CN104297532B - Voltage transformer calibrating termination - Google Patents

Voltage transformer calibrating termination Download PDF

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Publication number
CN104297532B
CN104297532B CN201410634654.XA CN201410634654A CN104297532B CN 104297532 B CN104297532 B CN 104297532B CN 201410634654 A CN201410634654 A CN 201410634654A CN 104297532 B CN104297532 B CN 104297532B
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China
Prior art keywords
terminal
chip switching
output wiring
voltage transformer
connect
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Active
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CN201410634654.XA
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CN104297532A (en
Inventor
马永刚
王闵飞
宋杏然
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State Grid Corp of China SGCC
State Grid Hebei Electric Power Co Ltd
Cangzhou Power Supply Co of State Grid Hebei Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Hebei Electric Power Co Ltd
Cangzhou Power Supply Co of State Grid Hebei Electric Power Co Ltd
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Priority to CN201410634654.XA priority Critical patent/CN104297532B/en
Publication of CN104297532A publication Critical patent/CN104297532A/en
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Abstract

The invention discloses a kind of voltage transformer calibrating termination it is characterised in that:Including low-voltage distribution box, single-chip switching, monitor voltmeter, binding post and wire; single-chip switching is loaded in low-voltage distribution box; three input wires terminals of described termination connect tested transformer test terminal; output wiring terminal connects mutual-inductor tester sampling terminal; two of which output wiring terminal accesses and monitors voltmeter; protect mutual-inductor tester to damage from surge voltage during for switching circuit, pass through during use to operate the break-make of single-chip switching, switch between three different measuring loops.This device is applied only to pass through a boost process, can complete many transformers are examined and determine, greatly improve calibration operation efficiency, decrease personnel depaly, reduce the number of times of assembly and disassembly Hi-pot test line, reduce Hi-pot test electrification time, reduce the security risk in process of the test, improve enterprise security benefit.

