超/特高压架空输电线路短路接地线烧伤分析

doi:10.11930/j.issn.1004-9649.201811090

中国电力 ›› 2019, Vol. 52 ›› Issue (9): 110-117.DOI: 10.11930/j.issn.1004-9649.201811090

超/特高压架空输电线路短路接地线烧伤分析

秦威南, 方玉群, 潜力群, 梁加凯, 蒋卫东

国网金华供电公司, 浙江金华 321000

收稿日期:2018-11-21 修回日期:2019-02-11 出版日期:2019-09-05 发布日期:2019-09-19
作者简介:秦威南(1987-),男,工程师,从事输电线路运行、检修、试验、技术管理工作,E-mail:k_meetup@163.com
基金资助:
国网浙江省电力有限公司科技项目（5211JH170008）。

Research on Electricity Burn of Shorting Grounding Wires in EHV and UHV Transmission Lines

QIN Weinan, FANG Yuqun, QIAN Liqun, LIANG Jiakai, JIANG Weidong

State Grid Jinhua Power Supply Company, Jinhua 321001, China

Received:2018-11-21 Revised:2019-02-11 Online:2019-09-05 Published:2019-09-19
Supported by:
This work is supported by Science and Technology Project of State Grid Zhejiang Electric Power Co., Ltd. (No.5211JH170008).

摘要/Abstract

摘要： 通过EMTP仿真计算，分析了淮南—皖南—浙北—上海1 000 kV交流同塔双回线路单回停电时的感应电压和感应电流，结合接地线服役情况，发现停电线路上的感应电压过大，以及接地线挂设过程中存在的反复拉弧放电是造成接地线烧伤的主要原因。利用模拟试验，在计算得到的最大感应电压下，对搭接接地线过程中的电弧进行试验研究，得到电弧能量对导线及工器具影响的临界值，通过引入消弧技术有效地解决了烧伤问题，为输电线路检修人员的作业安全提供了保障。

关键词: 短路, 智能接地线, 电弧, 烧伤, 超特高压, 高电压测量技术

Abstract: Based on EMTP simulation, an analysis is made on the induced voltage and induced current of the 1 000 kV AC double circuit lines on the same tower of the Huainan-Wannan-Zhebei-Shanghai transmission project with one circuit blackout. According to the service condition of grounding wires, it is found that the main causes for grounding wire burns are the excessive induced voltage on the blackout line and the repeated arc discharge during installation of the grounding wires. Under the maximum induced voltage calculated by simulation, the arc produced in the process of installing grounding wires is studied through test, and the critical value of arc energy which can have impact on the wire and equipment is obtained. The burn problem is effectively solved by introducing arc suppression technology, which guarantees the safety of maintenance personnel.

Key words: short circuit, intelligent grounding wire, electric arc, burn, EHV and UHV, high voltage measurement technology

中图分类号:

TM862⁺.3

秦威南, 方玉群, 潜力群, 梁加凯, 蒋卫东. 超/特高压架空输电线路短路接地线烧伤分析[J]. 中国电力, 2019, 52(9): 110-117.

QIN Weinan, FANG Yuqun, QIAN Liqun, LIANG Jiakai, JIANG Weidong. Research on Electricity Burn of Shorting Grounding Wires in EHV and UHV Transmission Lines[J]. Electric Power, 2019, 52(9): 110-117.

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链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.201811090

https://www.electricpower.com.cn/CN/Y2019/V52/I9/110

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超/特高压架空输电线路短路接地线烧伤分析

Research on Electricity Burn of Shorting Grounding Wires in EHV and UHV Transmission Lines

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超/特高压架空输电线路短路接地线烧伤分析

Research on Electricity Burn of Shorting Grounding Wires in EHV and UHV Transmission Lines

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