接地网网内压降的仿真分析

doi:10.11930/j.issn.1004-9649.2014.3.111.4

中国电力 ›› 2014, Vol. 47 ›› Issue (3): 111-115.DOI: 10.11930/j.issn.1004-9649.2014.3.111.4

接地网网内压降的仿真分析

张婷¹, 张小亮²

1. 上海工程技术大学工程实训中心,上海 201620；
2. 国网运行分公司上海管理处,上海 201402

收稿日期:2013-11-25 出版日期:2014-03-31 发布日期:2015-12-18
作者简介:张婷（1983-）,女,湖北襄阳人,工程师,从事电力系统控制和高电压技术研究。E-mail: zhangting0825@163.com

Simulation of Inner-Potential Difference of Grounding Grid

ZHANG Ting¹, ZHANG Xiao-liang²

1. Center of Practical Training, Shanghai University of Engineering Science, Shanghai 201620, China;
2. Shanghai Administrative Bureau, State Grid Operation Company, Shanghai 201402, China

Received:2013-11-25 Online:2014-03-31 Published:2015-12-18

摘要/Abstract

摘要： 随着电力系统容量的不断提高,变电站接地网所承受的入地短路电流也越来越大,接地网的网内压降可能危及电缆和二次设备安全。为此,研究接地网网内压降的计算模型,并利用接地仿真软件计算不同情况下的接地网网内压降。结果表明,土壤电阻率越低网内压降越大;铜材导体的网内压降相比钢材导体要小;地网面积越大网内压降就越大。在网内压降会超过1.4 kV时应适当增加钢材导体截面积或者选用镀铜钢接地网。

关键词: 接地网, 网内压降, 仿真分析

Abstract: With the increasing of power system capacity, the grounding short-circuit current that is withstanded by grounding grids of substations becomes higher and higher. The inner-potential difference may cause damage to cable and secondary equipment. A simulation model is presented in this paper. The grounding simulation software CDEGS is used to obtain the inner-potential difference under different conditions. The simulation results show that the lower soil resistivity leads to higher inner-potential difference, and the inner-potential difference of a cooper conductor is lower than the steel one’s; the larger grounding grid has the higher inner-potential difference. When inner-potential difference is greater than 1.4 kV, the cross-section of the steel conductor should be increased, or the coppered steel grounding grid should be chosen.

Key words: grounding grid, inner-potential difference, simulation analysis

中图分类号:

TM862

张婷, 张小亮. 接地网网内压降的仿真分析[J]. 中国电力, 2014, 47(3): 111-115.

ZHANG Ting, ZHANG Xiao-liang. Simulation of Inner-Potential Difference of Grounding Grid[J]. Electric Power, 2014, 47(3): 111-115.

