Voltage and Electric Field Distribution Along Long Rod Type Ceramic Insulator Strings in 500 kV AC Transmission Line

ZHANG Baiqing; LIU Siyi; CUI Yandong; YANG Shuai; XIE Wei; ZHOU Wenjun

doi:10.13296/j.1001-1609.hva.2017.10.017

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Voltage and Electric Field Distribution Along Long Rod Type Ceramic Insulator Strings in 500 kV AC Transmission Line

更新时间：2025-04-26

- Voltage and Electric Field Distribution Along Long Rod Type Ceramic Insulator Strings in 500 kV AC Transmission Line
- High VoltageApparatus Vol. 53, Issue 10, Pages: 100-104+110(2017)
- 作者机构：
  
  1. 江苏省电力公司检修分公司
  2. 武汉大学电气工程学院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2017.10.017
  CLC： TM216
- Published：2017
- 稿件说明：
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[1]张佰庆,刘思逸,崔艳东,杨帅,谢伟,周文俊.500 kV交流线路长棒形瓷绝缘子串电位与电场分布[J].高压电器,2017,53(10):100-104+110.

ZHANG Baiqing, LIU Siyi, CUI Yandong, et al. Voltage and Electric Field Distribution Along Long Rod Type Ceramic Insulator Strings in 500 kV AC Transmission Line[J]. High voltageapparatus, 2017, 53(10): 100-104+110.
[1]张佰庆,刘思逸,崔艳东,杨帅,谢伟,周文俊.500 kV交流线路长棒形瓷绝缘子串电位与电场分布[J].高压电器,2017,53(10):100-104+110. DOI： 10.13296/j.1001-1609.hva.2017.10.017.

ZHANG Baiqing, LIU Siyi, CUI Yandong, et al. Voltage and Electric Field Distribution Along Long Rod Type Ceramic Insulator Strings in 500 kV AC Transmission Line[J]. High voltageapparatus, 2017, 53(10): 100-104+110. DOI： 10.13296/j.1001-1609.hva.2017.10.017.

摘要

为研究长棒形瓷绝缘子电位与电场分布

以指导现有运维策略。文中采用有限元法

建立500 kV长棒形瓷绝缘子串三维模型

仿真并分析其电位和电场分布。结果表明:沿绝缘子串高度方向

长棒形瓷绝缘子串表面电位呈现三段式曲线

绝缘子串两端电位变化较快;其表面电场强度随高度变化呈U形曲线分布

场强最大值在高压端第1片伞裙与棒芯连接处。相比于普通悬式绝缘子串

长棒形瓷绝缘子串金具较少

其电位和电场分布更不均匀。

Abstract

The voltage and electric field distribution of long rod type ceramic insulator helps to guide the existing operational strategy.The simulative calculation of long rod type ceramic insulator string in 500 kV transmission line is carried out through finite element method in three-dimensional model

and in comparison with disk ceramic insulator string.The result shows that the voltage distribution of long rod type ceramic insulator string presents a decline curve of three parts

and the electric potential of two ends declines faster than the middle.The electric field strength distribution of long rod type ceramic insulator string presents a U-shaped curve and the maximum field strength lies on the first rod core areas of umbrella skirt root of the high voltage end.Compared with disk ceramic insulator string

long rod type ceramic insulator has less fittings

its voltage and electric field distribution is more uneven.

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