Measured faults during lightning storms

Lightning storms may only last some hours, but the number of faults during these storms can represent a considerable share of the annual disturbances. In this paper, six identified lightning storms were the main interest. In general, single-phase earth faults are the most typical fault type. However, in the lightning storms we researched, short circuits represented the majority of faults. The majority of faults, both during lightning storms and in normal conditions, are cleared by high-speed auto reclosure. In addition, it was observed that during lightning storms coincident faults and fault types that develop into another fault type before the opening of the circuit breaker occurred repeatedly. When observing the influence of overvoltage protection type on faults, the results encourage the use of surge arresters.