Substation override trip prevention self-adaptive protection system based on rapid message response

Abstract

The invention relates to the technical field of power system automation, in particular to a transformer substation override trip prevention self-adaptive protection system based on quick message response. The system comprises a modeling networking module, a message transmission module, a message guarantee module, a data exchange module and a self-adaptive protection module, high-speed communication between intelligent electronic equipment is realized by utilizing GOOSE multicast characteristics, and millisecond-level message transmission is ensured through a rapid retransmission and comparison mechanism of heartbeat messages and displacement messages. The adaptive protection module dynamically adjusts protection logic and interlocking strategies according to real-time data, fault prediction and optimization are carried out by adopting a graph neural network and a long-short-term memory network model, an override trip event is effectively prevented, and the operation stability of a power grid is improved. The method has the beneficial effects that millisecond-level data transmission is realized, timely and accurate protection action is ensured, the operation and maintenance cost is reduced, and a guarantee is provided for safe and efficient operation of the transformer substation.

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