中国电力2017，Vol.50Issue(5)：46-51,6.DOI:10.11930/j.issn.1004-9649.2017.05.046.06
一种自适应的零线断线保护原理与实现
Principle and Implementation of Adaptive Neutral Line Breaking Protection
陈谦慎 1柳春芳 2廖伟文 1陈源2
作者信息
- 1. 广东电网有限责任公司佛山供电局,广东佛山 528000
- 2. 佛山电力设计院有限公司,广东佛山 528000
- 折叠
摘要
Abstract
Neutral line breaking protection mainly uses load voltage and neutral point displacement voltage.The protection setting value needs to greater then maximum load voltage during normal operation,which leads to low protection sensitivity in long and imbalanced transmission lines.In order to solve this problem,an adaptive neutral line disconnection protection is presented.By introducing adaptive coefficient,the protection setting value is adjusted adaptively according to load imbalance during normal operation.The proposed method has good breaking effect during normal operation,and improve protection sensitivity during neutral line disconnection.The simulation model established by Matlab verifies feasibility of proposed protection.关键词
电网/零线断线/负载不对称/自适应/保护Key words
power grid/zero line breaking/load unbalance/adaptive/protection分类
信息技术与安全科学引用本文复制引用
陈谦慎,柳春芳,廖伟文,陈源..一种自适应的零线断线保护原理与实现[J].中国电力,2017,50(5):46-51,6.
