调压不当导致主变压器后备保护动作分析  

Analysis of Main Transformer Backup Protection Caused by Improper Implementation of Voltage Regulation Measures

作　　者：罗来龙 王超 陈禹志 徐攀峰 文芳 覃文继 孙晓佳 LUO Lailong;WANG Chao;CHEN Yuzhi;XU Panfeng;WEN Fang;QIN Wenji;SUN Xiaojia(State Grid Tibet Electric Power Co.,Ltd.,Lasa 850000,China;State Grid Tibet Electric Power Co.,Ltd.,Electric Power Hesearch Institute,Lasa 850000,China)

机构地区：[1]国网西藏电力有限公司,西藏拉萨850000 [2]国网西藏电力有限公司电力科学研究院,西藏拉萨850000

出　　处：《湖南电力》2021年第2期78-82,共5页Hunan Electric Power

摘　　要：针对一起调压措施执行不当导致的主变后备保护动作案例,梳理主变分接头档位调节过程,剖析档位调节后主变后备保护误动机理,分析了事故原因,并通过PSCAD对分析结果进行了仿真验证。In view of a case of backup protection of main transformer caused by improper implementation of voltage regulation measures,this paper combs the process of the shift adjustment of main transformer joint,analyzes the mechanism of the backup protection maloperation of main transformer after the shift adjustment,and analyzes the fault causes.At last the results are verified by simulation with PSCAD.

关 键 词：主变并列 电压调节 环流 电磁暂态仿真 

分 类 号：TM772[电气工程—电力系统及自动化]