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.2014.3.111.4

https://www.electricpower.com.cn/CN/Y2014/V47/I3/111

参考文献

[1] GB 50065—2011 交流电气装置的接地设计规范[S].
[2] IEEE Std 80—2000 IEEE guide for safety in AC substation grounding [S].
[3] OTERO A F, CIDRAS J, ALAMO J L. Frequency-dependent grounding system calculation by means of a conventional nodal analysis techniqne[J]. IEEE Tans Power Delivery, 1999, 14(3): 873-878.
[4] 谭波,杨建军,文习山,等. 高土壤电阻率地区大型水电站接地系统设计[J]. 高电压技术,2011,37（10）：2485-2490.
TAN Bo, YANG Jian-jun, WEN Xi-shan, et al . Safety design principle of grounding system in large hydropower station in the area of high soil resistivity[J]. High Voltage Engineering, 2011, 37(10): 2485-2490.
[5] 文习山,蓝磊,许军,等. 三峡电站允许地电位升高试验研究(Ⅰ)[J]. 电网技术,2003,27（2）：9-12.
WEN Xi-shan, LAN Lei, XU Jun, et al . Test research on tolerable ground potential rise of Three Gorges hydroelectric power station-partⅠ[J]. Power System Technology, 2003, 27(2):9-12.
[6] 蓝磊,文习山,许军,等. 三峡电站允许地电位升高试验研究(Ⅱ)[J]. 电网技术,2003,27（3）：5-7,22.
LAN Lei, WEN Xi-shan, XU Jun, et al . Test research on tolerable ground potential rise of Three Gorges hydroelectric power station-part II [J]. Power System Technology, 2003, 27(3):5-7, 22.
[7] 于刚,何金良,曾嵘,等. 二次电缆的工频电压耐受特性[C]//无线电干扰和变电站电磁兼容研讨会. 温州,中国,2006: 92-99.
[8] 何金良,于刚,曾嵘,等. 二次设备的工频电压耐受特性[C]//无线电干扰和变电站电磁兼容研讨会. 温州,中国,2006: 100-107.
[9] 刘帆,陈柏超,卞利钢,等. 变电站二次电缆屏蔽层接地方式探讨[J]. 电网技术,2003,27（2）：63-67.
LIU Fan, CHEN Bo-chao, BIAN Li-gang, et al . Discussion on shielded grounding mode of cables in secondary circuits of substations [J]. Power System Technology, 2003, 27(2): 63-67.
[10] 张钊. 考虑谐振过电压的消弧线圈接地系统阻尼参数整定算法[J]. 中国电力,2010,43（3）：75-77.
ZHANG Zhao. Setting principle for the damping resistance in the arc suppression coil system based on eliminating resonance over- voltage [J]. Electric Power, 2010, 43(3): 75-77.
[11] 李建胜,邝立新,许正立,等. 低压弱电设备过电压耐受能力的试验研究[J]. 供用电,2007,24（2）：52-54.
[12] 彭红海,周有庆,王洪涛,等. 微机保护装置抗干扰技术的研究[J]. 高电压技术,2007,33（10）：49-53.
PENG Hong-hai, ZHOU You-qing, WANG Hong-tao, et al . Anti- interference technology for microprocessor-based protection[J]. High Voltage Engineering, 2007, 33(10): 49-53.
[13] 钟成元,石雪梅. 变电站微机保护装置抗干扰的几点外部措施[J]. 高电压技术,2007,33（1）：196-197.
ZHONG Cheng-yuan, SHI Xue-mei. Analysis on anti-interference methods of microcomputer protection in substations[J]. High Voltage Engineering, 2007, 33(1): 196-197.
[14] 徐陆宇,张艳霞,薛士敏. 特高压输电线甩负荷引起的过电压叠加及其防护[J]. 中国电力,2011,44（10）：6-10.
XU Lu-yu, ZHANG Yan-xia, XUE Shi-min. Superposition of overvoltage caused by load rejection of UHV transmission line and preventive measures [J]. Electric Power, 2011, 44(10): 6-10.
[15] 雷翔胜,王彦峰,黄阳,等. 变电站镀铜钢接地网设计关键技术[J]. 广东电力,2012,25（11）：92-95.
LEI Xiang-sheng, WANG Yan-feng, HUANG Yang, et al . Key technology for substation coppered steel grounding network design[J]. Guangdong Electric Power, 2012, 25(11): 92-95.

接地网网内压降的仿真分析

Simulation of Inner-Potential Difference of Grounding Grid

PDF (PC)

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 11

编辑推荐

Metrics

[1]	魏艳慧, 张连康, 许逢源, 韩颜泽, 朱远惟, 李国倡. 绝缘隔板对空气间隙放电光谱特性的影响及电荷演变机理[J]. 中国电力, 2024, 57(3): 126-134.
[2]	王永红, 焦重庆, 肖冰, 郭安琪, 邱桂中, 秘立鹏, 徐克强. 变电站接地网上两点间电位差的特性[J]. 中国电力, 2021, 54(1): 150-158.
[3]	刘英, 赵明伟, 陈嘉威. 直流XLPE电缆用预制接头最大场强解析算法[J]. 中国电力, 2020, 53(9): 157-165.
[4]	王平, 贾立莉, 李守学, 李抗, 律方成. 110 kV全户内智能变电站接地网优化设计[J]. 中国电力, 2018, 51(3): 42-48.
[5]	于龙洋, 刘晔, 于施淼, 卢音朴. 超特高压油浸式电抗器电磁场仿真分析[J]. 中国电力, 2018, 51(11): 110-116.
[6]	徐嘉龙, 祝郦伟, 王晓宇, 严华江, 杨帆, 沈晓明. 接地网垂直接地极地表传导电流分析[J]. 中国电力, 2017, 50(2): 157-161.
[7]	祝郦伟, 沈晓明, 杨帆, 刘兴平, 王晓宇, 刘凯. 基于正则化的接地网断开故障诊断方法[J]. 中国电力, 2016, 49(11): 31-35.
[8]	傅敏，闫风洁，雍军，李辛庚，岳增武，王学刚. 铝铜稀土合金接地材料研究[J]. 中国电力, 2015, 48(9): 100-105.
[9]	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.
[10]	吴寒, 王维庆, 王海云, 饶成诚. 基于柔性直流输电技术的风电场暂态稳定性[J]. 中国电力, 2014, 47(12): 99-104.
[11]	李谦, 张波. 接地网设计理念及其工程实践[J]. 中国电力, 2014, 47(11): 40-45.

模态框（Modal）标题

接地网网内压降的仿真分析

Simulation of Inner-Potential Difference of Grounding Grid

PDF (PC)

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 11

编辑推荐

Metrics