Simulation and Analysis of the Potential Distribution of UHVAC ZnO Surge Arrester

LIU Boyao; XU Jianyuan; GAO Qiang; ZHONG Yafeng; ZHONG Dantian; HAO Sha

doi:10.13296/j.1001-1609.hva.2018.05.025

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Simulation and Analysis of the Potential Distribution of UHVAC ZnO Surge Arrester

更新时间：2025-04-26

- Simulation and Analysis of the Potential Distribution of UHVAC ZnO Surge Arrester
- High VoltageApparatus Vol. 54, Issue 5, Pages: 156-160+168(2018)
- 作者机构：
  
  1. 沈阳工业大学电气工程学院
  2. 国网辽宁省电力有限公司电力科学研究院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2018.05.025
  CLC： TM862
- Published：2018
- 稿件说明：
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[1]刘博垚,徐建源,高强,钟雅风,钟丹田,郝莎.特高压交流氧化锌避雷器电位分布仿真计算与分析[J].高压电器,2018,54(05):156-160+168.

LIU Boyao, XU Jianyuan, GAO Qiang, et al. Simulation and Analysis of the Potential Distribution of UHVAC ZnO Surge Arrester[J]. High voltageapparatus, 2018, 54(5): 156-160+168.
[1]刘博垚,徐建源,高强,钟雅风,钟丹田,郝莎.特高压交流氧化锌避雷器电位分布仿真计算与分析[J].高压电器,2018,54(05):156-160+168. DOI： 10.13296/j.1001-1609.hva.2018.05.025.

LIU Boyao, XU Jianyuan, GAO Qiang, et al. Simulation and Analysis of the Potential Distribution of UHVAC ZnO Surge Arrester[J]. High voltageapparatus, 2018, 54(5): 156-160+168. DOI： 10.13296/j.1001-1609.hva.2018.05.025.

摘要

为得到特高压交流氧化锌避雷器电位分布情况

采用有限元数值计算方法

建立三维模型

对1 000 kV交流氧化锌避雷器的电场进行仿真计算

得到避雷器的电位分布及氧化锌电阻片的容性电流值。应用光纤—电流法进行带电试验

测量了氧化锌电阻片的容性电流

经计算结果与测量结果对比验证了仿真模型的准确性。文中从氧化锌电阻片相对介电常数大小和均压环罩入深度角度

分析了影响避雷器电位分布均匀程度的因素。结论:氧化锌避雷器电位分布均匀程度随氧化锌电阻片相对介电常数的增大而提高;下层均压环罩入深度不变时

最上节避雷器电压分布系数随上层均压环罩入深度增大而变理想。

Abstract

To obtain the potential distribution of ZnO surge arrester

the finite element numerical calculation meth-od is used for 3D modeling. By simulating the electrical field of AC ZnO surge arrester in 1 000 kV system

the poten-tial distribution of surge arrester and the capacitive current of ZnO varistors are calculated. The fiber optic currentmethod is used for on-line test of the measurement on capacitive current of ZnO varistors. The comparison of the simu-lated results with the measured results proved the accuracy of the simulating model. In the paper two factors are hav-ing influence on the potential distribution of surge arrester

including the relative dielectric constant of ZnO varistorsand the cover depth of equalizing ring. The conclusion is:The uniformity of the potential distribution of ZnO surge ar-rester increases with the increase of the relative dielectric constant of ZnO varistors. The voltage distribution coeffi-cient of the toppest section of surge arrester is more ideally with the increase of cover depth of the upper equalizingring when the lower equalizing ring cover is in constant depth.

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