RCS-985发变组变斜率差动保护的校验  

Verification Method for Variable Slope Differential Protection of RCS-985 Generator Transformer Unit

作　　者：吴小梦 WU Xiaomeng(Huaneng Hainan Power Generation Co.,Ltd.,Haikou 570001,Hainan Province,China)

机构地区：[1]华能海南发电股份有限公司

出　　处：《电力安全技术》2019年第11期59-64,共6页Electric Safety Technology

摘　　要：介绍了RCS-985发变组差动保护的原理、变斜率差动方程中支路电流的计算公式、差动保护接线及校验方法。同时,利用EXCEL电子表格的公式计算及绘图功能,自动计算变斜率差动保护校验所需的各变量,并绘出标准动作曲线图。利用制作好的电子表格进行保护校验,可大大简化计算过程,提了RCS-985变斜率差动保护校验的质量和效率。This paper introduces the principle of RCS-985 generator transformer differential protection,the calculation formula of branch current in the differential equation of variable slope,the connection and verification method of differential protection.It also introduces how to use the formula calculation and drawing function of Excel electronic form to automatically calculate the variables required for the verification of variable slope differential protection,and draw the standard action curves.By use of the developed electronic forms,the protection verification calculation is greatly simplified and the quality and efficiency of RCS-985 variable slope differential protection verification are improved.

关 键 词：变斜率差动保护 差动电流 制动电流 边界动作曲线 

分 类 号：TM835[电气工程—高电压与绝缘技术]