岳阳电厂厂用电切换问题分析及改造

PROBLEMS ANALYSIS & IMPROVEMENT FOR UNIT AUXLIARY SUPPLY TRANSFER OF LARGE TURBOGENERATOR

介绍了华能岳阳电厂厂用电切换方式，分析了切换控制中存在的问题，对厂用电切换方式提出建议；通过改造不但厂用电切换正常，而且实现了厂用电源与起动／备用电源之间的双向切换，互为备用，既保证了设备的安全运行，又便于设备检修。

The unit auxiliary supply transfer modes in huaneng Yueyang Power Plant are presented,the problems of transfer controls are analyzed.Suggestions for Unit auxiliary supply transfer modes are proposed.After taking improvement measures,not only the auxiliary supply can be normally transfered,but also the loads on unit boards or on start up/standbyboards equipments can be fransfered each other,so the machines can run up normally as well as the related equipment can be maintained conveniently.