特高压交流输电线路复合绝缘子和均压环场强影响因素.pdf

第34卷第9期
输配电技木
电力建设
2013年9月
特高交输寯复合绝子和
灼於杨影呴因素
黄道春,黄正芳',张媛',王国利2,阮江军',皮伟才3
(1.武汉大学电气工程学院,武汉市430072;
2.特高压工程技术(昆明、广州)国家工程实验室,广州市510080;3.北京市电力公司,北京市100031)
摘要:1000k特高压交流输电线路复合绝缘子和均压环表面电场分布数值仿真研究具有媒质种类多、几何结构复
杂、计算量大等特点。为保证计算精度,需全面分析相关因素的影响,以合理简化计算模型,提高计算效率。通过建立
特高压交流输电线路双联复合绝缘子的三维静电场有限元全模型和简化模型,研究了导线、杆塔、金具,联板等因素对
复合绝缘子和均压环表面电场分布的影响,验近了模型简化的合理性。全模型和简化模型计算结果对比表明,将三相
?线控制在一定长度,对杆塔合理简化、省略联板和金具的简化方法可行,用简化模型代替完整模型进行复合绝缘子电
位分布、电场分布以及均压环表面电场分布的仿真研究,可有效降低计算规模,提髙特高压交流输电线路绝缘子和均压
环参数优化配置分析效率
关键词:特高压交流输电线路;复合绝缘子;均压环;有限元法;电场分布;影响因素
Influencing Factors of Composite Insulator and Grading Ring Surface
Electric Fields in JAM AC Power Transmission Lines
HUANG Daochun, HUANG Zhengtang', ZHANG Yuan
WANG Guoli, RUAN Jiangjun, PI Weicai
(E. School of Electrical Engineering, Wuhan University, Wuhan 430072, China
2. National Engineering Laboratory for ltra High Vollage Engineering Technology(Kunming, Guangzhou)
Guangzhou 510080, China; 3. Beijing Electric Power Company, Beijing 100031, China)
ABSTRACT: The numerical simulation study on the composite insulator and grading ring surface eleetric field distribution in
UHV AC power transmission line has the characteristics of the various mediums, the conplicated structure and the large
amount of calculation. In order to assure the caculation accuracy, related influencial factors should be comprehensivel
analyzed to reasonably simplify the calculation model and enhance computational efficiency. A whole and a simplified 3D
finite element model of doube composite insulator in HV AC transmission line was built. The influences of conductors
fittin
oke plate
p?
insulator and grading ring surface electric field distribution were
tu ed Finally, e reasona ily of he amplified model was validated The comparison results between whole model and
simplitied model show that the simiian f ower is reasonable, and the simpli cation method that omits the hardware
fittings and yoke plate is feasible, with controlling three-phase bundled conductors within a certain length. The simplified
model can replace the whole model to anaiyze the electric field and potential distriution of the composite insulator and the
electric field distribution on the grading ring surface, and it can reduce the calculation scale, as well as improve the analysis
efficiency of parameters optimization for the insulators string and grading ring in UHV AC transmission lines
KEYWORDS: HV AC power transmission line; composite insulator; grading ring; finite element method(FEM
electric field distribution influencial factors
中图分类号:TM854
文标志码:A
文编号:1000-7229(2013)09-0042-06
DOI:10.3969/j.is.1000-7229.2013.09.009
基金项目:特高乐工程技术(昆明、广州)同家丁程实验室开放基
金(NEL201106)
1: Elecmic Power Construction Vol 34, Na 9. Se. 20/3
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