Calculation of Voltage Distribution along Porcelain Suspension Insulators Based on Finite Element Method.

Porcelain string insulators are widely used in high-voltage transmission lines. Calculation of potential distribution is extensively performed in the design and development of high-voltage insulators. This article applies a three-dimensional electromagnetic analysis program to calculate the potential distribution of 230-kV porcelain suspension insulators under clean and dry conditions. The effects of cross-arm length, number of units, corona ring parameters, and also effects of wind force on the potential distribution along the porcelain suspension insulators are investigated and discussed. The results are useful for analyzing the potential distribution for porcelain suspension insulators. [ABSTRACT FROM AUTHOR]