Abstract：This paper presents results of the electric field distribution of UHV AC double-circuit transmission line of Y-type composite insulator string,using 3D simulation models based on the finite element method(FEM)in ideal conditions.The impact of length of each part,angle,single and double units on electric field distribution has been analyzed.It is found that the effect is closely related to the distance from conductor to the upper cross arm.From the perspective of the static electric field,it is suggested that the length of I part and V part choose 4 m/5 m.Compared with the 2 m/7 m,the maximum electric field strength on the racetrack type ring decreased by 1.6%,and 3.5% on composite insulators,the potential distribution on the position of 2 m reduced 13.2%.As the angle change the maximum field strength on both the racetrack type ring and the composite insulator are less than 2%,and it is suggested the angle stay 105°.Compared with double units the maximum electric field strength of single units is much lower,which is 8.7% on the racetrack type ring and 21.9% on the sheath of the composite insulator,single unit is suggested.
魏梦婷, 黄道春, 霍锋, 阮江军, 黄从鹏. 特高压交流线路Y型复合绝缘子串静电场分布[J]. 电工技术学报, 2017, 32(21): 203-210.
Wei Mengting, Huang Daochun, Huo Feng, Ruan Jiangjun, Huang Congpeng. Static Electric Field Distribution of Ultra-High Voltage AC Line Y-Type Composite Insulator String. Transactions of China Electrotechnical Society, 2017, 32(21): 203-210.
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