacity current.

Claims (2)

1. the withstand voltage experiment connecting circuit of voltage transformer (VT) induction based on the frequency tripling generator, is characterized in that, comprises frequency tripling generator (1), pressure regulator (2), reometer (3), voltage table (4) and voltage transformer (VT) to be measured (5); The output terminal of described frequency tripling generator (1) connects pressure regulator (2), and the output terminal of pressure regulator (2) is connected to voltage transformer (VT) to be measured (5); Described reometer (4) is connected on loop between pressure regulator (2) and voltage transformer (VT) to be measured (5); Described voltage table (4) is connected between two input ends of voltage transformer (VT) to be measured (5).
2. the voltage transformer (VT) based on the frequency tripling generator according to claim 1 is responded to withstand voltage experiment connecting circuit, it is characterized in that, a winding earth of described voltage transformer (VT) to be measured (5), Secondary Winding one end ground connection, Secondary Winding connects frequency tripling generator (1) output and is used for excitation, and another connects compensation reactor.
CN 201220660145 2012-12-04 2012-12-04 Voltage transformer induction withstand voltage experiment connecting circuit based on third harmonic generator Active CN202939271U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220660145 CN202939271U (en) 2012-12-04 2012-12-04 Voltage transformer induction withstand voltage experiment connecting circuit based on third harmonic generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220660145 CN202939271U (en) 2012-12-04 2012-12-04 Voltage transformer induction withstand voltage experiment connecting circuit based on third harmonic generator

Publications (1)

Publication Number Publication Date
CN202939271U true CN202939271U (en) 2013-05-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220660145 Active CN202939271U (en) 2012-12-04 2012-12-04 Voltage transformer induction withstand voltage experiment connecting circuit based on third harmonic generator

Country Status (1)

Country Link
CN (1) CN202939271U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103399267A (en) * 2013-08-19 2013-11-20 国家电网公司 Three-phase power distribution induction voltage withstanding tester
CN104078218A (en) * 2014-07-11 2014-10-01 江苏华鹏变压器有限公司 Transformer test tapping method
CN109946571A (en) * 2019-01-30 2019-06-28 上海二十冶建设有限公司 The method for carrying out voltage transformer induced over voltage withstand test using relay-protection tester

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103399267A (en) * 2013-08-19 2013-11-20 国家电网公司 Three-phase power distribution induction voltage withstanding tester
CN103399267B (en) * 2013-08-19 2016-08-24 国家电网公司 A kind of three-phase distribution inducting-voltage proof tester
CN104078218A (en) * 2014-07-11 2014-10-01 江苏华鹏变压器有限公司 Transformer test tapping method
CN109946571A (en) * 2019-01-30 2019-06-28 上海二十冶建设有限公司 The method for carrying out voltage transformer induced over voltage withstand test using relay-protection tester

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