给煤机低电压穿越改造后控制电源可靠性分析与优化  

Reliability analysis and optimization of control power supply after low-voltage ride through retrofitcoal feeder

作　　者：袁岑颉 宋振明 钟佳华 戴敏敏 韩峰 YUAN Cen-jie;SONG Zhen-ming;DAI Min-min;HAN Feng(Zhejiang Zhenengjiahua Powes Generation Co.,Ltd,Jiaxing 314201,China;Zhejiang Zheneng Electric Powes Co.,Ltd,Hangzhou 310000,China;Zhejiang Energy Group Research Institute,Hangzhou 310000,China)

机构地区：[1]浙江浙能嘉华发电有限公司,浙江嘉兴314201 [2]浙江浙能电力股份公司,浙江杭州310014 [3]浙江浙能技术研究院,浙江杭州311121

出　　处：《能源工程》2022年第1期16-21,共6页Energy Engineering

摘　　要：给煤机低电压穿越改造后,由于控制器电源未合理配置易导致机组停运。结合两起给煤机控制电源异常的典型故障案例,分析了存在的安全隐患,提出了防范给煤机控制回路继电器失电、控制器重启的两项优化措施,并针对目前各火电企业给煤机低电压穿越改造后,控制电源的各种配置现状,提出了相应的整改建议。In recent years,coal feeder shutdown accidents often took place due to improper configuration of controller power after low-voltage crossing retrofit.Combined with two typical shutdown accidents due to coal feeder control power abnormality,hidden safety dangers were analyzed,and two optimization measures to prevent the power loss of relay in control loop of coal feeder and restart of controller were put forward.In view of the current situation of low-voltage crossing retrofit,some suggestions were put forward.

关 键 词：低电压穿越 给煤机 动力电源 电源切换 UPS 

分 类 号：TM34[电气工程—电机]