A Survey of Diagnostic and Condition Monitoring of Metal Oxide Surge Arrester in the Power Distribution Network

Metal oxide surge arresters (MOSAs) are a popular solution for dealing with overvoltages due to lightning and switching in power distribution networks. As result, MOSA’s performance longevity have significant impact on the quality of energy frequency outages. A MOSA is determined by several elements such as leakage current, partial discharge, thermal image measured various ways. In this study, different techniques diagnostic condition monitoring MOSAs discussed, each method’s advantages disadvantages investigated. Additionally, results practical tests two 20 kV healthy degraded investigated compared.