基于中性点全补偿技术的故障选线现场试验研究Field Test Study on Fault Line Selection Based on Neutral Point Compensation Technology
胡叶舟,张琳,陈欣华,谢成,尤敏,杨勇,顾国强
HU Yezhou,ZHANG Lin,CHEN Xinhua,XIE Cheng,YOU Min,YANG Yong,GU Guoqiang
摘要(Abstract)：
国网浙江省电力有限公司安装投运国内首台GFN设备,通过与消弧线圈相互配合实现对配网单相接地故障电流的全补偿,以达到快速熄弧、故障选线和防止事故扩大的目的。基于配电网实际运行工况对GFN设备功能验证试验进行了设计,通过模拟金属性接地、不同过渡电阻接地、弧光接地、断线接地等多种现场故障,全面验证了GFN设备故障电流全补偿和选线技术的可行性。该设备的投运有助于智能新技术适应性深化应用,提升电网安全运行水平。
The state grid Zhejiang Electric Power Company installed the first GFN(Ground Fault Neutralizer)in China, which in conjunction with arc suppression coil, achieves fast arc blowout, fault line selection and prevents fault expansion by compensation of single earth fault current of distribution networks. In this paper,GFN functional verification test is designed based on the actual operation condition of distribution networks.By simulation on metal grounding, different transition resistance grounding, arc grounding, breakage grounding, feasibility of GFN fault current compensation and line selection technology is verified. The GFN helps to deepen the application of intelligent new technology and improve grid operation safety.
关键词(KeyWords)：
GFN设备;全补偿;单相接地;试验验证
ground fault neutralizer;full compensation;single-phase grounding;test verification
基金项目(Foundation):
作者(Author):
胡叶舟,张琳,陈欣华,谢成,尤敏,杨勇,顾国强
HU Yezhou,ZHANG Lin,CHEN Xinhua,XIE Cheng,YOU Min,YANG Yong,GU Guoqiang
DOI: 10.19585/j.zjdl.201804004
参考文献(References)：
- [1]董振亚.城市配电网中性点接地方式的发展和改进[J].中国电力,1998,31(8):38-41.
- [2]蔡泽祥,周全.配网接线方式对供电可靠性影响分析[J].电力系统及其自动化学报,2010,22(4):85-88.
- [3]李景禄,周羽生.关于配电网中性点接地方式的探讨[J].电力自动化设备,2004,24(8):85-86.
- [4]余卫成,徐剑峰.一起非典型的10 k V母线单相接地故障分析[J].浙江电力,2013,32(1):17-19.
- [5]丁爱佳,鲍炫羽,季玲玲.小电流接地系统单相接地故障选线方法研究[J].浙江电力,2017,36(5):8-11.
- [6]谢成,金涌涛,胡叶舟.基于相关系数分析的配电网单相接地故障研判方法与试验研究[J].浙江电力,2017,36(3):17-23.
- [7]刘健,沈兵兵,赵江河,等.现代配电自动化系统[M].中国水利水电出版社,2013.
- [8]牟龙华.零序电流有功分量方向接地选线保护原理[J].电网技术,1999,23(9):60-62.
- [9]唐艳波.10 k V配电网单相接地电容电流补偿方式的研究[J].电力自动化设备,1999,19(4):52-55.
- [10]要焕年,曹梅月.电力系统谐振接地[M].北京:中国电力出版社,2000.
- [11]曾祥君,尹项根,张哲,等.零序导纳法馈线接地保护的研究[J].中国电机工程学报,2001,21(4):5-10.
- [12]薛永瑞,徐丙垠,等.小电流接地故障暂态方向保护原理研究[J].中国电机工程学报,2003,23(7):51-56.
- [13]吴青军,黄驾驾,刘东红.零序过流保护在单相接地故障选线中的应用[J].浙江电力,2016,35(5):47-49.