Description

Voltage transformer calibrating termination
Technical field
The present invention relates to voltage transformer Calibration Technology field.
Background technology
The effect of voltage transformer is that relation transformation becomes the secondary electricity of 100V or more low-grade standard in proportion high voltage Pressure, uses for protection, metering, metering device, meanwhile, using voltage transformer can by high voltage and electrician every From having ensured personal security.Due to above-mentioned functions, voltage transformer is widely used in the generating of electric power, transmission & distribution electrical domain.Supplying Metering, metering device use when, in order to measure or instrument numerical value accurate, then be necessarily required to periodically voltage transformer be measured Calibrating, otherwise cannot ensure its accuracy, cause false protection, metering mistake etc..In verification process, need to be sequentially connected friendship Stream power supply, pressure regulator, booster and standard potential transformer, standard potential transformer is connected with tested voltage transformer again, and one Standard potential transformer, during buck each time, can only be examined and determine a tested voltage transformer, and scene is typically every Group transformer is two to three, needs repeatedly to assemble and disassemble Hi-pot test line, is repeatedly risen high-pressure process, needs multiple calibration operations Personnel coordinate, and the band operation with high pressure time is long, and security risk is high, and calibration operation efficiency is low.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of voltage transformer calibrating termination, only passes through once to rise Press through journey, you can complete two or three transformers are examined and determine, greatly improve calibration operation efficiency, reduce security risk.
For solving above-mentioned technical problem, the technical solution used in the present invention is:A kind of voltage transformer calibrating wiring Device it is characterised in that:Including low-voltage distribution box, single-chip switching, monitor voltmeter, binding post and wire, single-chip switching fills In low-voltage distribution box, the second single-chip switching of connecting between the first input wires terminal and the first output wiring terminal, second is defeated Enter the 4th single-chip switching of connecting between binding post and the first output wiring terminal, the first input wires terminal is connect with the second output Connect between line terminals the first single-chip switching, the 3rd monolithic of connecting between the second input wires terminal and the second output wiring terminal Switch, serial monitoring voltmeter between the second output wiring terminal and the 3rd output wiring terminal, described first input terminal Son and the second input wires terminal are respectively intended to connect the secondary wire wrap terminal of two accredited voltage transformers, and described first is defeated Go out binding post and the 3rd output wiring terminal connects mutual-inductor tester.
When voltage transformer is examined and determine, alternating current power supply, pressure regulator, booster and standard potential transformer are carried out even successively Connect, the primary winding of the primary winding of standard potential transformer and two voltage transformers to be measured is in parallel, normal voltage mutual inductance Device secondary coil x0End and mutual-inductor tester x end connect, standard potential transformer secondary coil a0End, two The secondary coil a of voltage transformer to be measured1End and a2End is connected with a end of mutual-inductor tester respectively, voltage transformer one to be measured Secondary coil x1End connects the first input wires terminal of described termination, the secondary coil x of voltage transformer two to be measured2 End connects the second input wires terminal of described termination, and the first output wiring terminal is connected with the D end of mutual-inductor tester, 3rd output wiring terminal is connected with the K end of mutual-inductor tester, series impedance between the D end of mutual-inductor tester and a end, connects The single-chip switching of line apparatus is often set to disconnection.Examine and determine voltage transformer to be measured first to close for the moment the first single-chip switching, voltmeter refers to Think when showing no more than 5% that polarity and wiring are correct, disconnect the first single-chip switching, close the second single-chip switching, now transformer school Test instrument measuring loop and connect the error that can measure voltage transformer one to be measured from mutual-inductor tester, after measurement, disconnect the second monolithic Switch;Examine and determine 3rd single-chip switching that first closes during voltage transformer two to be measured, voltmeter instruction think when being not more than 5% polarity and Wiring is correct, disconnects the 3rd single-chip switching, close the 4th single-chip switching, and now mutual-inductor tester measuring loop connection can be from mutual Sensor tester measures the error of voltage transformer two to be measured, disconnects the 4th single-chip switching after measurement.
As the technical program one kind improvement, a kind of voltage transformer calibrating termination it is characterised in that:Also wrap Include the 6th single-chip switching of connecting between the 3rd input wires terminal and the first output wiring terminal, the 3rd input wires terminal and Series connection the 5th single-chip switching between two output wiring terminals, it is mutual that described 3rd input wires terminal connects the 3rd accredited voltage The secondary wire wrap terminal of sensor.
When voltage transformer is examined and determine, alternating current power supply, pressure regulator, booster and standard potential transformer are carried out even successively Connect, the primary winding of the primary winding of standard potential transformer and voltage transformer to be measured is in parallel, standard potential transformer Secondary coil x0End and mutual-inductor tester x end connect, standard potential transformer secondary coil a0End, three to be measured The secondary coil a of voltage transformer1End, a2End and a3End is connected with a end of mutual-inductor tester respectively, voltage transformer to be measured One secondary coil x1End connects the first input wires terminal of described termination, the secondary coil of voltage transformer two to be measured x2End connects the second input wires terminal of described termination, the secondary coil x of voltage transformer three to be measured3End connects described 3rd input wires terminal of termination, the first output wiring terminal is connected with the D end of mutual-inductor tester, and the 3rd output connects Line terminals are connected with the K end of mutual-inductor tester, series impedance between the D end of mutual-inductor tester and a end, the list of termination Piece switch is often set to disconnection.Examine and determine voltage transformer to be measured first