摘要
结合火电厂的实际情况 ,确定了热工控制系统中的故障诊断对象、常见故障类型和故障诊断方法 ;对系统中重要传感器、执行器的常见故障提出了基于信号分析和数据统计的诊断方法。以某 3 0 0MW机组过热汽温控制系统为例 ,对传感器的断线、增益、偏差和超速等故障以及执行器的卡死、滞环、粘滞滑动等故障的诊断进行研究 。
Combined with actual situation in thermal power plants, the objects for fault types, and fault diagnosis methods in thermotechnic control system for thermal power plants have been determined, the diagnosis methods based on signal analysis and data statistics being put forward for important sensors and actuators in the said system. Taking the superheat steam temperature control system of a 300MW unit as example, the diagnosis methods for breakage, gain, deviation, and overspeed faults of the sensors, as well as jam, hysteresisloop, and stickslip faults of the actuators have been studied. Finally, two fault diagnosis examples are given, the field diagnosis results show that the fault diagnosis methods recommended in this paper to be practical and feasible.
出处
《热力发电》
CAS
北大核心
2004年第11期47-50,共4页
Thermal Power Generation
基金
湖南省电力公司科技项目 (943Y2 0 0 30 2 3)
关键词
火电厂
热工控制
故障诊断
传感器
执行器
过热汽温
thermal power plant
thermotechnic control system
fault diagnosis
sensor
actuator
