HVDC 송전선로의 과도 해석을 위한 양극성 낙뢰의 고려사항 및 모델링 연구

Abstract

Amongst many faults caused by the outdoor weather conditions in OHL, one is lightning strokes to or near the power transmission network. Lightning flashes that transfer to ground both negative and positive charges are referred to as bipolar lightning flashes. Most of the bipolar lightning events were identified in direct current measurements on tall grounded objects. Bipolar lightening constitutes of 26% lightning strokes [10]. In this research, various parameters and modeling of bipolar lightning strike in PSCAD software with less than 1% error rate has been presented and analyzed.