Electric Railway Substation Diagnosis With Model-based Method

Most of the diagnosis systems used in electric railway substation are expert systems based on experiences,which can not diagnose the faults beyond experiences and are very difficult for system transplanting and maintaining.A method of model-based diagnosis was proposed to diagnose the electric equipments in railway substation.The system model knowledge can be obtained at the design phase of railway substations.The minimal conflict set candidate was introduced,and model-based diagnosis method was adopted for the main electrical devices diagnosis of railway substation.Finally,an example of actual autotransformer railway substation was presented to verify the feasibility and validity of this method through modeling,programming and testing.