电力系统保护与控制2011，Vol.39Issue(21)：55-59,5.
基于虚拟零序电流的双回线接地距离保护原理
A novel scheme of ground distance protection for double circuit line based on virtual zero sequence current
张洋 1王伟 2樊占峰3
作者信息
- 1. 华北水利水电学院,河南郑州450011
- 2. 许继日立公司,河南许昌461000
- 3. 许继电气股份有限公司,河南许昌461000
- 折叠
摘要
Abstract
In this paper, a new scheme using virtual zero sequence current of non-fault line is presented. This scheme can solve the problem that the ground distance relay can not measure the accurate fault distance. Because busbar voltage is influenced by zero current of neighborhood line when ground fault happened in one line of parallel double circuit line or double circuit line on the same tower. Under the condition of no using neighborhood current and extra AC input and connect line, the paper analyzes that this scheme is more adaptive in different faults than the neighboring zero current compensation scheme. The digital simulation result indicates that the scheme can be correctly used in high voltage transmission lines of parallel double circuit line and double circuit line on the same tower.关键词
虚拟零序电流/平行双回线/同杆并架双回线/互感Key words
virtual zero sequence current/two-parallel transmission line/double circuit line on the same tower/mutual inductance分类
信息技术与安全科学引用本文复制引用
张洋,王伟,樊占峰..基于虚拟零序电流的双回线接地距离保护原理[J].电力系统保护与控制,2011,39(21):55-59,5.
