电力系统中非对称接地和断线故障分析
Analysis of Asymmetrical Grounding and Line Breaking Faults in Power System
蔡蕾 1王丙东 2王冬梅3
作者信息
- 1. 国网天津市电力公司武清分公司,天津 武清 301700
- 2. 国网河北廊坊供电公司,河北廊坊 065000
- 3. 保定电力职业技术学院,河北 保定 071000
- 折叠
摘要
将对称分量法应用到中性点不接地电网非对称故障分析中,用于计算电网各位置的故障后电流和电压,并首次应用零序序网图解释中性点偏移的物理含义.然后本文系统介绍了中性点接地和不接地电网非对称故障中负序和零序分量的分布问题,最后对接地短路和断线故障进行了对比分析.
Abstract
First of all,the symmetric component method is applied to the asymmetric faults research in neutral ungrounded grid to calculate the after-fault current and voltage,and the physical meaning of neutral point deviation is clearly explained by using zero sequence network.Then,the distribution of negative sequence and zero sequence components in unsymmetrical faults of neutral earthed and ungrounded networks is systematically introduced,and the ground short circuit and disconnection faults are carefully analyzed in comparison.
关键词
非对称故障/接地/断线/中性点偏移Key words
asymmetrical faults/grounding/disconnection faults/neutral point deviation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据