|
|
|
| Line Voltage Analysis and Fault Location Simulation of Single-phase Line Break Fault in Distribution Networkl |
| Wang Chengkai, Hong Zhizhang |
| State Grid Fujian Nanan County Electric Power Supply Co., Ltd, Nanan, Fujian 362300 |
|
|
|
|
Abstract 10kV distribution network is a neutral point is not grounded or small current grounding system. Monitoring the change of phase voltage or phase current is a common method for identification of single phase line break fault in distribution network. But it is difficult to implement, and the result is affected by the factor of single phase to ground fault. Measurement and analysis of phase line voltage vector can also identify distribution network single-phase disconnection fault, and it is not affected by the factor of single phase to ground fault. Installing line voltage measurement devices in power distribution lines, and the circuit of three phase line voltage vector are collected. Comparison and find out the maximum line voltage value, calculate the phase angle between it and the other two voltages, can effectively identify and locate the single-phase disconnection fault.
|
|
Published: 23 May 2017
|
|
|
|
| Cite this article: |
|
Wang Chengkai,Hong Zhizhang. Line Voltage Analysis and Fault Location Simulation of Single-phase Line Break Fault in Distribution Networkl[J]. Electrical Engineering, 2017, 18(5): 51-57.
|
|
|
|
| URL: |
|
http://dqjs.cesmedia.cn/EN/Y2017/V18/I5/51
|
[1] 郭相印, 艾东福, 周铁生. 10kV配电线路故障原因分析[J]. 河北工程技术高等专科学校学报, 2007(3): 29-32.
[2] 何金良, 傅芳伟, 陈水明, 等. 10kV绝缘导线配电线路断线机理分析[J]. 电力建设, 2001, 22(7): 1000- 7229.
[3] 徐红喜, 封波, 李红, 等. 一起10kV线路单相断线故障分析[J]. 江苏电机工程, 2012, 31(6): 15-18.
[4] 武鹏, 徐群, 沈忠旗, 等. 基于负荷监测系统的配电网故障测寻方法[J]. 电力系统自动化, 2012, 36(3): 111-115.
[5] 宗剑, 李冠一, 李晓波, 等. 配电网单相接地和断线故障选线定位方法[J]. 工矿自动化, 2006(4): 35-37.
[6] 国家电网公司, 中国电力科学研究院, 陕西电力科学研究院. 一种配电网单相断线不接地故障定位方法: 中国, 201310194012.8[P]. 2013.09.18.
[7] 山东大学. 一种适用于6~35kV配电网的断线报警装置及报警方法: 中国, 201310247895.4[P]. 2013.10.09.
[8] 中国电力科学研究院, 国家电网公司. 一种配电网断线故障定位方法: 中国, 201210154481.2[P]. 2012.10.03.
[9] 朱玲玲, 李长凯, 张华中, 等. 配电网单相断线故障负序电流分析及选线[J]. 电力系统保护与控制, 2009, 37(9): 35-38, 43.
[10] GB/T 15543—2008. 电能质量 三相电压不平衡[S].
[11] GB/T 12325—2008. 电能质量 供电电压偏差[S]. |
|
|
|
2017, Vol. 18 
