Figure 9. Maximum E-field variations of the polymeric insulator at 400 kV by changing parameters of the corona ring. Based on several points, the functions were interpolated in polynomial by chasing the trend of changes the optimum values extracted. a) Max. E-field against normalized ring diameter. It is normalized against the Table 2 values. b) Max. E-field against the diameter of the ring tube. c) Max. E-field against the installation height

From

Comprehensive Analysis for Electric Field and Potential for Polymeric and Ceramic Insulators

Mohamad Saleh Sanjari Nia, Mohammad Altimania, Pourya Shamsi, Mehdi Ferdowsi

American Journal of Electrical and Electronic Engineering. 2020, 8(1), 26-34 doi:10.12691/ajeee-8-1-4