to close for the moment the first single-chip switching, voltmeter instruction is not more than 5% When think that polarity and wiring are correct, disconnect the first single-chip switching, close the second single-chip switching, and now mutual-inductor tester measures back The error that can measure voltage transformer one to be measured from mutual-inductor tester is connected on road, disconnects the second single-chip switching after measurement;Calibrating First close during voltage transformer two to be measured 3rd single-chip switching, and voltmeter instruction thinks when being not more than 5% that polarity and wiring are correct, Disconnect the 3rd single-chip switching, close the 4th single-chip switching, now mutual-inductor tester measuring loop connection can be from transducer check The error of voltage transformer two to be measured measured by instrument, disconnects the 4th single-chip switching after measurement;Examine and determine during voltage transformer three to be measured first Close the 5th single-chip switching, and voltmeter instruction thinks when being not more than 5% that polarity and wiring are correct, disconnect the 5th single-chip switching, close 6th single-chip switching, now mutual-inductor tester measuring loop connection can measure voltage transformer three to be measured from mutual-inductor tester Error, after measurement disconnect the 6th single-chip switching.
Have the beneficial effects that using produced by technique scheme:This device is applied only to pass through a boost process, that is, Can complete many transformers are examined and determine, greatly improve calibration operation efficiency, decrease personnel depaly, reduce assembly and disassembly high pressure and survey The number of times of examination line, reduces Hi-pot test electrification time, reduces the security risk in process of the test, improves enterprise security effect Benefit.
Brief description
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the circuit diagram of the present invention.
1st, the first single-chip switching;2nd, the second single-chip switching;3rd, the 3rd single-chip switching;4th, the 4th single-chip switching;5th, the 5th is single Piece switchs;6th, the 6th single-chip switching;7th, the first input wires terminal;8th, the second input wires terminal;9th, the 3rd input terminal Son;10th, the first output wiring terminal;11st, the second output wiring terminal;12nd, the 3rd output wiring terminal;13rd, monitor voltmeter; 14th, voltage transformer to be measured;15th, standard potential transformer;16th, booster;17th, pressure regulator;18th, alternating current power supply;19th, transformer Tester;20th, termination;
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Specific embodiment
Specific embodiment one
Voltage transformer calibrating termination, including low-voltage distribution box, four single-chip switchings, supervision voltmeters 13rd, binding post and wire, single-chip switching is loaded in low-voltage distribution box, the first input wires terminal 7 and the first outlet terminal Connect the second single-chip switching 2 between son 10, connect the 4th between the second input wires terminal 8 and the first output wiring terminal 10 singly Piece switch 4, the first single-chip switching 1 of connecting between the first input wires terminal 7 and the second output wiring terminal 11, the second input connects Connect between line terminals 8 and the second output wiring terminal 11 the 3rd single-chip switching 3, the second output wiring terminal 11 and the 3rd output Serial monitoring voltmeter 13 between binding post 12.
When to two voltage transformer calibratings, by alternating current power supply 18, pressure regulator 17, booster 16 and normal voltage mutual inductance Device 15 is attached successively, by the primary winding of the primary winding of standard potential transformer 15 and two voltage transformers to be measured simultaneously Connection, standard potential transformer 15 secondary coil x0The x end of end and mutual-inductor tester 19 connects, standard potential transformer 15 Secondary coil a0End, the secondary coil a of two voltage transformers to be measured1End and a2The end a with mutual-inductor tester 19 respectively End connects, the secondary coil x of voltage transformer one to be measured1End connects the first input wires terminal 7 of described termination, to be measured The secondary coil x of voltage transformer two2End connects the second input wires terminal 8 of described termination, the first outlet terminal Son 10 is connected with the D end of mutual-inductor tester 19, and the 3rd output wiring terminal 12 is connected with the K end of mutual-inductor tester 19, mutually Series impedance between the D end of sensor tester 19 and a end, the single-chip switching of termination is often set to disconnection.Examine and determine voltage to be measured Transformer first closes for the moment the first single-chip switching 1, and voltmeter instruction thinks when being not more than 5% that polarity and wiring are correct, disconnect first Single-chip switching 1, close the second single-chip switching 2, and now mutual-inductor tester 19 measuring loop connection can be from mutual-inductor tester 19 Measure the error of voltage transformer one to be measured, after measurement, disconnect the second single-chip switching 2;Examine and determine and first close during voltage transformer two to be measured Upper 3rd single-chip switching 3, voltmeter instruction thinks when being not more than 5% that polarity and wiring are correct, disconnect the 3rd single-chip switching 3, close 4th single-chip switching 4, it is mutual that now mutual-inductor tester 19 measuring loop connection can measure voltage to be measured from mutual-inductor tester 19 The error of sensor two, disconnects the 4th single-chip switching 4 after measurement.
Specific embodiment two
As specific embodiment one one kind improvement, a kind of voltage transformer calibrating termination it is characterised in that: Also include connecting between the 3rd input wires terminal 9 and the first output wiring terminal 10 the 6th single-chip switching 6, the 3rd input wires Connect between terminal 9 and the second output wiring terminal 11 the 5th single-chip switching 5, described 3rd input wires terminal 9 connects to be checked Determine the secondary wire wrap terminal of voltage transformer three, the secondary coil a of voltage transformer three to be examined and determine3End and mutual-inductor tester 19 A end connect, the secondary coil x of voltage transformer three to be measured3End connects the 3rd input wires terminal 9 of described termination. Remaining connected mode is identical with specific embodiment one.
Examine and determine 5th single-chip switching 5 that first closes during voltage transformer three to be measured, voltmeter instruction thinks pole when being not more than 5% Property and wiring correct, disconnect the 5th single-chip switching 5, close the 6th single-chip switching 6, and now mutual-inductor tester 19 measuring loop connects The logical error that can measure voltage transformer three to be measured from mutual-inductor tester 19, disconnects the 6th single-chip switching 6 after measurement.

