电力系统保护与控制Issue(19)：62-67,6.
考虑电容电流影响的广域电流差动保护
Wide area current differential protection considering the effects of capacitive current
金恩淑 1陈亚潇 1扈佃爱 1江坤1
作者信息
- 1. 东北电力大学电气工程学院，吉林 吉林 132012
- 折叠
摘要
Abstract
To avoid the circumstances that the maloperation currently occurs when the wide-area current differential protection is influenced by the capacitive current, this paper improves the traditional current differential protection and puts forward a way to calculate the wide-area current differential protection that is not affected by capacitive current. We use differential equation to calculate the capacitive current on different circuits, and by using amendatory differential current, we make efficient compensation for fault transient current and steady capacitive current. That is to guarantee current differential protection against the influence from capacitive current, we subtract the calculated capacitive current from the traditional differential current. The PSCAD simulation experiment compares this protection with the traditional current differential protection. It turns out that this protection is not affected by capacitive current, and has no maloperation through external failure, which verifies the feasibility and effectiveness of this protective calculation.关键词
广域电流差动保护/动作电流/制动电流/电容电流/补偿精度Key words
wide-area current differential protection/operating current/braking current/capacitive current/compensation precision分类
信息技术与安全科学引用本文复制引用
金恩淑,陈亚潇,扈佃爱,江坤..考虑电容电流影响的广域电流差动保护[J].电力系统保护与控制,2014,(19):62-67,6.
