电力系统自动化2013，Vol.37Issue(4)：104-107,4.DOI:10.7500/AEPS201111159
不依赖注入式原理的定子单相接地故障定位方法
Location Method for Stator Single-phase Ground Fault Independent of Injection Type Principle
陈俊 1刘梓洪 2王明溪 1严伟 1沈全荣1
作者信息
- 1. 南京南瑞继保电气有限公司,江苏省南京市211102
- 2. 江苏省电力设计院,江苏省南京市211102
- 折叠
摘要
Abstract
A new location method for stator single-phase ground fault of a generator is proposed, in which neutral-point of the generator is grounded via the distribution transformer secondary winding with a high resistor.It can be used as qualitative guidance for earth fault searching.The ground fault phase can be easily judged with the characteristic of generator three-phase terminal voltage after stator single-phase ground fault.Expressing generator three-phase terminal voltage with fault phase electric motive force, and through comparing three-phase voltage square difference, stator ground fault transient resistance and ground fault location can be calculated.The proposed method is simple and independent of voltage injection type stator ground fault protection, therefore, it is simple and easy to popularize.Actual recording data on site show that the method is correct.关键词
故障定位/注入式定子接地保护/定子接地故障/接地过渡电阻/发电机Key words
fault location/ injection type stator ground fault protection/ stator ground fault/ grounding transient resistance/ generator引用本文复制引用
陈俊,刘梓洪,王明溪,严伟,沈全荣..不依赖注入式原理的定子单相接地故障定位方法[J].电力系统自动化,2013,37(4):104-107,4.
