摘要
火电机组热控保护综合优化对于机组安全可靠运行意义重大。通过对江苏阚山电厂保护系统全面的梳理、分析和研究,提出了一种综合优化的保护系统方案,即采用增加三重冗余、辅助点判断和相关系统参照(工艺角度综合考虑)多种手段实施系统、辅机保护控制,不仅在任意部件故障时,保证机组控制系统(分散控制系统,DCS)正确工作,还能在现场测点、辅助接点异常时准确判断重大系统、辅机运行状态。该综合优化保护改造方案全面实施后,机组运行至今未发生热控误动、拒动事件,有效提高了机组保护系统的正确性和可靠性。
Studies on the comprehensive optimization of thermal protection are of great significance for the safe and reliable operation of power plants. Through the overall analysis and studies on the protection system of Jiangsu Kanshan Power Plant, a comprehensive optimization plan is proposed. The plan includes using triple redundancy increasing, auxiliary judgment and related system reference （with the processing course in consideration） to implement system and auxiliary equipment protection control to ensure that the distributed control system （DCS） can not only operate correctly in case of equipment failure, but also determine the operating conditions of the major systems and auxiliary equipments precisely when the measuring points and auxiliary connections are abnormal. Since the plan is fully implemented, there has been no malfunction or failure of the thermal control system, which demonstrates that the correctness and reliability of the unit protection system are effectively improved.
出处
《中国电力》
CSCD
北大核心
2014年第12期17-20,共4页
Electric Power
关键词
火电机组
保护综合优化
研究
实施
thermal generating unit
comprehensive optimization of thermal protection
research
implementation
