Switching Surge Duty on Modern Arresters

This paper presents the results of an Anacom study which investigated the performance of modern lightning arresters during switching surge operation. A description of the variable characteristic arrester model used to simulate the lightning arrester is presented as are the results of the study using the model on a representative 345-kV system. Particular emphasis is placed on the parameters effecting the discharge current, voltages and energy with attention given to the protective characteristic of the arrester.