RU93041095A - DEVICE FOR DIFFERENTIAL-PHASE HF-PROTECTION OF ELECTRICAL TRANSMISSION LINE - Google Patents

DEVICE FOR DIFFERENTIAL-PHASE HF-PROTECTION OF ELECTRICAL TRANSMISSION LINE

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Publication number
RU93041095A
RU93041095A RU93041095/07A RU93041095A RU93041095A RU 93041095 A RU93041095 A RU 93041095A RU 93041095/07 A RU93041095/07 A RU 93041095/07A RU 93041095 A RU93041095 A RU 93041095A RU 93041095 A RU93041095 A RU 93041095A
Authority
RU
Russia
Prior art keywords
protection
input
phase
differential
transmission line
Prior art date
Application number
RU93041095/07A
Other languages
Russian (ru)
Other versions
RU2039405C1 (en
Inventor
я.С. Гельфанд
А.И. Левиуш
В.Т. Ужегов
Original Assignee
Научно-исследовательский институт электроэнергетики
Filing date
Publication date
Application filed by Научно-исследовательский институт электроэнергетики filed Critical Научно-исследовательский институт электроэнергетики
Priority to RU93041095A priority Critical patent/RU2039405C1/en
Priority claimed from RU93041095A external-priority patent/RU2039405C1/en
Publication of RU93041095A publication Critical patent/RU93041095A/en
Application granted granted Critical
Publication of RU2039405C1 publication Critical patent/RU2039405C1/en

Links

Claims (1)

Устройство для дифференциально-фазной ВЧ-защиты линии электропередачи относится к электротехнике, в частности к устройствам релейной защиты линий электропередач. Устройство содержит вход сигнала постоянного напряжения и измерительно-логический блок, снабженный входом ВЧ-блокировки защиты, выходом на отключение и выходом "Пуск ВЧ". Введение последовательно соединенных первого элемента выдержки времени на возврат, элемента выдержки времени на срабатывание, второго элемента выдержки времени на возврат и логического элемента ИЛИ, подключение второго входа логического элемента ИЛИ и входа первого элемента выдержки времени на возврат к входу ВЧ-сигнала, а выхода логического элемента ИЛИ к входу ВЧ-блокировки защиты позволяет исключить излишнее срабатывание защиты при включении неповрежденной отключенной фазы ВЛ под напряжение и замыкании ее в транзит.A device for differential-phase RF protection of a transmission line relates to electrical engineering, in particular, to devices for relay protection of power transmission lines. The device contains a DC voltage input and a measuring-logic unit equipped with an RF lock-up protection input, a shutdown output, and an RF Start output. Introduction of the first return delay element sequentially connected, the response time delay element, the second return delay element and the OR logic element, the second input of the OR logic element and the first time element input for return to the RF signal input, and the logical element OR to the input of the RF-blocking protection prevents unnecessary operation of the protection when the intact disconnected phase of the power line is energized and shorted into transit.
RU93041095A 1993-08-20 1993-08-20 Device for differential-phase high-frequency protection of electric power line RU2039405C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU93041095A RU2039405C1 (en) 1993-08-20 1993-08-20 Device for differential-phase high-frequency protection of electric power line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU93041095A RU2039405C1 (en) 1993-08-20 1993-08-20 Device for differential-phase high-frequency protection of electric power line

Publications (2)

Publication Number Publication Date
RU93041095A true RU93041095A (en) 1995-05-27
RU2039405C1 RU2039405C1 (en) 1995-07-09

Family

ID=20146513

Family Applications (1)

Application Number Title Priority Date Filing Date
RU93041095A RU2039405C1 (en) 1993-08-20 1993-08-20 Device for differential-phase high-frequency protection of electric power line

Country Status (1)

Country Link
RU (1) RU2039405C1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2735949C1 (en) * 2020-04-03 2020-11-11 Общество с ограниченной ответственностью "Релематика" Method of protecting power transmission lines with renewable energy sources

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