35 kV电容器组分相差压保护动作原因分析及改进建议  

Reason Analysis and Improvement Suggestion of Phase Differential Pressure Protection Action for 35 kV Capacitor Components

作　　者：舒越 张连聪 杨汉松 张际明 刘明辉 朱江 苏阳 杨华昆 李亚权 李胜朋 李秀明 周新锐 Shu Yue;Zhang Liancong;Yang Hansong;Zhang Jiming;Liu Minghui;Zhu Jiang;Su Yang;Yang Huakun;Li Yaquan;Li Shengpeng;Li Xiuming;Zhou Xinrui(Baoshan Power Supply Bureau,Yunnan Power Grid Co.,Ltd.,Baoshan 678000,China)

机构地区：[1]云南电网有限责任公司保山供电局,云南保山678000

出　　处：《云南电力技术》2022年第5期60-61,66,共3页Yunnan Electric Power

摘　　要：通过实际算例分析了一起220 kV变电站35 kV电容器组分相差压保护动作的原因,提出了一种新的分析思路,并对电容器组分相差压保护定值设置和预防性试验提出了改进建议。通过文中介绍的方法可有效提高电容器组差压保护动作的准确性,降低电容量在正常变化范围内引起差压保护误动作的可能性。This paper analyzes the reasons for the differential voltage protection of 35 kV capacitor components in a 220 kV substation through a practical example,puts forward a new analysis idea,and puts forward improvement Suggestions for the setting of the fixed value of differential voltage protection of capacitor components and the preventive test.The method introduced in this paper can effectively improve the accuracy of differential voltage protection of capacitor bank and reduce the possibility of differential voltage protection misoperation caused by capacitance in the normal range.

关 键 词：35 kV电容器组 差压保护 电容量 

分 类 号：TM74[电气工程—电力系统及自动化]