| 特高压交流输电线路瓷绝缘子的均压特性 |
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| 引用本文： | 冯勇,彭宗仁,刘鹏,谢天喜,李靖,张施令.特高压交流输电线路瓷绝缘子的均压特性[J].高电压技术,2010,36(1):270-274. |
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| 作者姓名： | 冯勇 彭宗仁 刘鹏 谢天喜 李靖 张施令 |
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| 作者单位： | 西安交通大学电力设备电气绝缘国家重点实验室,西安,710049 |
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| 基金项目： | 国家电网公司科技项目~~ |
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| 摘 要： | 由于电压等级较高,1000 kV特高压交流输电线路瓷绝缘子串电位分布很不均匀,导线侧电场集中现象严重,需要安装合适的均压环来改善绝缘子串的电位电场分布。应用3维有限元法,对特高压交流输电线路悬垂瓷绝缘子I串和V串的电位电场分布进行了仿真计算,得到了瓷绝缘子串的分布电压曲线;分析了均压环的位置、中心距和管径变化时对瓷绝缘子串的分布电压和电场分布的影响;最终给出了合理的均压环配置方案。通过对1000kV特高压交流输电线路均压环的配置优化,能够改善瓷绝缘子串的分布电压,降低均压环和金具表面的电场强度,其成果已经成功应用于我国特高压交流试验示范工程,效果明显。
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| 关 键 词： | 特高压 瓷绝缘子 电场计算 分布电压 均压环 优化 |
Voltage-sharing Characteristics of Porcelain Insulators for UHV AC Transmission Lines |
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| FENG Yong
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PENG Zong-ren
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LIU Peng
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XIE Tian-xi
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LI Jing
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ZHANG Shi-ling.Voltage-sharing Characteristics of Porcelain Insulators for UHV AC Transmission Lines[J].High Voltage Engineering,2010,36(1):270-274. |
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| Authors: | FENG Yong PENG Zong-ren LIU Peng XIE Tian-xi LI Jing ZHANG Shi-ling |
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| Affiliation: | State Key Laboratory of Electrical Insulation and Power Equipment;Xi'an Jiaotong University;Xi'an 710049;China |
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| Abstract: | Grading rings are needed to install to improve both the electric field and voltage distribution.Consequently,electric field and voltage distribution of double I and double V porcelain insulator strings were calculated with three-dimensional FEM.The voltage distribution curves along insulators were obtained.Meanwhile,by optimizing the structure parameters of grading ring,the influences of position,diameter and caliber of grading ring on voltage distribution and electric field were calculated and analyzed.Fin... |
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| Keywords: | UHV porcelain insulators calculation of electric field voltage distribution grading ring optimization |
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