발전설비 통풍기 날개각 제어작동기 신뢰성평가 모델 개발

This paper describes the proceedings of creating countermeasures after analysis and maintenance to be able to conduct operation safely in a power plant. In order to operate the power plant in a stable and reliable way, the best condition of the governor system can be maintained through the response characteristic analysis of the control device for the pitch blade control hydraulic actuator. The fan pitch blade control hydraulic actuator of a 500㎿ large-scale boiler is frequently operated under normal operation conditions. Common problems or malfunctions of the pitch blade control hydraulic actuators leads to the decline of boiler thermal efficiency and unexpected power plant trip. The inlet and outlet gas can be controlled by using the fan pitch blade control hydraulic actuator in order to regulate the internal pressure of the furnace and control the frequency in the power plant facility which utilizes soft coals as a power source.