SU131394A1 - Grid protection device against short-circuit current at traction substations - Google Patents

Grid protection device against short-circuit current at traction substations

Info

Publication number
SU131394A1
SU131394A1 SU643206A SU643206A SU131394A1 SU 131394 A1 SU131394 A1 SU 131394A1 SU 643206 A SU643206 A SU 643206A SU 643206 A SU643206 A SU 643206A SU 131394 A1 SU131394 A1 SU 131394A1
Authority
SU
USSR - Soviet Union
Prior art keywords
protection device
circuit current
grid protection
device against
against short
Prior art date
Application number
SU643206A
Other languages
Russian (ru)
Inventor
С.Д. Соколов
Original Assignee
С.Д. Соколов
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 С.Д. Соколов filed Critical С.Д. Соколов
Priority to SU643206A priority Critical patent/SU131394A1/en
Application granted granted Critical
Publication of SU131394A1 publication Critical patent/SU131394A1/en

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Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Protection Of Static Devices (AREA)

Description

Насто щее изобретение относитс  к устройствам дл  сеточной защиты от токов при коротких замыкани х на т говых подстанци х, состо щим из датчика импульсов, триггера с одним устойчивым состо нием и отдельного дл  каждого из вентилей трансформатора с блоком запирани .The present invention relates to devices for grid protection against currents during short circuits at traction substations, consisting of a pulse sensor, a trigger with one steady state and a separate for each of the valves of a transformer with a locking unit.

Предлагаемое устройство отличаетс  от известных тем, что в качестве датчика импульсов применен установленный на шинах сглаживающего устройства т говой подстанции тороидальный датчик с двум  обмотками - подмагничивани  и выходной, реагирующий на ток разр да емкостей сглаживающего устройства через место короткого замыкани ;The proposed device differs from those known in that a pulsed substation toroidal sensor installed on the smoothing device tires is a two-winding toroidal sensor - bias and output, which reacts to the discharge current of the smoothing device through a short circuit;

Такое выполнение устройства позвол ет осуществить запуск схемы сеточной защиты в момент возникновени  короткого замыкани  и приводит к существенному ограничению величины тока короткого замыкани .Such an embodiment of the device allows the launch of the grid protection circuit at the time of the occurrence of a short circuit and leads to a significant limitation of the magnitude of the short circuit current.

На чертеже изображена схема предлагаемого устройства.The drawing shows a diagram of the proposed device.

Устройство содержит датчик 1, триггер 2 с одним устойчивым состо нием , импульсный трансформатор 3 и блок 4 запирани  ртутных выпр мителей .The device contains a sensor 1, a trigger 2 with one steady state, a pulse transformer 3 and a block 4 that locks the mercury rectifiers.

Датчик / дает импульс напр жени  на запуск схемы сеточной защиты в момент возникновени  глухого короткого замыкани  вблизи подстанции (на рассто ни х до 4-5 км). Он устанавливаетс  на подвод щих щинах сглаживающего устройства и представл ет собой тороид с двум  обмотками: подмагничивани  5 и выходной 6. При коротких замыкани х вблизи подстанции ток, проход щий через место короткого замыкани , отличаетс  от тока, протекающего через ртутный вынр митель , вследствие разр да емкостей сглаживающего устройства. Ток этого разр да обычно составл ет 500-1500 а и используетс  дл  запуска схе мы защиты. При включении агрегатов т говой подстанции возникает ток зар да емкостей сглаживающего устройства, направление которого противоположно току разр да; поэтому на выходной обмотке датчика 1 никакого импульса напр жени  не возникает.The sensor / gives an impulse of voltage to start the grid protection circuit at the moment of the occurrence of a deaf short circuit near the substation (at distances up to 4-5 km). It is installed on the supplying smoothing device and is a toroid with two windings: magnetizing 5 and output 6. At short circuits near the substation, the current passing through the short circuit is different from the current flowing through the mercury tuner. yes tanks smoothing device. The current of this discharge is typically 500-1500 a and is used to start the protection circuit. When switching on the units of a traction substation, a charge current of the smoothing device capacitance arises, the direction of which is opposite to the discharge current; therefore, no voltage pulse occurs on the output winding of sensor 1.

SU643206A 1959-11-05 1959-11-05 Grid protection device against short-circuit current at traction substations SU131394A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU643206A SU131394A1 (en) 1959-11-05 1959-11-05 Grid protection device against short-circuit current at traction substations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU643206A SU131394A1 (en) 1959-11-05 1959-11-05 Grid protection device against short-circuit current at traction substations

Publications (1)

Publication Number Publication Date
SU131394A1 true SU131394A1 (en) 1959-11-30

Family

ID=48402469

Family Applications (1)

Application Number Title Priority Date Filing Date
SU643206A SU131394A1 (en) 1959-11-05 1959-11-05 Grid protection device against short-circuit current at traction substations

Country Status (1)

Country Link
SU (1) SU131394A1 (en)

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