| 引用本文: | 陆佳政,谢鹏康,方针,蒋正龙.重覆冰条件下防冰防雷绝缘子电场仿真与伞裙优化[J].电力自动化设备,2018,(3): |
| LU Jiazheng,XIE Pengkang,FANG Zhen,JIANG Zhenglong.Electric field simulation and sheds optimization of anti-icing and anti-lightning insulator under heavy icing condition[J].Electric Power Automation Equipment,2018,(3): |
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| 摘要: |
| 为研究防冰防雷绝缘子在重覆冰条件下的电场分布特性，进而优化防冰防雷绝缘子的伞裙结构，缓解其在覆冰状态下的电场畸变，建立了220 kV防冰防雷绝缘子的有限元仿真模型，计算得到了不同伞裙结构的绝缘子在清洁和覆冰条件下的电场分布，根据仿真结果对伞裙结构进行了优化，并对比了伞裙优化前后防冰防雷绝缘子的电场分布特性。结果表明：清洁状态下，伞裙结构对绝缘子电场分布影响很小；覆冰状态下，超大伞裙数目为5时可以更加有效地缓解重度覆冰对空间电场产生的畸变。优化后的伞裙结构可以使绝缘子在覆冰条件下的空间电场畸变有所缓解，起到提高冰闪电压的作用。 |
| 关键词: 绝缘子 覆冰 电场分布 伞裙优化 闪络电压 有限元仿真模型 |
| DOI：10.16081/j.issn.1006-6047.2018.03.027 |
| 分类号:TM85 |
| 基金项目:国家电网公司科技项目(5216A015001N) |
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| Electric field simulation and sheds optimization of anti-icing and anti-lightning insulator under heavy icing condition |
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LU Jiazheng, XIE Pengkang, FANG Zhen, JIANG Zhenglong
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State Key Laboratory of Disaster Prevention & Reduction for Power Grid Transmission and Distribution Equipment, State Grid Hunan Electric Power Corporation Disaster Prevention & Reduction Center, Changsha 410007, China
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| Abstract: |
| In order to analyze the electric field distribution of anti-icing and anti-lightning insulator under heavy icing conditions, and further accomplish the shed structure optimization and the distortion alleviation of electric field caused by icing, the finite element simulation model of 220 kV anti-icing and anti-lightning insulator is proposed. The electric field distributions of insulators with different shed structures under clean and icing conditions are calculated, based on which the shed structures are optimized and the electric field distributions of anti-icing and anti-lightning insulator before and after optimization are compared. The simulative results illustrate that the shed structure has very limited influence on the electric field under clean conditions, and the distortion of electric field caused by heavy icing can be alleviated effectively under icing conditions when the number of extra-large shed is 5. Optimized shed structures can alleviate the distortion of electric field caused by icing, which contributes to the improvement of icing flashover voltage. |
| Key words: electric insulators icing electric field distribution sheds optimization flashover voltage finite element simulation model |
