Analysis and Countermeasures of Prevent Ice-Melting Flashover for Hunan Power Grid Transmission Lines

CHAO Yafeng; LIU Ming; YUE Yishi; ZHAO Shihua; WANG Feng; WANG Cheng

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Analysis and Countermeasures of Prevent Ice-Melting Flashover for Hunan Power Grid Transmission Lines

更新时间：2025-11-18

- Analysis and Countermeasures of Prevent Ice-Melting Flashover for Hunan Power Grid Transmission Lines
- Vol. 37, Issue 3, Pages: 30-33(2017)
- 作者机构：
  
  1. 国网湖南省电力公司电力科学研究院
  2. 国网湖南省电力公司怀化供电分公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM752
- Published：2017
- 稿件说明：
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[1]巢亚锋,刘明,岳一石,赵世华,王峰,王成.湖南电网输电线路防融冰闪现状及对策研究[J].湖南电力,2017,37(03):30-33.

CHAO Yafeng, LIU Ming, YUE Yishi, et al. Analysis and Countermeasures of Prevent Ice-Melting Flashover for Hunan Power Grid Transmission Lines[J]. 2017, 37(3): 30-33.
[1]巢亚锋,刘明,岳一石,赵世华,王峰,王成.湖南电网输电线路防融冰闪现状及对策研究[J].湖南电力,2017,37(03):30-33. DOI：

CHAO Yafeng, LIU Ming, YUE Yishi, et al. Analysis and Countermeasures of Prevent Ice-Melting Flashover for Hunan Power Grid Transmission Lines[J]. 2017, 37(3): 30-33. DOI：

摘要

对湖南电网输电线路外绝缘进行校核

结果显示220kV线路不满足防融冰闪要求条数占总数的66.05%

500kV线路为36.17%;其中在重冰区与e级污区叠加区域

输电线路干弧距离不满足防冰闪要求的杆塔占所有不满足干弧距离要求杆塔数量220kV的为1.03%

500kV线路为0.45%。分析发现设备自身缺陷和防冰改造力度不足是输电设备防融冰闪能力较差的主要原因。提出了提高预报精度、加强冰情观测管理和对设备分级关注的防融冰闪策略。针对不满足防融冰闪要求的220kV及500kV架空线路

提出了运行和治理建议。

Abstract

The outdoor insulation of the transmission lines of Hunan Power Grid is checked in this paper

the result displays that there are 66. 05% of 220kV transmission lines can not meet the demand of prevent ice-melting flashover

and for 500kV transmission lines

the percentage is 36. 17%. And in the superposition region of heavy icing area and e class pollution area

there are 1. 03% of towers can not meet the demand of prevent ice-melting flashover for 220kV transmission lines

and for 500kV transmission lines

the percentage is 0. 45%. Self-defect and insufficient of anti-icing improvement are the primary causes of the poor prevent ice-melting flashover capacity for the overhead transmission lines. The strategy of prevent ice-melting flashover by improving forecast accuracy ment

reinforcing the manager of ice condition observation

classifying and focusing on the poor prevent ice-melting flashover capacity facility are proposed. And the operation and improvement advice for prevent ice-melting flashover is also proposed in the paper.

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