Causes and Treatment of Emergency Shutdown Failure of Thermal Signal Triggered Protection
Combined with the emergency shutdown of protection caused by thermal signal in a power plant of Huadian Group,through fault analysis and inspection,it is found that the accident was caused by the action of"mechanical and hydraulic over-speed of 150%Ne"of No.2 unit protection PLC.The problem is deeply analyzed from three aspects of management factors,technical factors and equipment factors,and then the preventive measures are implemented to ensure the safe and reliable op-eration of equipment.