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Protection apparatus using directional overcurrent ground relay and distance relay in grid-connected distributed generation
Protection apparatus using directional overcurrent ground relay and distance relay in grid-connected distributed generation
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机译：使用方向过电流地继电器和距离继电器在网格连接的分布式发电中的保护装置
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摘要
In the protection device of the system in which the distributed power supply of the present invention is linked, the OCR (Overcurrent Relay) located on the grid side of the power supply company in each distribution line and the distributed power supply side in each distribution line, the directional ground fault overcurrent relay and the distance relay Including a blocking section comprising a. At this time, the trip area of the directional ground fault overcurrent relay and the distance relay is set in the same direction. According to the present invention, there is an effect of preventing a malfunction that may occur in the protection relay of another line through the protection device using the directional earth fault overcurrent relay and the distance relay.
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