RU2016111588A - DEVICE FOR DETERMINING CIRCUIT CLOSES IN WINDING OF A POWER TRANSFORMER WITH SWITCHING WITHOUT EXCITATION - Google Patents

DEVICE FOR DETERMINING CIRCUIT CLOSES IN WINDING OF A POWER TRANSFORMER WITH SWITCHING WITHOUT EXCITATION Download PDF

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Publication number
RU2016111588A
RU2016111588A RU2016111588A RU2016111588A RU2016111588A RU 2016111588 A RU2016111588 A RU 2016111588A RU 2016111588 A RU2016111588 A RU 2016111588A RU 2016111588 A RU2016111588 A RU 2016111588A RU 2016111588 A RU2016111588 A RU 2016111588A
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RU
Russia
Prior art keywords
winding
excitation
circuit
transformer
switching
Prior art date
Application number
RU2016111588A
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Russian (ru)
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RU2642445C2 (en
Inventor
Сакен Койшыбаевич Шерьязов
Андрей Владимирович Пятков
Original Assignee
Федеральное государственное бюджетное образовательное учреждение высшего образования "Южно-Уральский государственный аграрный университет" (ФГБОУ ВО Южно-Уральский ГАУ)
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Application filed by Федеральное государственное бюджетное образовательное учреждение высшего образования "Южно-Уральский государственный аграрный университет" (ФГБОУ ВО Южно-Уральский ГАУ) filed Critical Федеральное государственное бюджетное образовательное учреждение высшего образования "Южно-Уральский государственный аграрный университет" (ФГБОУ ВО Южно-Уральский ГАУ)
Priority to RU2016111588A priority Critical patent/RU2642445C2/en
Publication of RU2016111588A publication Critical patent/RU2016111588A/en
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Publication of RU2642445C2 publication Critical patent/RU2642445C2/en

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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
    • G01R31/72—Testing of electric windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/34—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system
    • H02H3/347—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system using summation current transformers

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Protection Of Transformers (AREA)
  • Ac-Ac Conversion (AREA)

Claims (2)

1. Устройство определения витковых замыканий в обмотках силового трансформатора с переключением без возбуждения содержит включенные в рассечку фаз силовой цепи трехфазной сети, подключенной к электроустановке, трансформаторы тока, соединенные между собой по схеме треугольника по числу сторон электроустановки, образующие дифференциальную схему защиты, токовые цепи и дифференциальное реле с первой и второй уравнительными и дифференциальной обмотками, расположенными на одном стержне магнитопровода и соединенными между собой, причем полярные выводы трансформаторов тока разных фаз и сторон электроустановки подключены к одному дифференциальному реле, отличающееся тем, что для определения межвиткового замыкания в обмотках силового трансформатора на автотрансформаторе предусмотрены выводы обмотки, имеющие соответствующую цифровую маркировку по числу ступеней переключателя без возбуждения силового трансформатора и позволяющие увеличивать или уменьшать коэффициент трансформации автотрансформатора в зависимости от ступени переключателя без возбуждения силового трансформатора, на которых по числу фаз трансформатора установлены накладки переключения витков регулируемой обмотки, каждая из которых представляет собой металлическую пластину сечением не менее 2,5 мм, прикрепленную одним концом к клемме диэлектрической пластины, а другим концом подключенную к одному из выводов регулируемой обмотки автотрансформатора, расположенного на той же диэлектрической пластине.1. The device for determining the winding short circuits in the windings of a power transformer with switching without excitation contains the phase transformers of the power circuit of a three-phase network connected to the electrical installation, current transformers connected to each other according to the triangle diagram by the number of sides of the electrical installation, forming a differential protection circuit, current circuits and differential relay with the first and second equalizing and differential windings located on the same core of the magnetic circuit and interconnected, and The terminal leads of current transformers of different phases and sides of the electrical installation are connected to one differential relay, characterized in that to determine the inter-turn short circuit in the windings of the power transformer on the autotransformer, winding leads are provided that have the corresponding digital marking by the number of stages of the switch without excitation of the power transformer and allowing to increase or decrease autotransformer transformation coefficient depending on the switch stage without excitation of power t transformer, on which, by the number of phases of the transformer, overlays for switching the turns of the adjustable winding are installed, each of which is a metal plate with a cross section of at least 2.5 mm, attached at one end to the terminal of the dielectric plate, and the other end connected to one of the terminals of the adjustable winding of the autotransformer, located on the same dielectric plate. 2. Устройство по п. 1, отличающееся тем, что для исключения возникновения токов небаланса, обусловленного воздействием высших гармоник, в цепи исполнительного органа параллельно ему установлен фильтр высших гармоник.2. The device according to claim 1, characterized in that in order to exclude the occurrence of unbalance currents caused by the action of higher harmonics, a filter of higher harmonics is installed in parallel with it in the circuit of the actuator.
RU2016111588A 2016-03-28 2016-03-28 Device for determining turn-to-turn short circuits in power transformer windings with switching without excitation RU2642445C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2016111588A RU2642445C2 (en) 2016-03-28 2016-03-28 Device for determining turn-to-turn short circuits in power transformer windings with switching without excitation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2016111588A RU2642445C2 (en) 2016-03-28 2016-03-28 Device for determining turn-to-turn short circuits in power transformer windings with switching without excitation

Publications (2)

Publication Number Publication Date
RU2016111588A true RU2016111588A (en) 2017-10-04
RU2642445C2 RU2642445C2 (en) 2018-01-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU2016111588A RU2642445C2 (en) 2016-03-28 2016-03-28 Device for determining turn-to-turn short circuits in power transformer windings with switching without excitation

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU196111U1 (en) * 2019-01-24 2020-02-18 Николай Михайлович Александров Device for assessing the mechanical state of power transformer windings

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU115385A1 (en) * 1957-10-08 1957-11-30 Н.В. Порозов Method for determining windings with coil in assembled power transformer
US5072186A (en) * 1989-02-15 1991-12-10 Siemens Aktiengesellschaft Method and apparatus for interturn and/or interlayer fault testing of coils
RU2137277C1 (en) * 1998-01-08 1999-09-10 Шинкаренко Сергей Михайлович Device for differential reverse-sequence current filter of three-phase power installation

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Publication number Publication date
RU2642445C2 (en) 2018-01-25

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MM4A The patent is invalid due to non-payment of fees

Effective date: 20180329