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Combined with the characteristics of smart substation, the power grid fault diagnosis structure of double layer independent decision based on Smart substation-Dispatching center is put forward. Smart substation diagnosis module is designed based on panoramic information platform, through analyzing three-state-data, using the numerical analysis method, the fault equipment is identified, and the fault...
To the requirement of smart fault decision-making, by using the discrete event system structure, the problem analysis system of fault diagnosis in distribution grid is built, analyzing the basic principles , demonstrating the diagnosability and uncertainty in the problem of fault diagnosis, meanwhile putting forward the method of process matching based on the timing sequence and protection differential...
To solve the uncertain problems existing in power grid fault diagnosis, on the base of fault diagnosis expert system based on rules and causal logic, a method of Bayesian statistics inference is proposed in this paper , through the analysis of historical data, the diagnosis system gets a general memory function; meanwhile, introducing case-based reasoning (CBR), establishing a special case library,...
The main current research achievements for power system diagnoses are summarized, a practical power grid fault diagnosis method base on China's power grid actual is proposed in this paper. Through the analysis of the power flow difference between normal operation and fault tripping, a fault equipment confirmed algorithm based on abnormal changes in the structure of power grid is developed, the evaluation...
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