SU96285A1 - Device for differential protection of transformers, synchronous machines and parallel lines - Google Patents
Device for differential protection of transformers, synchronous machines and parallel linesInfo
- Publication number
- SU96285A1 SU96285A1 SU434822A SU434822A SU96285A1 SU 96285 A1 SU96285 A1 SU 96285A1 SU 434822 A SU434822 A SU 434822A SU 434822 A SU434822 A SU 434822A SU 96285 A1 SU96285 A1 SU 96285A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- transformers
- parallel lines
- differential protection
- synchronous machines
- current
- Prior art date
Links
Landscapes
- Protection Of Transformers (AREA)
Description
Предлагаетс устройство дл дифференциальной защиты трансформаторов , синхронных машин и параллельных линий, в котором дл обеспечени тормозного действи при внешних повреждени х примен етс насыш,аюшийс трансформатор, включенный между трансформаторами тока и исполнительным реле.A device for differential protection of transformers, synchronous machines and parallel lines is proposed, in which a braking transformer connected between the current transformers and the executive relay is used to ensure braking action for external damage.
Предлагаемое устройство по сравнению с известными устройствами того же назначени обладает лучптими характеристиками, а его электрическа схема более проста.The proposed device, in comparison with the known devices of the same designation, has luchptimi characteristics, and its electrical circuit is simpler.
Это достигаетс тем, что в предлагаемом устройстве в цепь, обтекаемую переменным током внешнего повреждени , включены две обмотки трансформатора, расположенные на крайних стержн х и действуюш ,ие согласно; в ветвь, обтекаемую переменным током внутреннего повреждени , включены две другие обмотки, также расположенные на крайних стержн х, но действующие встречно, а к обмотке на среднем стерх не подключено исполнительное .This is achieved by the fact that, in the proposed device, two windings of the transformer located on the outermost rods and act in accordance with the external current-damaged alternating current circuit; In the branch, streamlined by alternating current of internal damage, two other windings are included, also located on the outermost rods, but acting opposite, and an actuator is not connected to the winding on the middle crane.
На фиг. 1 представлена принципиальна электрическа схема г:редлагаемого устройства; на фиг. 2-ее видоизменение.FIG. 1 is a schematic electrical diagram of a g: device to be offered; in fig. 2nd modification.
Цифрами обозначены: и 2 трансформаторы тока, 3 и 4-обмотки трансформатора, обтекаемые переменным током внешнего повреждени , 5 и 6-обмотки, обтекаемые переменным током внутреннего повреждени , 7-вторична обмотка трансформатора, к которой подключаетс pe./ie 8, 9-Ш-образный сердечник.The numbers indicate: and 2 current transformers, 3 and 4 windings of the transformer, flowed by alternating current external damage, 5 and 6 windings, flown by alternating current internal damage, 7 secondary winding of the transformer, to which pe./ie 8, 9- W-shaped core.
Как видно из схемы, показанной на фиг. 1, при внешних повреждени х ток. текущий от трансформаторов 1 и 2 тока, намагничивает сердечник 9 трансформатора, не вызыва возникновени тока в обмотке . При этом уменьшаетс величина тока небаланса во вторичной обмотке 7 и обмотке реле, т. е. возникает тормозное действие защиты.As can be seen from the diagram shown in FIG. 1, with external damage current. the current from the current transformers 1 and 2 magnetizes the transformer core 9 without causing a current in the winding. In this case, the magnitude of the unbalance current in the secondary winding 7 and the relay winding decreases, i.e. a braking action of the protection occurs.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU434822A SU96285A1 (en) | 1950-09-18 | 1950-09-18 | Device for differential protection of transformers, synchronous machines and parallel lines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU434822A SU96285A1 (en) | 1950-09-18 | 1950-09-18 | Device for differential protection of transformers, synchronous machines and parallel lines |
Publications (1)
Publication Number | Publication Date |
---|---|
SU96285A1 true SU96285A1 (en) | 1952-11-30 |
Family
ID=48371169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU434822A SU96285A1 (en) | 1950-09-18 | 1950-09-18 | Device for differential protection of transformers, synchronous machines and parallel lines |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU96285A1 (en) |
-
1950
- 1950-09-18 SU SU434822A patent/SU96285A1/en active
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