中性点经消弧线圈并联中值电阻接地方式的研究*

doi:10.11985/2021.04.020

电气工程学报 ›› 2021, Vol. 16 ›› Issue (4): 159-165.doi: 10.11985/2021.04.020

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中性点经消弧线圈并联中值电阻接地方式的研究^*

叶远波¹(), 汪胜和¹(), 黄太贵¹(), 魏立新²()

1.国网安徽省电力有限公司合肥 230022
2.思源电气股份有限公司上海 201108

收稿日期:2020-12-20 修回日期:2021-10-08 出版日期:2021-12-25 发布日期:2022-02-10
作者简介:叶远波,男,1973年生,硕士,教授级高级工程师。主要研究方向为电力系统继电保护。E-mail： yeyb7079@ah.sgcc.com.cn
汪胜和,男,1971年生,硕士,高级工程师。主要研究方向为电力系统自动化。E-mail： wangsh5518@ah.sgcc.com.cn
黄太贵,男,1963年生,硕士,教授级高级工程师。主要研究方向为电力系统自动化。E-mail： huangtg2053@ah.sgcc.com.cn
魏立新,男,1979年生,高级工程师。主要研究方向为变电站自动化、电力系统接地故障保护等。E-mail： wlx@sieyuan.com
基金资助:
* 国家电网公司科技资助项目(52120018004L)

Study on Grounding Mode of Neutral Point through Arc Suppression Coil in Parallel with Median Resistance

YE Yuanbo¹(), WANG Shenghe¹(), HUANG Taigui¹(), WEI Lixin²()

1. State Grid Anhui Electric Power Co., Ltd., Hefei 230022
2. Sieyuan Electric Co., Ltd., Shanghai 201108

Received:2020-12-20 Revised:2021-10-08 Online:2021-12-25 Published:2022-02-10

摘要/Abstract

摘要：

针对传统中性点接地方式容易导致过补偿和欠补偿问题,接地故障定位误差较大的问题,设计出一种新型中性点接地方式,通过有源消弧技术并联中值电阻的方式解决故障电流过补偿和欠补偿问题,利用加权多源点最短路径算法(Floyd算法)进行单相接地故障定位,能够对多条输电线路同时进行故障定位处理。通过对比验证分析,比较三种不同接地方式的最大故障电流曲线和误差分析曲线,发现所提方法在故障电流处理最稳定,故障电流只在15~20 A之间,而且故障定位误差率最高不到3%,从而验证了所提接地方式性能的优越性,证明了本设计方案的可行性。

关键词: 有源消弧技术, 并联中值电阻接地方式, Floyd故障定位算法

Abstract:

The traditional neutral grounding method is easy to lead to over-compensation and under-compensation, and the location error of grounding fault is large. A new neutral grounding method is designed to solve the problem of over-compensation and under-compensation of fault current by using active arc suppression technique and parallel connection of median resistance, single-phase-to-ground fault location based on the weighted multi-source shortest path algorithm (Floyd algorithm) can be used for fault location of multiple transmission lines. Finally, by comparing the maximum fault current curve and error analysis curve of three different grounding modes, it is found that the fault current of the proposed method is the most stable, and the fault current is only between 15 A and 20 A, the maximum error rate of fault location is less than 3%, which proves the superiority of the grounding mode and the feasibility of the design.

Key words: Active arc suppression technology, grounding mode of parallel median resistance, Floyd fault location algorithm

中图分类号:

TM475

叶远波, 汪胜和, 黄太贵, 魏立新. 中性点经消弧线圈并联中值电阻接地方式的研究^*[J]. 电气工程学报, 2021, 16(4): 159-165.

YE Yuanbo, WANG Shenghe, HUANG Taigui, WEI Lixin. Study on Grounding Mode of Neutral Point through Arc Suppression Coil in Parallel with Median Resistance[J]. Journal of Electrical Engineering, 2021, 16(4): 159-165.

