Technical and economical optimisation of overhead power distribution line lightning protection

摘要

The existing methodology for overhead line lightning protection design does not take into account customer and utility costs of line outages. In the paper a new concept of line lightning protection design based on economic optimisation is presented. Different tower types are analysed and for various undelivered energy participation factors, optimal line designs suggested. In line lightning flashover rate estimation, both direct and induced surges are analysed.