内蒙古电力技术2015，Vol.33Issue(6)：79-81,85,4.DOI:10.3969/j.issn.1008-6218.2015.06.015
10 kV配电网中中性点接地电阻柜保护误动原因分析与解决措施
False Protection Analysis of Neutral Point Grounding Resistance Cabinet in 10 kV Distribution Network and Its Treatment
王亮1
作者信息
- 1. 鄂尔多斯电业局,内蒙古 卾尔多斯 017010
- 折叠
摘要
Abstract
The application of neutral point grounding resistance cabinet can realize the zero sequence current protection configuration of 10 kV distribution network and fault trip, but due to the application of immature technology, it could easily lead to protection malfunction accident. Through the analysis of the multiple protection malfunction occurred during the operation of the 110 kV substation neutral grounding resistor cabinet within Ordos grid, the main causes are the error of the zero sequence TA measurement, the error of the cable shield to the ground wire and the error of the 10 kV feeder switch protection malfunction, etc., and formulate the corresponding solution measures, so as to achieve the effective application and management of neutral point grounding resistance cabinet in 10 kV distribution network.关键词
10kV配电网/中性点接地电阻柜/零序电流保护/零序TA/10kV馈线开关/电缆屏蔽层接地线Key words
10 kV distribution network/neutral point grounding resistance cabinet/zero sequence current protection/zero sequence TA/10 kV feeder switch/cable shield ground wire分类
动力与电气工程引用本文复制引用
王亮..10 kV配电网中中性点接地电阻柜保护误动原因分析与解决措施[J].内蒙古电力技术,2015,33(6):79-81,85,4.
