线路距离保护Ⅲ段定值整定计算探讨  

Discussion on Setting Value Calculation of Distance Protection Section Ⅲ of Transmission Line

作　　者：房亚囡 龚仁敏 王新花 FANG Yanan;GONG Renmin;WANG Xinhua(National Grid Tianjin Electric Power Company,Tianjin 300010,China;Beijing Join Bright Digital Power Technology Co.,Ltd.,Beijing 100085,China)

机构地区：[1]国家电网天津电力公司,天津300010 [2]北京中恒博瑞数字电力科技有限公司,北京100085

出　　处：《广西电力》2018年第3期51-56,共6页Guangxi Electric Power

摘　　要：探讨线路距离保护Ⅲ段定值整定方法,以解决距离保护Ⅲ段在现场整定中遇到的躲负荷与保灵敏度的矛盾问题。分析了常见的距离保护继电器动作特性,基于相关整定运行规程给出了不同电压等级线路距离保护Ⅲ段定值整定计算方案。该方法已应用到实际整定计算案例中,实际运行证明该方法正确可行。The setting value calculation method of distance protection section III of transmission line is discussed to solve the problem of the contradiction between the load avoiding and the sensitivity during the field setting value calculation of distance protection section III. Action characteristics of common distance protection relays are analyzed. Setting value calculation schemes of distance protection section III of various voltage degree transmission lines are given based on relevant setting guides. The method has been applied in practical setting calculation cases and practical operation proves that the method is correct and feasible.

关 键 词：距离保护Ⅲ段 定值整定 阻抗特性 负荷阻抗 

分 类 号：TM773[电气工程—电力系统及自动化]