SU665360A1 - Current symmetric component relay - Google Patents

Current symmetric component relay

Info

Publication number
SU665360A1
SU665360A1 SU782574078A SU2574078A SU665360A1 SU 665360 A1 SU665360 A1 SU 665360A1 SU 782574078 A SU782574078 A SU 782574078A SU 2574078 A SU2574078 A SU 2574078A SU 665360 A1 SU665360 A1 SU 665360A1
Authority
SU
USSR - Soviet Union
Prior art keywords
symmetric component
component relay
current symmetric
voltage
amplifier
Prior art date
Application number
SU782574078A
Other languages
Russian (ru)
Inventor
Александр Семенович Енин
Original Assignee
Ульяновский политехнический институт
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 Ульяновский политехнический институт filed Critical Ульяновский политехнический институт
Priority to SU782574078A priority Critical patent/SU665360A1/en
Application granted granted Critical
Publication of SU665360A1 publication Critical patent/SU665360A1/en

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Landscapes

  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Control Of Voltage And Current In General (AREA)

Description

зователей 1 тока в напр жение следует применить преобразователи напр жени  в напр жение.Current to voltage pickups 1 should use voltage to voltage converters.

Работает устройство следующим образом .The device works as follows.

С выходов преобразователей 1 сигналы подаютс  на входы усилител  2 через четырехполюсники 3. Если в защищаемой установке возникает несимметричный режим , то он сопровождаетс  по влением соответствующей симметричной составл ющей (например, при коротких замыкани х , св занных с землей, характерной особенностью  вл етс  наличие симметричной составл ющей нулевой последовательности ). До тех пор пока значение контролируемой составл ющей не -превосходит значени  уставки, напр жение на выходе усилител  2 равно нулю, так как равно нулю сопротивление петли обратной св зи усилител  2 благодар  соответствующему включению диода 5. Если же значение контролируемой симметричной составл ющей превосходит значение уставки, то в полупериоды, когда симметрична  составл юща  противоположна по знаку напр жению уставки, на выходе усилител  2 по вл етс  напр жение , величина которого регулируетс  при помощи блока регулировани  уровн  ограничени . Это напр жение отпирает тиристор выходного блока 7, что обеспечивает проведение оперативных переключений.From the outputs of the transducers 1, signals are fed to the inputs of amplifier 2 through quadrupoles 3. If an asymmetrical mode occurs in the protected installation, it is accompanied by the appearance of a corresponding symmetrical component (for example, during short circuits connected to ground, a characteristic feature is the presence of zero sequence component). As long as the value of the monitored component does not exceed the value of the setpoint, the voltage at the output of amplifier 2 is zero, since the resistance of the feedback loop of amplifier 2 is zero due to the corresponding switching on of diode 5. If the value of the monitored symmetric component exceeds the value of , then in half-periods, when the symmetrical component is opposite in sign to the voltage of the setpoint, a voltage appears at the output of the amplifier 2, the value of which is regulated by the level control unit extra restrictions. This voltage unlocks the thyristor of the output unit 7, which ensures the conduct of operational switching.

Реле выполн етс  на одном усилителе, что снижает его стоимость.The relay is performed on a single amplifier, which reduces its cost.

Claims (2)

1.Авторское свидетельство СССР № 544011, кл. Н 01 Н 83/20, 1976.1. USSR author's certificate number 544011, cl. H 01 H 83/20, 1976. 2.Ванин В. К., Енин А. С. Синтез активных фильтров симметричных составл ющих. «Электричество, 1974, № 8, с. 21, рис. 4.2.Vanin V.K., Enin A.S. Synthesis of active filters of symmetric components. “Electricity, 1974, No. 8, p. 21, Fig. four.
SU782574078A 1978-01-23 1978-01-23 Current symmetric component relay SU665360A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU782574078A SU665360A1 (en) 1978-01-23 1978-01-23 Current symmetric component relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU782574078A SU665360A1 (en) 1978-01-23 1978-01-23 Current symmetric component relay

Publications (1)

Publication Number Publication Date
SU665360A1 true SU665360A1 (en) 1979-05-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU782574078A SU665360A1 (en) 1978-01-23 1978-01-23 Current symmetric component relay

Country Status (1)

Country Link
SU (1) SU665360A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4443854A (en) * 1981-06-08 1984-04-17 Electric Power Research Institute, Inc. Current sensor responsive to symmetrical and asymmetrical currents and current limiting protector utilizing same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4443854A (en) * 1981-06-08 1984-04-17 Electric Power Research Institute, Inc. Current sensor responsive to symmetrical and asymmetrical currents and current limiting protector utilizing same

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