Abstract
The paper introduce the development and on-line application about the fault diagnosis system based on practicability at dispatching centre. The system can diagnosis fault and allocate faulty device according to the data provided by the grid operation parameters, operation status data, alarm information integrated data platform, combined with the empirical data provided by standard knowledge base. The paper introduce the scheme and realization of the main function module of fault diagnosis system. Analysis on actual operation shows that each fault diagnosis module has good operation diagnosis to diagnose fault and locate fault equipment real-time. The system has good application value.