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参考文献 24

[1]	陈仕龙, 李建平, 谢佳伟, 等. 利用模量传输时间差的特高压直流线路故障测距[J]. 电力系统及其自动化学报, 2016, 28(8):20-24.
	CHEN Shilong, LI Jianping, XIE Jiawei, et al. Single-ended fault location for UHVDC transmission line based on propagation time gap between zero and aerial mode[J]. Proceedings of the CSU-EPSA, 2016, 28(8):20-24.
[2]	李自乾, 樊艳芳, 胡剑生. 不受波速影响的特高压直流输电线路单端故障测距方法[J]. 电力系统保护与控制, 2018, 46(18):142-148.
	LI Ziqian, FAN Yanfang, HU Jiansheng. Single terminal fault location method of UHVDC transmission line immune to wave speed[J]. Power System Protection and Control, 2018, 46(18):142-148.
[3]	刘晓琴, 王大志, 江雪晨, 等. 利用行波到达时差关系的配电网故障定位算法[J]. 中国电机工程学报, 2017, 37(14):4109-4115.
	LIU Xiaoqin, WANG Dazhi, JIANG Xuechen, et al. Fault location algorithm for distribution power network based on relationship in time difference of arrival of traveling wave[J]. Proceedings of the CSEE, 2017, 37(14):4109-4115.
[4]	杨晓丽, 舒勤. 基于单—双端行波测距原理的配网多端故障定位[J]. 电力系统及其自动化学报, 2018, 30(4):91-96.
	YANG Xiaoli, SHU Qin. Distribution network fault location based on single- and double-end traveling wave distance measurement principle[J]. Proceedings of the CSU-EPSA, 2018, 30(4):91-96.
[5]	WANG P, CHEN B, ZHOU H, et al. Fault location in reason and grounded network by adaptive control of neutral to earth complex impedance[J]. IEET Actions on Power Delivery, 2018, 33(2):689-698.
[6]	邓丰, 曾祥君, 马士聪, 等. 基于分布式行波检测的广域网络故障定位方法[J]. 电网技术, 2017, 41(4):1300-1310.
	DENG Feng, ZENG Xiangjun, MA Shicong, et al. Research on wide area traveling wave fault location method based on distributed traveling wave detection[J]. Power System Technology, 2017, 41(4):1300-1310.
[7]	林芳雯, 吴俊勇, 郝亮亮. 基于视在伪阻抗辨识的直流配电电缆单端在线故障定位方法[J]. 电网技术, 2016, 40(8):255-256.
	LIN Fangwen, WU Junyong, HAO Liangliang. One-terminal on-line fault location method for DC distribution cable based on apparent pseudo-impedance identification[J]. Power System Technology, 2016, 40(8):255-256.
[8]	刘健, 张志华, 张小庆, 等. 基于配电自动化系统的单相接地定位[J]. 电力系统自动化, 2017, 41(1):145-149.
	LIU Jian, ZHANG Zhihua, ZHANG Xiaoqing, et al. Single phase to ground fault location based on distribution automation systems[J]. Automation of Electric Power Systems, 2017, 41(1):145-149.
[9]	刘健, 张小庆, 申巍, 等. 中性点非有效接地配电网的单相接地定位能力测试技术[J]. 电力系统自动化, 2018, 42(1):138-143.
	LIU Jian, ZHANG Xiaoqing, SHEN wei, et al. Performance testing of single phase to earth fault location fer distribution network with neutral point non-effectively grounded systems[J]. Automation of Electric Power Systems, 2018, 42(1):138-143.
[10]	束洪春, 田鑫萃, 吕蕾. 基于多测度的闪络故障行波与干扰杂波辨识[J]. 电力系统自动化, 2017, 41(19):128-130.
	SHU Hongchun, TIAN Xincui, LÜ Lei. Multi-measure based identification of flashover fault traveling wave and interference noise[J]. Automation of Electric Power Systems, 2017, 41(19):128-130.
[11]	李振兴, 程宜兴, 吴李群, 等. 基于初始波头广域传输路径的行波定位单元优化配置[J]. 电力系统自动化, 2017, 41(18):60-66.
	LI Zhenxing, CHENG Yixing, WU Liqun, et al. Optimal placement of traveling wave fault location equipment based on wide area transmission path of initial wave head[J]. Automation of Electric Power Systems, 2017, 41(18):60-66.
[12]	谭武光, 段文学. 变压器零序保护与间隙接线原理及运行[J]. 云南电力技术, 2015, 43(Z2):162-163,165.
	TAN Wuguang, DUAN Wenxue. Transformer zero-sequence protection and gap wiring principle and operation[J]. Yunnan Electric Power, 2015, 43(Z2):162-163,165.
[13]	李健. 110 kV变压器中性点接地方式与零序保护配置[J]. 仪器仪表与分析监测, 2016(1):32-34.
	LI Jian. 110 kV transformer neutral grounding and zero protection configuration[J]. Instrumentation Analysis Monitoring, 2016(1):32-34.
