有機(jī)復(fù)合絕緣子串電位分布特性計算
胡春江，張廣東，楊志華，溫定筠，張凱
甘肅省電力公司 電力科學(xué)研究院，甘肅 蘭州 730050
摘 要： 利用ANSYS 有限元軟件對有機(jī)復(fù)合絕緣子串表面場強(qiáng)和軸向電位分布進(jìn)行仿真計算，研究不同污層電導(dǎo)率對有機(jī)復(fù)合絕緣子串表面場強(qiáng)和軸向電位分布的影響。分析表明：有機(jī)復(fù)合絕緣子在覆有均勻污層狀態(tài)下，其傘裙邊沿處有較高的法向電場強(qiáng)度分量，且隨著污層電導(dǎo)率的增大，傘裙邊沿法向電場強(qiáng)度分量逐漸增大；其護(hù)套處有較高的切向電場強(qiáng)度，且隨著污層電導(dǎo)率的增大，切向電場強(qiáng)度沿泄漏方向的分布趨于均勻，為閃絡(luò)事故分析提供了理論依據(jù)。
關(guān)鍵詞： 有機(jī)復(fù)合絕緣子；有限元；電位分析
中圖分類號：TM216+.3 文獻(xiàn)標(biāo)識碼：A 文章編號：1007-3175(2013)03-0027-04
Potential Distribution Characterises Calculation of Organic Composite Insulator String
HU Chun-jiang, ZHANG Guang-dong, YANG Zhi-hua, WEN Ding-jun, ZHANG Kai
（Gansu Electric Power Research Institute, Lanzhou 730050, China）
Abstract: The finite element software ANSYS was used to carry out simulation calculation of surface field density and potential distribution of axial direction for organic composite insulator strings. Research was made on the impacts of different pollution layer conductivity on surface field density and potential distribution of axial direction for organic composite insulator strings. The analysis shows that when the organic composite insulator string was covered with an even pollution layer, there was much component along the normal field density at its umbrella skirt edge and the component fluctuated with the pollution layer conductivity; there was much component along the tangential field density at its jacket and the distribution of the tangential field density along leakage current direction tended to equality with the increase of the pollution layer conductivity, which provides theoretical basis for analysis of flashover accidents.
Key words: organic composite insulator; finite element; potential distribution
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