Voltage and temperature distribution along semiconducting glaze insulator strings

Voltage distribution along a semiconducting glaze insulator string was calc ulated based an an equivalent circuit. The impedance effect of the insulato r unit on voltage and temperature distributions along the insulator string were also examined by calculation. The calculated results agreed well with experimental ones obtained in a laboratory test, showing that the equivalen t circuit and the program used are effective for the analysis of electrical /thermal performance of the semiconducting glaze insulator strings.