[14]	罗皓文, 严文洁, 廖玄, 等. 一起断线引起主变间隙保护临界动作案例分析[J]. 电气技术, 2019, 20(12):108-111.
	LUO Haowen, YAN Wenjie, LIAO Xuan, et al. Analysis about a case of transformer protector tripping with non-fault[J]. Electrical Engineering, 2019, 20(12):108-111.
[15]	韩海英, 王永胜, 刘涛, 等. 110 kV线路零序过流保护误动作原因分析[J]. 内蒙古电力技术, 2017, 35(1):88-91.
	HAN Haiying, WANG Yongsheng, LIU Tao, et al. Cause analysis of zero-sequence overcurrent protection malfunctioning on 110 kV line[J]. Inner Mongolia Electric Power, 2017, 35(1):88-91.
[16]	宋俊文. 主变压器间隙保护与系统零序保护失配问题的解决措施[J]. 科技创新与应用, 2016(25):205-206.
	SONG Junwen. The solution of the mismatch between the main transformer clearance protection and the system zero sequence protection[J]. Technology Innovation and Application, 2016(25):205-206.
[17]	薛永端, 李娟, 徐丙垠. 中性点经消弧线圈接地系统小电流接地故障暂态等值电路及暂态分析[J]. 中国电机工程学报, 2015, 35(22):5703-5714.
	XUE Yongduan, LI Juan, XU Bingyin. Transient equivalent circuit and transient analysis of single-phase earth fault in arc suppression coil grounded system[J]. Proceedings of the CSEE, 2015, 35(22):5703-5714.
[18]	祝永坤, 杨永保, 陈晶, 等. 500 kV输电线路绝缘架空地线并联间隙放电原因分析及防范措施[J]. 内蒙古电力技术, 2018, 36(3):29-32.
	ZHU Yongkun, YANG Yongbao, CHEN Jing, et al. Discharging analysis and preventive measures for parallel gap on overhead insulating ground wire of 500 kV transmission line[J]. Inner Mongolia Electric Power, 2018, 36(3):29-32.
[19]	熊卫红, 毛兴华, 李景禄, 等. 小电阻接地方式对人身安全的影响及智能电阻接地方式研究[J]. 电力系统保护与控制, 2019, 47(14):166-172.
	XIONG Weihong, MAO Xinghua, LI Jinglu, et al. Influence of small resistance grounding mode on person safety and research of intelligent resistance grounding mode[J]. Power System Protection and Control, 2019, 47(14):166-172.
[20]	左秀江, 杨玉新, 刘辰, 等. 220 kV变电站主变压器大修后短路故障试验分析[J]. 内蒙古电力技术, 2017, 35(5):82-84.
	ZUO Xiujiang, YANG Yuxin, LIU Chen, et al. Experiment analysis of main transformer short-circuit fault in 220 kV substation overhaul[J]. Inner Mongolia Electric Power, 2017, 35(5):82-84.
[21]	王丙东, 蔡蕾. 中性点不接地系统非对称短路故障分析[J]. 电力系统保护与控制, 2017, 45(3):149-153.
	WANG Bingdong, CAI Lei. A comprehensive analysis for asymmetrical short-circuit fault of electric power system with neutral-point unground[J]. Power System Protection and Control, 2017, 45(3):149-153.
[22]	刘天明, 刘建锋, 肖贤贵, 等. 基于小波奇异熵和支持向量机的配电网单相接地选线新方法[J]. 电网与清洁能源, 2017, 33(2):14-20.
	LIU Tianming, LIU Jianfeng, XIAO Xiangui, et al. A novel approach to fault line selection in distribution networks based on wavelet singularity entropy and supporting vector machine[J]. Power System and Clean Energy, 2017, 33(2):14-20.
[23]	何锐, 韩涛, 顾泽玉, 等. 基于行波折反射特征的单相接地故障区段定位方法[J]. 智慧电力, 2018, 46(1):77-82.
	HE Rui, HAN Tao, GU Zeyu, et al. Single-phase to ground fault section location based on characteristics of traveling wave refraction and reflection[J]. Smart Power, 2018, 46(1):77-82.
[24]	郭丽伟, 薛永端, 徐丙垠, 等. 中性点接地方式对供电可靠性的影响分析[J]. 电网技术, 2015, 39(8):2340-2345.
	GUO Liwei, XUE Yongrui, XU Bingyin, et al. Research on effects of neutral grounding modes on power supply reliability in distribution network[J]. Power System Technology, 2015, 39(8):2340-2345.

接地方式	故障节点	稳定性/dB	误差(%)
本研究	单相接地	1.0	0.011
文献1	单相接地	2.5	0.124
文献2	单相接地	3.6	0.086

故障点	故障区间	Floyd故障点	Floyd定位距离/km
F1	1~3	L=403.33 m	0.78
F2	2~5	单相接地故障	12.63
F3	3~6	母线2接地故障	25.32
F4	4~8	母线2接地故障	21.35

中性点经消弧线圈并联中值电阻接地方式的研究^*

Study on Grounding Mode of Neutral Point through Arc Suppression Coil in Parallel with Median Resistance

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