SU815839A2 - Device for limiting short-circuiting current at high-voltage substation - Google Patents
Device for limiting short-circuiting current at high-voltage substation Download PDFInfo
- Publication number
- SU815839A2 SU815839A2 SU752704925A SU2704925A SU815839A2 SU 815839 A2 SU815839 A2 SU 815839A2 SU 752704925 A SU752704925 A SU 752704925A SU 2704925 A SU2704925 A SU 2704925A SU 815839 A2 SU815839 A2 SU 815839A2
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- limiting short
- voltage substation
- voltage
- circuiting current
- reactors
- Prior art date
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- Emergency Protection Circuit Devices (AREA)
Description
Изобретение относитс к электротехнике в частности к высоковольтным подстанци м высокого напр жени , где необходимо ограничение токов короткого замыкани .The invention relates to electrical engineering, in particular, to high-voltage, high-voltage substations, where it is necessary to limit short-circuit currents.
По основному авт. св. № 595826 известно устройство дл ограничени тока короткого замыкани на высоковольтной подстанции , имеющее трансформатор с заземленной нейтралью и с обмотками низкого напр жени , объединенными в треугольник, содержащее три реактора, каждый из которых включен последовательно с обмотками низкого напр жени трансформатора 1.According to the main author. St. No. 595826, a device for limiting a short circuit current to a high voltage substation is known, having a transformer with a grounded neutral and low voltage windings connected in a triangle containing three reactors, each of which is connected in series with the low voltage windings of a transformer 1.
Однако в нормальном режиме работы, при питании потребител через реакторы, в последних происходит значительна потер напр жени , а сопротивление нулевой последовательности недостаточно велико и эффективность ограничени токов короткого замыкани низка.However, in normal operation, when the consumer is fed through reactors, in the latter there is a significant loss of voltage, and the resistance of the zero sequence is not large enough and the effectiveness of limiting short circuit currents is low.
Целью изобретени вл етс повыщение эффективности работы устройства путем оптимизации сопротивлени нулевой последовательности.The aim of the invention is to increase the efficiency of the device by optimizing the zero-sequence resistance.
Цель достигаетс тем, что устройство дл ограничени тока короткого замыкани The goal is achieved by the fact that the device for limiting short circuit current
на высоковольтной подстанции снабжено дополнительной обмоткой с подключенным к ней регулируемым сопротивлением, размещенной на общем дл всех реакторов магнитозамкнутом серд ечнике.at the high-voltage substation, it is equipped with an additional winding with an adjustable resistance connected to it, placed on a magnetically closed core common to all reactors.
На чертеже изображено предлагаемое устройство .The drawing shows the proposed device.
Устройство содержит трансформатор I с первичной обмоткой 2 и вторичной обмоткой 3, соединенной в треугольник через обмотку реакторов 4, выполненных на общем магнитозамкнутом сердечнике 5, который имеет дополнительную обмотку 6 с подключенным к ней перел енным резистором 7. Трансформатор 1 подсоединен к щинам высокого напр жени , а реакторы соедунены с потребителем 9.The device contains a transformer I with a primary winding 2 and a secondary winding 3, connected in delta through the winding of reactors 4, made on a common magnetically closed core 5, which has an additional winding 6 with connected transistor 7 connected to it. Transformer 1 is connected to high voltage wiring , and the reactors are connected to the consumer 9.
Устройство работает следующим образом .The device works as follows.
Благодар обмотке 6 с регулируемым резистором 7 на магнитопроводе можно значительно увеличить сопротивление нулевой последовательности подстанции при сохранении небольщого сопротивлени пр мой последовательности, что позвол ет уменьщить величину токов короткого замыкани By winding 6 with an adjustable resistor 7 on the magnetic core, it is possible to significantly increase the zero sequence resistance of the substation while maintaining a small resistance of the direct sequence, which allows reducing the magnitude of short circuit currents
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU752704925A SU815839A2 (en) | 1975-01-03 | 1975-01-03 | Device for limiting short-circuiting current at high-voltage substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU752704925A SU815839A2 (en) | 1975-01-03 | 1975-01-03 | Device for limiting short-circuiting current at high-voltage substation |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU595826 Addition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU815839A2 true SU815839A2 (en) | 1981-03-23 |
Family
ID=20802004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU752704925A SU815839A2 (en) | 1975-01-03 | 1975-01-03 | Device for limiting short-circuiting current at high-voltage substation |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU815839A2 (en) |
-
1975
- 1975-01-03 SU SU752704925A patent/SU815839A2/en active
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