变压器差动保护比率制动系数校验辅助方法  

Auxiliary Method for Checking Ratio Braking Coefficient of Transformer Differential Protection

作　　者：朱国超 陈姣 ZHU Guochao;CHEN Jiao

机构地区：[1]青海省电力公司检修公司,青海西宁810000

出　　处：《青海电力》2021年第3期54-57,共4页Qinghai Electric Power

摘　　要：阐述了变压器差动保护原理、相位及幅值校正方法,以及现场调试接线方式;在此基础上采用Excel开发出实用的比率制动系数校验程序;并以南瑞继保公司PCS-978保护装置为例,验证了该程序可以提高调试人员工作效率,实际使用效果良好。Explains the principle of transformer differential protection,phase and amplitude correction methods,and on-site debugging and wiring methods;on this basis,a practical ratio braking coefficient calibration program is developed using Excel;and take the PCS-978 protection device as an example,it is verified that the program can improve the work efficiency of the debugger,and the actual use effect is good.

关 键 词：变压器 差动保护 比率制动系数 程序开发 

分 类 号：TM77[电气工程—电力系统及自动化]