SU78912A1 - Device for powering current coils of ohmmeter distance protection - Google Patents

Device for powering current coils of ohmmeter distance protection

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Publication number
SU78912A1
SU78912A1 SU379281A SU379281A SU78912A1 SU 78912 A1 SU78912 A1 SU 78912A1 SU 379281 A SU379281 A SU 379281A SU 379281 A SU379281 A SU 379281A SU 78912 A1 SU78912 A1 SU 78912A1
Authority
SU
USSR - Soviet Union
Prior art keywords
ohmmeters
ohmmeter
current coils
current
distance protection
Prior art date
Application number
SU379281A
Other languages
Russian (ru)
Inventor
Г.И. Атабеков
Original Assignee
Г.И. Атабеков
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 Г.И. Атабеков filed Critical Г.И. Атабеков
Priority to SU379281A priority Critical patent/SU78912A1/en
Application granted granted Critical
Publication of SU78912A1 publication Critical patent/SU78912A1/en

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Description

Устройства дл  защиты электрических установок от коротких замыканий между фазами и при замыкании на землю с применением омметров известны.Devices for protecting electrical installations against short-circuits between phases and when earth-faulting with ohmmeters are known.

Новым в предложении  вл етс  включение дл  питани  омметров промежуточных трехобмоточных трансформаторов, что увеличивает чувствительность действи  защиты.New in the proposal is the inclusion for powering ohmmeters of intermediate three-winding transformers, which increases the sensitivity of the protection.

На череже изображена схема нредложенного устройства.The diagram shows the layout of the proposed device.

В три линейных провода А, В и С защищаемой установки включены три трехобмоточных премежуточных трансформатора У, имеющие две первичные обмотки 5 и 5 и одну вторичную обмотку 4. Обмотки 2 соединены в звезду, обмотки 3 vi 4 соединены в треугольник.Three linear wires A, B and C of the installation to be protected include three three-winding intermediate transformers Y, having two primary windings 5 and 5 and one secondary winding 4. Windings 2 are connected in a star, windings 3 vi 4 are connected in delta.

К верщинам треугольника, образованного обмотками 4, присоединены омметры 5, включенные звездой дл  защиты установки от междуфазных повреждений, а в ветви этого треугольника включены омметры 6 дл  защ.иты установки при по влении замыканий на землю. Омметры 5 включены в цепь, где протекающие токи пропорциональны разности линейных токов установки, г омметры 6 включены в цепь, где токи пропорциональны сумме линейного тока соответствующей фазы и тока в нулевом проводе.Ohmmeters 5, connected by a star to protect the installation from interfacial damage, are attached to the vertices of the triangle formed by the windings 4, and ohmmeters 6 are included in the branches of this triangle to protect the installation when a ground fault occurs. Ohmmeters 5 are included in the circuit, where the flowing currents are proportional to the difference of the linear currents of the installation, r Ohmmeters 6 are included in the circuit, where the currents are proportional to the sum of the linear current of the corresponding phase and the current in the neutral wire.

Промел уточиые трансформаторы, включенные по предложенной схеме, уменьщают токи в обмотках омметров и увеличивают чувствительность работы защиты. Указанные преимущества особенно вал-сны в тех случа х, когда в защищаемой системе возникают больщие токи коротких замыканий.Promelo utokichye transformers included in the proposed scheme, reduce the currents in the windings of ohmmeters and increase the sensitivity of the protection. These advantages are especially shaft-sleeps in cases when large short circuit currents occur in the protected system.

Предмет изобретени Subject invention

Claims (2)

1. Устройство дл  питани  токовых катущек o мeтpoв диетанциоиных защит линий от междуфазных повреждений, отличающеес 1. Device for powering current coils o measures dietetic protection of lines from interfacial damage, different применением, в цел х повышени  чувствительности, промежуточных трехобмоточных трансформаторов-тока, у которых одна из первичных обмоток обтекаетс  линейным током, а друга  током нулевой последовательности , вторичные же обмотки соединены в треугольник, к вершинам которого нрисоединены омметры, соединенные в звезду.using, for the purpose of increasing sensitivity, intermediate three-winding current transformers, in which one of the primary windings flows around a linear current and another with a zero-sequence current, the secondary windings are connected in a triangle, to the vertices of which are connected ohmmeters connected in a star. 2. Устройство по п. 1, от л и ч а ю щее с  тем, что в ветви треугольника , образованного вторичными обмотками промежуточных трансформаторов , включены омметры дистанционных заш,ит от замыканий ип землю.2. The device according to claim 1, which is such that in the branch of the triangle formed by the secondary windings of the intermediate transformers are included ohmmeters of remote protection and it from the closures of the ground.
SU379281A 1947-08-29 1947-08-29 Device for powering current coils of ohmmeter distance protection SU78912A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU379281A SU78912A1 (en) 1947-08-29 1947-08-29 Device for powering current coils of ohmmeter distance protection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU379281A SU78912A1 (en) 1947-08-29 1947-08-29 Device for powering current coils of ohmmeter distance protection

Publications (1)

Publication Number Publication Date
SU78912A1 true SU78912A1 (en) 1948-11-30

Family

ID=48253095

Family Applications (1)

Application Number Title Priority Date Filing Date
SU379281A SU78912A1 (en) 1947-08-29 1947-08-29 Device for powering current coils of ohmmeter distance protection

Country Status (1)

Country Link
SU (1) SU78912A1 (en)

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