尖电极静电场ANSYS解的误差  

The Error of ANSYS Solution of Electrostatic Field Produced by Sharp Electrode

作　　者：文康珍[1,2] 文远芳[1] 端木林楠[1] 黄斌[1] 伍爱莲[2,3] 

机构地区：[1]华中科技大学电气与电子工程学院,武汉430074 [2]武汉大学电气工程学院,武汉430072 [3]武汉科技大学中南分校,武汉430223

出　　处：《电瓷避雷器》2009年第2期14-16,共3页Insulators and Surge Arresters

基　　金：湖北省自然科学基金(编号:992P0115)

摘　　要：以35 kV针形绝缘子为例,构造了一个旋转抛物线体形状的理想模型绝缘子,计算了其静电场的解析解及由ANSYS软件获得的近似解;使用ANSYS软件求得了尖电极静电场的误差。通过解析解和近似解的对比,得出二点结论:负电极越尖,运用ANSYS求得的绝缘子里每点的电位和电场强度的误差越大;越靠近负尖电极的绝缘子里的点,运用ANSYS求得电位的误差越大,越靠近正或负电极的绝缘子里的点,运用ANSYS求得的电场强度的误差越大。In order to explain the error of electrostatic field of sharp electrode obtained using ANSYS program and ideal model insulator of circumgyrating parabolic shape was built according to 35kV Pin Insulator, the approximate solution of electrostatic field using ANSYS program and obtained approximate figure was presented. Through the comparison of the analytic solution and the approximate solution, two conclusions are obtained： the sharper the negative electrode is, the bigger the error of the electrical potential and electric field of any point in insulator are; the more the point in insulator close with negative sharp electrode, the bigger the error of the electric potential of the point is, and the more the point in insulator close with positive electrode or negative electrode, the bigger the error of the electric field of the point is.

关 键 词：静电场 ANSYS解的误差 针形绝缘子 

分 类 号：TM216[一般工业技术—材料科学与工程]