A distributed power system fault diagnosis system based on recorded fault datum

This paper proposes a progressive fault diagnosis system based on recorded fault data. It is composed of two parts: substation system analyzes the fault and uploads brief reports to the main station system in the dispatch centre which integrates several substation reports, gives detailed fault diagnosis and operation evaluation of the protective relays and circuit breakers. It can give timely and accurate diagnosis of the fault that greatly relieves the burden of operators. This system is cooperated with East China Electrical Power Dispatching Center. Primary results are achieved and satisfied.