火力发电厂主辅机设备“单点保护”可靠性提升研究

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［摘要］通过从增加两台机组重要辅机冗余保护测点，优化重要辅机单点保护控制逻辑；独立开列采用同一根电缆的多个主保护测点及信号电缆；重新分配在同一块卡件、同一个支线的保护测点等措施，2021年中煤哈密发电有限公司主辅机设备热工保护可靠性得到持续提升，为机组的安全稳定运行保驾护航。

［关键词］保护；可靠性；优化；冗余；单点保护

［中图分类号］TM621.7［文献标志码］A［文章编号］1001-523X （2022）08-0100-03

Reliability Improvement of "Single Point Protection" of Main and Auxiliary Equipment in Thermal Power Plants

Zhang Guo-kun，Dong Li-jiang

[Abstract]By adding redundant protection measuring points of important auxiliary machines of two units，the singlepoint protection control logic of important auxiliary machines is optimized；multiple main protection measuring points and signal cables using the same cable are listed independently；In 2021，the reliability of thermal protection of the main and auxiliary equipment of China Coal Hami Power Generation Co.，Ltd. will be continuously improved，escorting the safe and stable operation of the unit.

[Keywords]protection；reliability；optimization；redundancy；single point protection

1概述

热控系统的可靠性不高最直接的体现就是保护误动与拒动。（剩余4116字）