Study Of Fault Diagnosis Expert System For Ferroresonance Of Enterprise's Power Network

In this paper, the ferroresonance in 35kV power network of DeXing Copper Mine power factory is studied. Because the network structure is complicated and there are many factors result in ferroresonance, the effective measures have not been found. In this paper, the factors result in ferroresonance are discussed through theory analysis , ferroresonances that took place during the operational process are diagnosised through expert system, the measures of preventing and eliminating the ferroreonance are put forword.In this paper, the charactistic of ferroresonance and the factors result in ferroresonance are analysed. Based on that, the causality of PT saturation result in ferroresonance is discussed and arborescent knowledge model is established. The system adopt a way of knowledge expression based on fuzzy creation way of rule because of the uncertainty of fault phenomenon, adopt positive inference control policy in inference module, apply the technology of the ER database to establish the database and solve the problem of the interface between the system and the database to realize the replanting of the system. In the programming course of a large number of data transmission between Kingview and user database system, the problem that low efficiency of program was solved. At last, the system apply the object-oriented technology to realize the system module based on the plant combined with Windows 2000Server, Visual C++å'Œ Microsoft SQL Server2000.