Abstract:
Based on wide application of digital Instrument and Control System(I&C) in nuclear power plants,the paper presents how to verify the electromagnetic compatibility(EMC) of digital I&C,and how to improve the EMC of digital I&C.After analyzing the disturbance of I&C in nuclear power plant environment,the paper firstly puts forward the correlative standards and test methods,and then based on the application in a NPP,it describes the synthetical methods to improve the EMC of digital I&C during product and engineering design,such as electromagnetic protection,interference filter,electromagnetic shielding,fault isolation,fault-tolerance design,and environment reforming.