CN106646092A - Detection method for secondary system of voltage transformer - Google Patents

Detection method for secondary system of voltage transformer Download PDF

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Publication number
CN106646092A
CN106646092A CN201611149411.2A CN201611149411A CN106646092A CN 106646092 A CN106646092 A CN 106646092A CN 201611149411 A CN201611149411 A CN 201611149411A CN 106646092 A CN106646092 A CN 106646092A
Authority
CN
China
Prior art keywords
voltage transformer
voltage
secondary system
ubo
uao
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.)
Pending
Application number
CN201611149411.2A
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Chinese (zh)
Inventor
崔海
李庆民
杨庆文
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.)
China Second Metallurgy Group Co Ltd
Original Assignee
China Second Metallurgy Group Co Ltd
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.)
Filing date
Publication date
Application filed by China Second Metallurgy Group Co Ltd filed Critical China Second Metallurgy Group Co Ltd
Priority to CN201611149411.2A priority Critical patent/CN106646092A/en
Publication of CN106646092A publication Critical patent/CN106646092A/en
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
    • G01R31/67—Testing the correctness of wire connections in electric apparatus or circuits
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/72—Testing of electric windings

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

The invention relates to a detection method for a secondary system of a voltage transformer, and the method is characterized in that the method comprises the steps: (1), adding a single-phase AC voltage U0 to a primary side of the voltage transformer in a parallel manner; (3), detecting the voltages of Uao, Ubo and Uco from the secondary side of the voltage transformer at the same time, and observing whether Uao, Ubo and Uco reach balance or not; (3), measuring an opening triangular voltage ULN at the third side of the voltage transformer. The method is advantageous in that the method can completely detect the wiring correctness of a secondary system of the voltage transformer; the method can detect the opening triangular polarity and opening triangular voltage of the third side of the voltage transformer; and the method can detect the voltages of secondary measurement windings of the voltage transformer at the same time. The practice proves that the method improves the power supply reliability of the voltage transformer.

Description

Voltage transformer secondary system detecting method
Technical field
The present invention relates to a kind of voltage transformer secondary system detecting method, belongs to safe power supply field.
Background technology
Conventional voltage transformer secondary system detecting method is：Referring to the drawings 1, (1) is from voltage transformer primary side point U is not addedA、UB、UC.；(2) U is measured respectively in voltage transformer secondary sidea、Ub、Uc、ULN.Using conventional voltage transformer two The shortcoming of subsystem detection method is：(1) can not detection voltage mutual inductor secondary connection completely correctness；(2) can not detect Voltage transformer three times is around open delta polarity.
The content of the invention
It is an object of the invention to provide a kind of being capable of the correctness of voltage transformer secondary system wiring, third winding circuit completely The voltage transformer secondary system detecting method of three open-delta wiring correctness of winding polarity and voltage transformer.
The present invention is adopted the following technical scheme that：
(1) single-phase AC voltage U is added from voltage transformer primary side is in parallel0；(2) from voltage transformer secondary side simultaneously Whether the voltage of detection Uao, Ubo, Uco, observation Uao, Ubo, Uco balance；(3) in three side measurement openings three of voltage transformer Angle voltage ULN。
Wherein：ULN=Ua’+Ub’+Uc'=3Ua'=3Ub'=3Uc’。
It is an advantage of the invention that：The correctness of energy detection voltage transformer electrical secondary system wiring completely；Energy detection voltage is mutual Sensor three times is around open delta polarity and open delta voltage；Can be while the electricity of detection voltage transformer double measurement winding Pressure.By it was verified that strengthening the reliability of voltage transformer power transmission using the method for the present invention.
Description of the drawings
Fig. 1 is the circuit theory diagrams of voltage transformer secondary system detecting method of the prior art；
In figure：TYQ---- pressure regulators, DYB1, DYB2, DYB3---- voltmeter, JLMX---- metering buses, DLQ---- Chopper, JYJS---- insulation monitorings, A, B, C---- high voltage power supply, a, b, c---- metering power supply UAThe test electricity of ----once Pressure, Ua----double measurement voltage, ULN----open delta measures voltage；
Fig. 2 is the circuit theory diagrams of the voltage transformer secondary system detecting method of the present invention.
In figure：TYQ---- pressure regulators, DYB1, DYB2, SDYB---- voltmeter, JLMX---- metering buses, DLQ---- Chopper, JYJS---- insulation monitorings, A, B, C---- high voltage power supply, a, b, c---- metering power supply, U0The test electricity of ----once Pressure, Ua、Ub、Uc----double measurement voltage, ULN----open delta measures voltage, Ua’、Ub’、Uc' ----tertiary winding is measured Voltage.
Specific embodiment
Referring to the drawings 2, this is the present invention relates to a kind of voltage transformer secondary system detecting method is by voltage transformer one Secondary side is in parallel, adds single phase industrial frequence voltage to check Secondary Connections of PTs correctness, third winding circuit winding polarity and Three open-delta wiring correctness of voltage transformer.Testing equipment is：0～250V single-phase voltage regulators one, 0～400V tri- Mutually digital one piece of A.C. voltmeter, two pieces of the single-phase digital voltmeters of 0～400V, concrete grammar is：From voltage transformer primary side Parallel connection adds single-phase AC voltage U0, in voltage transformer secondary side while detecting the voltage of Uao, Ubo, Uco, observation Uao, Whether Ubo, Uco balance, and in three sides of voltage transformer open delta voltage U is measuredLN, wherein：ULN=Ua’+Ub’+Uc'= 3Ua'=3Ub'=3Uc’。
The method of the present invention is applied to electric pressure 6KV, 10KV, the voltage transformer of 35KV and uses.