Claims (2)

1. a kind of voltage transformer calibrating termination it is characterised in that:Including low-voltage distribution box, single-chip switching, monitor electricity Pressure table(13), binding post and wire, single-chip switching is loaded in low-voltage distribution box, the first input wires terminal(7)Defeated with first Go out binding post(10)Between connect the second single-chip switching(2), the second input wires terminal(8)With the first output wiring terminal (10)Between connect the 4th single-chip switching(4), the first input wires terminal(7)With the second output wiring terminal(11)Between connect First single-chip switching(1), the second input wires terminal(8)With the second output wiring terminal(11)Between connect the 3rd single-chip switching (3), the second output wiring terminal(11)With the 3rd output wiring terminal(12)Between serial monitoring voltmeter, described first input Binding post(7)With the second input wires terminal(8)It is respectively intended to connect the secondary winding terminal of two accredited voltage transformers Son, described first output wiring terminal(10)With the 3rd output wiring terminal(12)Connect mutual-inductor tester.
2. a kind of voltage transformer calibrating termination according to claim 1 it is characterised in that:Also include the 3rd defeated Enter binding post(9)With the first output wiring terminal(10)Between connect the 6th single-chip switching(6), the 3rd input wires terminal (9)With the second output wiring terminal(11)Between connect the 5th single-chip switching(5), described 3rd input wires terminal(9)Connect The secondary wire wrap terminal of voltage transformer three to be examined and determine.
CN201410634654.XA 2014-11-06 2014-11-06 Voltage transformer calibrating termination Active CN104297532B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN104297532B true CN104297532B (en) 2017-03-08

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Publication number Priority date Publication date Assignee Title
CN106597348A (en) * 2016-12-29 2017-04-26 国网山东省电力公司滨州供电公司 Voltage transformer test auxiliary device
CN107765207B (en) * 2017-10-09 2020-06-02 国网四川省电力公司达州供电公司 Portable transformer comprehensive tester capable of realizing multipath measurement and testing method thereof
CN108872774B (en) * 2018-04-26 2022-01-07 许继集团有限公司 Converter detection method and device in protection device and aviation plug
CN110501535A (en) * 2019-09-03 2019-11-26 国网山东省电力公司莱芜供电公司 It is a kind of for collecting the electrical test tool box and application method of test lead

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Publication number Priority date Publication date Assignee Title
KR20090078182A (en) * 2008-01-14 2009-07-17 한국전력공사 Terminal test block
CN101625403A (en) * 2009-07-28 2010-01-13 山西省电力公司电力科学研究院 Testing device for high-voltage three-phase combination transformer
CN102305919A (en) * 2011-05-25 2012-01-04 国网电力科学研究院武汉南瑞有限责任公司 Calibration device and method capable of synchronously measuring multiple voltage transformers at one time
CN202815205U (en) * 2012-10-17 2013-03-20 沧州供电公司 Device for improving calibration efficiency of current transformer
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
CN204142777U (en) * 2014-11-06 2015-02-04 国家电网公司 Voltage transformer (VT) calibrating termination

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090078182A (en) * 2008-01-14 2009-07-17 한국전력공사 Terminal test block
CN101625403A (en) * 2009-07-28 2010-01-13 山西省电力公司电力科学研究院 Testing device for high-voltage three-phase combination transformer
CN102305919A (en) * 2011-05-25 2012-01-04 国网电力科学研究院武汉南瑞有限责任公司 Calibration device and method capable of synchronously measuring multiple voltage transformers at one time
CN202815205U (en) * 2012-10-17 2013-03-20 沧州供电公司 Device for improving calibration efficiency of current transformer
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
CN204142777U (en) * 2014-11-06 2015-02-04 国家电网公司 Voltage transformer (VT) calibrating termination

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