油田电力系统小电流单相接地故障选线研究

辽宁石油化工大学学报 ›› 2013, Vol. 33 ›› Issue (2): 67-69.

油田电力系统小电流单相接地故障选线研究

阚哲¹,王晓蕾¹,李庆华²,李成志³

(1.辽宁石油化工大学,辽宁抚顺113001;2.北京市普利门科技有限公司,北京100041;
3.中国石油辽阳石化分公司,辽宁辽阳111003

收稿日期:2012-09-06 出版日期:2013-06-25 发布日期:2017-07-14
作者简介:阚哲(1980-),男,辽宁新民市,博士,讲师
基金资助:
辽宁省教育厅一般项目(L2012126)

Study on Small Current SinglePhase Earth  Fault LineSelection Principle to Oilfield Power System

KAN Zhe¹, WANG Xiaolei¹, LI Qinghua², LI Chengzhi³

1.Liaoning Shihua University, Fushun Liaoning 113001, China; 2.Beijing Puli Door Electronic Technology Limited Company, Beijing 100041, China; 3. China Petroleum Liaoyang Petrifaction Branch Company, Liaoyang Liaoning 111003, China

Received:2012-09-06 Published:2013-06-25 Online:2017-07-14

摘要/Abstract

摘要： 在小电流接地系统中,迅速判定单相接地故障线路是实现配电网保护的关键问题。在分析研究现有
故障选线方法的基础上,提出了利用零序全电流的大小和方向进行故障选线的方法。在此研究的基础上,提出了利
用零序暂态电荷实现故障选线的新方法,此方法适用于主变中性点经消弧线圈接地系统。经计算机仿真验证,此方
法具有选线准确率高、利于微机选线装置实现的优点。

关键词: 小电流接地系统 , 单相接地 , 暂态电荷 , 选线

Abstract: In small current grounding system, determining singlephase grounding fault lines is quick a key question for realizing protection of power distribution net. Studies at the paper as follows was outspreads: a method of malfunction lineselection using the size and direction of zero sequence full current was advanced in neutral point indirect grounding system on the base of studying malfunction lineselection methods. Besides, a new method of lineselection using zero sequence transient electric charges for identifying singlephase grounding fault was put forward. This method is suit for neutral point to the ground via arcsuppression coil system. Computer simulation results indicate that the method has the merit of high lineselection accuracy rate and is propitious to implement microcomputer lineselection devices.

Key words: Small current grounding system , Singlephase earth fault , Transient electriccharges , Lineselection

阚哲,王晓蕾,李庆华,李成志. 油田电力系统小电流单相接地故障选线研究[J]. 辽宁石油化工大学学报, 2013, 33(2): 67-69.

KAN Zhe, WANG Xiaolei, LI Qinghua, LI Chengzhi. Study on Small Current SinglePhase Earth  Fault LineSelection Principle to Oilfield Power System[J]. Journal of Liaoning Petrochemical University, 2013, 33(2): 67-69.