发电厂高压厂用分支限时速断保护的研究  

Study on Time-Limit Quick Break Protection for HV House Branch Bus of Power Plant

作　　者：李锦屏[1] 郭锡玖[2] 李英伟[3] 李悦[3] 聂娟红[4] 屠黎明[4] 

机构地区：[1]华北电力大学电力系统保护与动态安全监控教育部重点实验室,北京市102206 [2]北方联合电力有限责任公司,内蒙古呼和浩特市010020 [3]内蒙古上都发电有限责任公司,内蒙古锡林郭勒市027200 [4]北京四方继保自动化股份有限公司,北京市100085

出　　处：《电力设备》2008年第2期35-38,共4页Electrical Equipment

摘　　要：详细介绍了增设高压厂用分支限时速断保护的意义,并给出了其应用的4个边界条件。指出高压厂用分支母线上的新型负荷对分支限时速断保护的影响(为变频器和软启动对电动机速断保护的影响),并将分支限时速断保护与电弧光保护进行了比较分析,比较表明,从经济性和实用性而言,装设分支限时速断保护是一种更为优越的保护方案。This paper presented the meaning of adding time-limit quick break protection at the branches of the high voltage house substation in detail, and also deduced the boundary conditions for its application. It also indicates that time-limit quick break protection could be influenced by the new type load at medium and low voltage bus, and then compares the time-limit quick break protection with the electric arc protection. The comparison results show that the time-limit quick break protection is an excellent protection scheme from the point of view of economy and practical use.

关 键 词：厂用分支 母线保护 限时速断保护 电弧光保护 发电厂 

分 类 号：TM772[电气工程—电力系统及自动化]