BREAKDOWN FAULT ANALYSIS OF HIGH PRESSURE HEATER IN SUB-CRITICAL 600 MW GENERATING UNIT

This paper analyzes two breakdown faults of the high pressure heater in a sub-critical 600 MW generating unit of Shaanxi Guohua Jinjie Energy Co.Ltd.,and suggests adopting serial three-impulse control scheme as this breakdown fault happens.This serial three-impulse control scheme is more effective compared with the Siemens' single-level three-impulse scheme.In addition,a method for preventing this fault is proposed.