SU449416A1 - Device for protection of three-wire input of transformers and autotransformers - Google Patents

Device for protection of three-wire input of transformers and autotransformers

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Publication number
SU449416A1
SU449416A1 SU1895162A SU1895162A SU449416A1 SU 449416 A1 SU449416 A1 SU 449416A1 SU 1895162 A SU1895162 A SU 1895162A SU 1895162 A SU1895162 A SU 1895162A SU 449416 A1 SU449416 A1 SU 449416A1
Authority
SU
USSR - Soviet Union
Prior art keywords
transformers
winding
protection
autotransformers
wire input
Prior art date
Application number
SU1895162A
Other languages
Russian (ru)
Inventor
Анатолий Александрович Бесчастных
Эмилия Вириладовна Трушина
Original Assignee
Свердловское Районное Энергетическое Управление "Свердловэнерго"
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 Свердловское Районное Энергетическое Управление "Свердловэнерго" filed Critical Свердловское Районное Энергетическое Управление "Свердловэнерго"
Priority to SU1895162A priority Critical patent/SU449416A1/en
Application granted granted Critical
Publication of SU449416A1 publication Critical patent/SU449416A1/en

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  • Protection Of Transformers (AREA)

Description

1one

Изобретение относитс  к устройствам дл  защиты трансформаторов и автотрансформаторов .This invention relates to devices for protecting transformers and autotransformers.

Известное устройство, содерж ащее трансформаторы тока со стороны выводов среднего , низшего напр жени  и в п-епи комоенсационной обмотки, на 1выход которых .включена рабоча  обмотка дифференциального реле, котарОе содержит также основдую тормозную обмотку, недостаточно чу1В СТ1вительно и надежно ири внешних коротких замыкани х.The known device, which contains current transformers on the side of the outputs of the middle, lower voltage and in the p-circuit of the compensation winding, on the output of which the operating winding of the differential relay is included, which also contains the braking winding, it is not enough to have an external short circuit .

В предложенном устройст1ве с целью ловышени  чувствительности и «адежностж дифференциальное реле снабжено дополнительной тормозной, обмоткой, котора  включена на выход трансфор|Маторо;в тока со стороны выводов низшего напр жени , а основна  тормозна  обмотка включена на выход трансформаторов тока со стороны выводов среднего напр жени .In the proposed device, in order to increase sensitivity and "reliability, the differential relay is equipped with an additional braking winding which is connected to the output of the transformer Matoro; into the current from the side of the low voltage leads, and the main brake winding is connected to the output of the current transformers from the side of the medium voltage leads .

На чертеже представлена схема вклюЧени  устройства.The drawing shows a diagram of the inclusion of the device.

Трансформатор содерж1ит выводы высшего напр жени  1, выводы Среднего напр жени  2 и выводы низшего на1пр жен1и  3. Траисформаторы тока 4 квлючены в цепь выводов среднего Напр жени  2, трансформаторы тока 5 включены в цепь выводов низшего напр жени  3. В схему включено дифференциальное реле 6 с рабочей обмоткой 7 и тормознымиThe transformer contains higher voltage terminals 1, Medium voltage terminals 2 and lower voltage terminals 3. Current tracers 4 are connected to the medium voltage terminals 2 circuit, current transformers 5 are included in the low voltage terminals circuit 3. The differential relay 6 is switched on with working winding 7 and brake

обмотками 8 и 9. Рабоча  обмотка 7 реле 6 подключена к трансформаторам тока 10 в цени компенсационной обмотки 11 силового трансформатора, тормозна  обмотка 8 подключена к трансфор1маторам тока 4 выводов среднего напр жени  2, а обмотка 9 - к трансформаторам тока 5 (В цепи низшего напр жени . 12 - основна  обмотка, 13-регулировочна  обмотка трансформатора. Каждый изwindings 8 and 9. The working winding 7 of the relay 6 is connected to current transformers 10 at the price of the compensation winding 11 of the power transformer, the brake winding 8 is connected to transformers of current 4 of the terminals of the average voltage 2, and winding 9 to current transformers 5 12 - the main winding, 13-adjusting transformer winding. Each of

трех компле,ктов трансформаторов тока 4, 5, 10 соединен по схеме фильтра токов нулевой последовательности, что поз-вол ет исключить дополнительное торможение рел-е от токов нагрузки .Three sets of current transformers 4, 5, 10 are connected according to the zero-sequence current filter scheme, which makes it possible to exclude additional braking of the rel from load currents.

Устройство дл  защиты трехпроводного ввода трансформаторов и автотрансформаторо В работает следующим образом. При отключенной стороне высшего напр  сени  трансформатора (1) и внешнем однофазном коротком замыкании на стороне среднего напр жени  2 ток короткого замыкани  проходит по всей регулировочной 13 и компенсационной И обмоткам трансформатора. Максимальные токи протекают также иDevice for protection of the three-wire input of transformers and autotransformer In works as follows. With the transformer's highest side disconnected (1) and an external single-phase short circuit on the medium-voltage side 2, the short-circuit current passes through the entire adjusting 13 and compensatory and transformer windings. Maximum currents also flow

в рабочей 7 обмотке реле 6 - реле защиты трехпроводного ввода. Торможение в этом случае Я1вл етс  суммарным от тормозных токов , создаваемых в обмотках 8 и 9 реле 6. Торможение, создаваемое обмотками 8 и 9,in the working 7 winding of the relay 6 - the protection relay of the three-wire input. The braking in this case is the total of the braking currents generated in the windings 8 and 9 of the relay 6. The braking created by the windings 8 and 9,

примерно равно.about the same.

SU1895162A 1973-03-23 1973-03-23 Device for protection of three-wire input of transformers and autotransformers SU449416A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1895162A SU449416A1 (en) 1973-03-23 1973-03-23 Device for protection of three-wire input of transformers and autotransformers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1895162A SU449416A1 (en) 1973-03-23 1973-03-23 Device for protection of three-wire input of transformers and autotransformers

Publications (1)

Publication Number Publication Date
SU449416A1 true SU449416A1 (en) 1974-11-05

Family

ID=20545913

Family Applications (1)

Application Number Title Priority Date Filing Date
SU1895162A SU449416A1 (en) 1973-03-23 1973-03-23 Device for protection of three-wire input of transformers and autotransformers

Country Status (1)

Country Link
SU (1) SU449416A1 (en)

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