发电厂400 V厂用电系统保护配置方法探讨  

Discussion on Protection Configuration Method of 400 V Auxiliary System in Power Plant

作　　者：庞子亮 Pang Zi-liang

机构地区：[1]河北建投宣化热电有限责任公司,河北张家口075000

出　　处：《电力系统装备》2021年第16期102-103,共2页Electric Power System Equipment

摘　　要：文章针对发电厂400 V厂用电系统保护配置存在的缺陷,特别是单相故障时普遍有越级动作的情况进行分析,为使机组更加安全经济的运行,对以上问题提出几种可能的解决方案并进行深入探讨,从中找出一种经济实用的方案供大家参考。The article analyzes the defects in the protection configuration of the 400 V auxiliary system of the power plant,especially the general leapfrog operation when a single-phase fault occurs.In order to make the unit operate more safely and economically,several possible solutions are proposed for the above problems.Conduct an in-depth discussion and find an economical and practical plan for your reference.

关 键 词：接地保护 相电流保护 越级动作 区域选择性联锁(ZSI) 

分 类 号：TM621[电气工程—电力系统及自动化]