Hybrid Approach For Fault Diagnosis Of Nuclear Power Plant

Fault diagnosis technology has brought great importance in the nuclear power plantbecause the application of fault diagnosis system could reduce the damage of nuclear accidentand enhance the reliability of operation. The goal of this thesis is to develop an effective Faultdiagnosis system.The thesis has been studied for the following aspects:(1) Based on the results of existing research, a study of the fundamental structures andfunctions of the equipment in the nuclear power plant primary coolant system and a analysisof the main monitoring parameters and fault spread mechanisms of the important equipmentshave been made to build a knowledge database for the typical fault, which is utilized as thediagnosis objection of the whole fault diagnosis system.(2) By comparing several theories, model and algorithm which are widely used matureintelligent fault diagnosis technology, choose a proper method that is suitable for theoperation parameters and the characters of the typical faults as the main method of the system.(3) Make research of multiple-fault data.(4) Different fault diagnose technology are introduced and the fault diagnose system ofhybrid approach for fault diagnosis of nuclear power plant is built. And the fault diagnosesystem realized the function of single fault diagnose and multiple fault diagnose.(5) Visual Basic6.0is adopted to develop the fault diagnosis system and the simulationdata is used for testing.Different fault diagnose technologies are adapted in the fault diagnose system. to realizedsingle fault diagnose task and multiple fault diagnose task. The diagnose strategy isinnovative and the work of thesis lay a solid foundation for the future work.