Lightning-Induced Voltages on Overhead Distribution Lines: Theoretical andExperimental Investigation of related Problems and their Impact on Power Quality

摘要

Recent power quality studies have been focused on the source-identification of voltage disturbances atdistribution network busses. This paper describes a method aimed at correlating indirect-lightningevents with power systems relay operations, associated with voltage dips. The proposed method, basedon the coordinated use of the Italian lightning location system CESI-SIRF, the Italian monitoringsystem of protection manoeuvres CESI-SAM, and the availability of an advanced simulation tool forthe accurate simulation of lightning-induced voltages on complex power networks, namely the LIOVEMTPcode, is applied to the real case of an Italian distribution system.The LIOV-EMTP code is also employed along with a statistical procedure based on the Monte Carlomethod to carry out a statistical analysis aimed at assessing the lightning performance of a typicalItalian distribution line.