[1]刘凌云,李志恒,张吴欣,等. 非线性电导材料改善避雷器不均匀电场研究[J].湖北工业大学学报,2021,(1):26-30.
　LIU Lingyun,LI Zhiheng,ZHANG Wuxin,et al. Study of Nonlinear Conductivity Materials for Improving Nonuniform Electric Field of ZnO Arrester[J].,2021,(1):26-30.
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 非线性电导材料改善避雷器不均匀电场研究()
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《湖北工业大学学报》[ISSN:1003-4684/CN:42-1752/Z]

卷:
期数:
2021年第1期
页码:
26-30
栏目:
湖北工业大学学报
出版日期:
2021-02-18

文章信息/Info

Title:
 Study of Nonlinear Conductivity Materials for Improving Nonuniform Electric Field of ZnO Arrester
文章编号:
1003-4684(2021)01-0026-03
作者:
 刘凌云1; 李志恒1; 张吴欣1; 司伟康1; 柳建军2
1 湖北工业大学太阳能高效利用及储能运行控制湖北省重点实验室， 湖北 武汉 430068； 
2 襄阳市三三电气有限公司， 湖北 襄阳 441000
Author(s):
 LIU Lingyun1;  LI Zhiheng1;  ZHANG Wuxin1;  SI Weikang1;  LIU Jianjun2
1 Hubei Key Laboratory for High-efficiency Utilization of Solar Energy and Operation Control of Energy Storage System, Hubei Univ. of Tech., Wuhan 430068, China;
2 Xiangyang TTE Electric Corporation, Xiangyang 441000, China
关键词:
 ; 不均匀电场;  氧化锌避雷器;  非线性电导率
Keywords:
 ; nonuniform electric field;  ZnO arrester;  nonlinear conductivity
分类号:
TM772
文献标志码:
A
摘要:
 复合无间隙氧化锌避雷器是保护电力系统中各种电气设备安全稳定运行，免遭操作过电压和大气过电压侵害的重要装置。而其外部硅橡胶绝缘材料长期承受不均匀电场，导致外部绝缘材料加速劣化，对避雷器本体的安全性能造成威胁。针对这个问题，实验制备10%~50%不同体积分数的ZnO-硅橡胶复合物，测试其电导特性，发现制备的30%~50%的复合物样品具有良好的非线性电导特性。对110 kV复合无间隙ZnO避雷器进行有限元计算，分析其外部绝缘材料空间场强分布情况，提出使用非线性电导材料对端部分布不均匀的高场强区域进行局部替换。仿真结果表明，使用非线性电导材料替换后，沿避雷器伞裙外表面最大场强从1.21 MV/m分别降至0.92 MV/m（体积比为40%ZnO-硅橡胶复合样品）、0.81 MV/m（体积比为50%ZnO-硅橡胶复合样品）。研究表明使用非线性电导材料可以显著降低避雷器端部最大场强，改善其电场分布不均匀性。
Abstract:
 A composite gapless zinc oxide surge arrester is an important device to ensure safe and stable operations of various electrical equipments in a power system, avoiding the operational overvoltage and atmospheric overvoltage. However, the external silicone rubber insulation material always undertakes the inhomogeneous electric field for a long period of time, resulting in the accelerated deterioration of the external insulation material, which greatly threatens the safety performance of the arrester body. Therefore, in order to solve this problem, ZnO/silicone rubber composites with different volume ratios were prepared. The conductivity characteristics of the composites were measured. It was found that the prepared 30% ~50% composite samples have excellent nonlinear conductance characteristics. The uneven high-field region was locally replaced using the nonlinear conductivity materials in an 110kV composite gapless ZnO lightning arrester simulation model. By analyzing the spatial distribution of the field strength in the external insulation material, it is shown that by replacing the conventional insulation materials with two kinds of nonlinear conductivity materials, the uninform distribution of the electric field can be greatly improved. The maximum field strength along the outer surface of the arrester skirt decrease from 1.21 MV/m to 0.92 MV/m and 0.81 MV/m, respectively.

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备注/Memo

备注/Memo:
［收稿日期］ 2020-09-29
［基金项目］ 太阳能高效利用湖北省协同创新中心开放基金资助项目（HBSKFZD2014004）
［第一作者］ 刘凌云(1970-)， 男， 湖北松滋人，湖北工业大学教授， 研究方向为人工电磁介质，非线性绝缘材料
更新日期/Last Update: 2021-02-19