[1]黄佳瑞,陈 立,左中秋,等.试验回路布置对变电站地网冲击特性测试的影响[J].电瓷避雷器,2020,(03):49-55,61.[doi:10.16188/j.isa.1003-8337.2020.03.008]
 HUANG Jiarui,CHEN Li,ZUO Zhongqiu,et al.Influence of Test Circuit Arrangement on the Impulse Characteristics of Substation Grounding Grid[J].,2020,(03):49-55,61.[doi:10.16188/j.isa.1003-8337.2020.03.008]
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试验回路布置对变电站地网冲击特性测试的影响()
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《电瓷避雷器》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2020年03期
页码:
49-55,61
栏目:
避雷器
出版日期:
2020-06-25

文章信息/Info

Title:
Influence of Test Circuit Arrangement on the Impulse Characteristics of Substation Grounding Grid
作者:
黄佳瑞12 陈 立1 左中秋1 汤 霖1 周文俊2
(1.中国电力科学研究院有限公司, 武汉 430074; 2.武汉大学电气工程学院, 武汉 430072)
Author(s):
HUANG Jiarui12 CHEN Li1 ZUO Zhongqiu1 TANG Lin1 ZHOU Wenjun2
(1.China Electric Power Research Institute Co., Ltd., Wuhan 430074, China; 2.School of Electrical Engineering Wuhan University, Wuhan 430072, China)
关键词:
地网冲击特性 电位分布 电流分布 冲击试验回路
Keywords:
Impulse characteristics potential distribution current distribution impulse test circuit
DOI:
10.16188/j.isa.1003-8337.2020.03.008
摘要:
开展地网冲击特性测试需搭建冲击放电回路,试验回路布置的差异会对地网冲击特性测试产生较大影响。在分析现有接地装置冲击试验系统构成的基础上,搭建试验回路对110 kV变电站地网进行了现场试验,研究了注流点对地网冲击特性的影响,并通过仿真计算研究了回流点对地网冲击特性的影响。试验结果表明,试验回路中注流点、回流点的选择会明显影响地网电位分布和电流的大小。在雷电冲击下地网高电位区域会集中在注流点附近,远离注流点的区域地网电位分布较均匀,注流点附近区域的地网散流变化大,远离注流点区域的地网散流较平均。仿真结果表明,由于回流极的影响,地网电位分布均匀度会低于无回流极情况,地网散流比例会略高于无回流极情况,增大回流极距离有助于减小地网冲击特性测量误差。
Abstract:
It is necessary to build an impulse current circuit for the impulse characteristics measurement of grounding grid. The differences in the arrangement of the test circuit will have greateffect on the test result. In this paper, based on the analysis of the existing impulse test system for grounding device, an impulse test circuit is built to perform field tests on 110 kV substation. The influence of the injection point on the impulse characteristics of grounding grid is researched by the test, and the influence of the reflow electrode on the impulse characteristics is studied by simulation calculation. The results show that the choice of injection point and reflow electrode will greatly affect the potential distribution and current distribution of grounding grid. The high potential area is concentrated near the injection point under the lightning impulse. The potential distribution in the area far from the injection point is relatively uniform. The current flowed through the grounding grid in the area near the injection point changes greatly. Far from the injection point area, the current distribution is more uniform. Due to the influence of the reflow electrode, the uniformity of the potential distribution is lower than that without the reflow electrode and the current distribution ratio is slightly higher than that without the reflow electrode. Increasing the distance of reflow electrode helps to reduce the difference from the actual lightning impulse condition.

参考文献/References:

[1] 王春杰,祝令瑜,汲胜昌,张乔根.高压输电线路和变电站雷电防护的现状与发展[J].电瓷避雷器,2010(3):35-46.
WANG Chunjie, ZHU Lingyu, JI Shengchang, ZHANG Qiaogen. Present and development of lightning protection for HV transmission lines and substations[J]. Insulators and Surge Arresters, 2010(3): 35-46.
[2]邓长征,杨迎建,童雪芳,董晓辉,彭庆华.接地装置冲击特性研究分析[J].高电压技术,2012, 38(9):2447-2454.
DENG Changzheng, YANG Yingjian, TONG Xuefang, DONG Xiaohui, PENG Qinghua. Impulse characteristic analysis of grounding devices[J]. High Voltage Engineering, 2012, 38(9): 2447-2454.
[3]何智强,文习山,王建武.接地网的雷电冲击响应特性计算分析[J].高电压技术,2007, 33(3):75-78.
HE Zhiqiang, WEN Xishan, WANG Jianwu. Lightning impulse response characteristic computation and analysis of grounding grid[J]. High Voltage Engineering, 2007, 33(3): 75-78.
[4]司马文霞,李晓丽,袁涛.考虑土壤非线性特性的接地网冲击特性分析方法[J].中国电机工程学报,2009, 29(16):127-132.
SIMA Wenxia, LI Xiaoli, YUAN Tao. Analysis of grounding grid impulse characteristics in frequency domain in consideration of soil non-linear characteristic[J]. Proceedings of the CSEE, 2009, 29(16): 127-132.
[5]朱昌成,邢鹏翔,鲁海亮,蓝磊,冯志强.基于电磁场的杆塔接地体冲击特性计算分析[J].中国电力,2014, 47(8):83-87.
ZHU Changcheng, XING Pengxiang, LU Hailiang, LAN Lei, FENG Zhiqiang. Analyses of the impulse characteristics of tower grounding devices based on electromagnetic field[J]. Electric Power, 2014, 47(8): 83-87.
[6]何金良,曾嵘.电力系统接地技术[M].北京:科学出版社,2007.
[7]夏长征,陈慈萱.位长度伸长接地体冲击特性的真型试验[J].高电压技术,2001, 27(3):34-35.
XIA Changzheng, CHEN Cixuan. Impulse experiment for real extended grounding electrode in unit length[J]. High Voltage Engineering, 2001, 27(3): 34-35.
[8]接地装置冲击特性参数测量导则:DL/T 266-2012[S]. 北京:中国电力出版社, 2012.
Guidelines for the measurement of impulse characteristic parameters of grounding devices: DL/T 266-2012[S]. Beijing, China: China Electric Power Press, 2012.
[9]刘溟,曹斌,郑俊杰,杨帅,涂长庚,喻剑辉,周文俊.输电线路杆塔地网冲击接地电阻现场测量方法[J].电瓷避雷器,2014(4):37-42.
LIU Ming, CAO Bin, ZHENG Junjie, YANG Shuai, TU Changgeng, YU Jianhui, ZHOU Wenjun. On-site measurement method of impulse grounding resistance of transmission Tower grounding network[J]. Insulators andSurge Arresters, 2014(4): 37-42.
[10]沈海滨,康鹏,边凯,陈光华,王颂虞,饶强.10 kV配电线路钢筋混凝土电杆接地特性试验研究[J].电网技术,2014, 38(6):1670-1675.
SHEN Haibin, KANG Peng, BIAN Kai, CHEN Guanghua, WANG Songyu, RAO Qiang. Experimental study on grounding characteristics of reinforced concrete poles for 10 kV distribution lines[J]. Power System Technology, 2014, 38(6): 1670-1675.
[11]苏磊,王丰华,王劭菁,穆卡,刘亚东.基于试验分析的变电站接地网冲击特性研究[J].高压电器,2016, 52(9):98-102.
SU Lei, WANG Fenghua, WANG Shaojing, MU Ka, LIU Yadong. Experimental analysis on impulse characteristics of substation grounding grid[J]. High Voltage Apparatus, 2016, 52(9): 98-102.
[12]杨琳,吴广宁,李建明.接地网冲击特性试验[J].电网技术,2010, 34(3):201-204.
YANG Lin, WU Guangning, LI Jianming. Field test of impulse characteristic of ground mesh[J]. Power System Technology, 2010, 34(3):201-204.
[13]邓长征,杨迎建,董晓辉,马少石,彭庆华,王湘汉.接地装置冲击大电流试验系统研制及杆塔接地冲击特性测试[J].高电压技术,2013, 39(6):1527-1535.
DENG Changzheng, YANG Yingjian, DONG Xiaohui, MA Shaodan, PENG Qinghua, WANG Xianghan. Development of impulse high current testing system of grounding devices and testing of tower grounding impulse characteristics[J]. High Voltage Engineering, 2013, 39(6): 1527-1535.
[14] 吴锦鹏,曹方圆,张波,何金良,曾嵘.环形金属回流极对接地装置暂态特性的影响[J].清华大学学报:自然科学版,2014, 54(12):1621-1625.
WU Jinpeng, CAO Fangyuan, ZHANG Bo, HE Jinliang, ZENG Rong.Influence of the return ring electrode on the transient characteristic of grounding devices[J]. Journal of Tsinghua University(Science and Technology), 2014, 54(12): 1621-1625.
[15]韩学民,夏长征,喻剑辉,徐斌,蒲兵舰,周文俊.杆塔接地体冲击电位分布特性的模拟试验[J].高电压技术,2011, 37(10):2464-2470.
HAN Xuemin, XIA Changzheng, YU Jianhui, XU Bin, PU Bingjian, ZHOU Wenjun. Simulation experiment on potential distribution for grounding electrode of transmission tower under impulse current[J]. High Voltage Engineering, 2011, 37(10): 2464-2470.

备注/Memo

备注/Memo:
收稿日期:2019-09-14 作者简介:黄佳瑞(1994—), 男, 工程师, 主要从事防雷与接地、高压避雷器等方面的研究工作。 基金项目:国家自然科学基金(编号:51277136)。
更新日期/Last Update: 2020-07-07