Gapless Arresters Improve Line Reliability

摘要

Surge arrester use improves transmission system performance in Malaysia's severe lightning environment. MALAYSIA HAS A VERY HIGH ISOKERAUNIC LEVEL OF UP TO 200 THUNDERSTORM DAYS PER YEAR. This high incidence of lightning activity causes multiple line trippings on extra-high-voltage (EHV) transmission lines managed and operated by the transmission division of Tenaga Nasional Berhad (TNB; Kuala Lumpur, Malaysia). These line trippings are responsible for about half of the utility's total number of system outages each year.