3-D FEM Calculation of Potential Distribution Along Porcelain String Insulators

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Porcelain string insulators are widely used in high voltage transmission lines. Calculation of potential distribution is extensively performed to design and develop high voltage insulators. In this paper a three-dimensional (3-D) potential analysis software (Maxwell) is applied to calculate potential distribution of 230 kV porcelain suspension insulators. The effects of tower cross arm's length, number of units and corona ring parameters for I-string and II-string insulators on the potential distribution along the porcelain suspension insulators are investigated. The result can be served as a basic reference in the optimum design and proper use of line insulators in practice
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Porcelain Suspension Insulators; Potential Distribution; Finite Element Method

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