Claims (1)

1. a kind of voltage transformer secondary system detecting method, is characterized in that：(1) list is added from voltage transformer primary side is in parallel Cross streams voltage U0；(2) voltage of Uao, Ubo, Uco is detected simultaneously from voltage transformer secondary side, observation Uao, Ubo, Uco are No balance；(3) open delta voltage U is measured in three sides of voltage transformerLN。
CN201611149411.2A 2016-12-13 2016-12-13 Detection method for secondary system of voltage transformer Pending CN106646092A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611149411.2A CN106646092A (en) 2016-12-13 2016-12-13 Detection method for secondary system of voltage transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611149411.2A CN106646092A (en) 2016-12-13 2016-12-13 Detection method for secondary system of voltage transformer

Publications (1)

Publication Number Publication Date
CN106646092A true CN106646092A (en) 2017-05-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611149411.2A Pending CN106646092A (en) 2016-12-13 2016-12-13 Detection method for secondary system of voltage transformer

Country Status (1)

Country Link
CN (1) CN106646092A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109188181A (en) * 2018-09-08 2019-01-11 国网山西省电力公司电力科学研究院 Network voltage transformer secondary circuit neutral conductor virtual connection judgment method
CN110850352A (en) * 2019-12-01 2020-02-28 国网辽宁省电力有限公司锦州供电公司 Secondary circuit wiring checking method of 10kV voltage transformer
CN113848526A (en) * 2021-09-18 2021-12-28 深圳供电局有限公司 Voltage transformer loop detection method, system, equipment and storage medium
CN116482581A (en) * 2023-06-20 2023-07-25 广东电网有限责任公司佛山供电局 Transformer substation voltage transformer opening triangle voltage secondary circuit tester

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102879630A (en) * 2012-09-17 2013-01-16 浙江省电力公司电力科学研究院 Capacitive voltage transformer failure monitoring instrument
CN103499800A (en) * 2013-09-09 2014-01-08 国家电网公司 Frequency characteristic detecting system of electronic type voltage transformer
CN103969540A (en) * 2013-01-30 2014-08-06 江苏省电力公司常州供电公司 Method for testing wiring of secondary circuits of four-star voltage transformers
CN104597372A (en) * 2014-12-31 2015-05-06 中国二冶集团有限公司 Method for verifying relay protection secondary system
CN104849649A (en) * 2015-05-26 2015-08-19 中国电力科学研究院 System and method for detecting state of secondary circuit of current transformer for metering
CN105301437A (en) * 2015-09-18 2016-02-03 江苏省电力公司常州供电公司 GPS synchronous time service-based substation transformer secondary polarity detection method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102879630A (en) * 2012-09-17 2013-01-16 浙江省电力公司电力科学研究院 Capacitive voltage transformer failure monitoring instrument
CN103969540A (en) * 2013-01-30 2014-08-06 江苏省电力公司常州供电公司 Method for testing wiring of secondary circuits of four-star voltage transformers
CN103499800A (en) * 2013-09-09 2014-01-08 国家电网公司 Frequency characteristic detecting system of electronic type voltage transformer
CN104597372A (en) * 2014-12-31 2015-05-06 中国二冶集团有限公司 Method for verifying relay protection secondary system
CN104849649A (en) * 2015-05-26 2015-08-19 中国电力科学研究院 System and method for detecting state of secondary circuit of current transformer for metering
CN105301437A (en) * 2015-09-18 2016-02-03 江苏省电力公司常州供电公司 GPS synchronous time service-based substation transformer secondary polarity detection method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109188181A (en) * 2018-09-08 2019-01-11 国网山西省电力公司电力科学研究院 Network voltage transformer secondary circuit neutral conductor virtual connection judgment method
CN109188181B (en) * 2018-09-08 2020-09-04 国网山西省电力公司电力科学研究院 Virtual connection judgment method for neutral line of secondary circuit of power grid voltage transformer
CN110850352A (en) * 2019-12-01 2020-02-28 国网辽宁省电力有限公司锦州供电公司 Secondary circuit wiring checking method of 10kV voltage transformer
CN113848526A (en) * 2021-09-18 2021-12-28 深圳供电局有限公司 Voltage transformer loop detection method, system, equipment and storage medium
CN113848526B (en) * 2021-09-18 2024-03-12 深圳供电局有限公司 Voltage transformer loop detection method, system, equipment and storage medium
CN116482581A (en) * 2023-06-20 2023-07-25 广东电网有限责任公司佛山供电局 Transformer substation voltage transformer opening triangle voltage secondary circuit tester
CN116482581B (en) * 2023-06-20 2023-11-14 广东电网有限责任公司佛山供电局 Transformer substation voltage transformer opening triangle voltage secondary circuit tester

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Application publication date: 20170510

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