Simulation And Assessment Of 6kV Medium Voltage System

This athesis emphasizes on the configuration of the whole electrical of nuclear plant internal system, including 6kV medium voltage busbar system of LGA,LGB,LGC,LGD,LHA,LHB,LGR,LHT, low voltage and direct current system as well as description of 220kV anxilliary power supply. Through analysis the Loss of PX building lighting is chosen to be top event of fault tree.There are five possible power supply mode: generator power supply, 220kV power supply,emergency diesel generator operation,LLS power supply,the 5th emergency diesel generator power supply. With status machine technoledge it analyzes fault reason of the power supply system, and simulates the actual operation.With the help of LABVIEW software and the technoledge of fault anlysis, through assuming important fault the fault tree is built up and caculated by cutest Fussell-Vesely. As a result it gives the proof of system configuration realibilites and stabilities to show the safety design of nuclear plant.Furthermore it could be the mothod of assess and analyze of future plant possibilities.