배전선로 주상변압기 뇌서지 보호시스템의 신뢰성 향상 및 경제적 구축방안 제안 (A Proposal of Reliability Enhancement and Economical Building Plan of Protection System of Pole Transformers in Distribution Line from Lightning Surge)

서지정보

· 발행기관 : 한국조명.전기설비학회
· 수록지 정보 : 조명.전기설비학회논문지 / 32권 / 9호 / 5 ~ 11페이지
· 저자명 : 고태유, 최준영

초록

Recent dramatic climate change requires stronger responses since damages from lightning are increasing although countermeasures for the lightning damages in the operation of the power system have long been a challenge. In this paper, the effect of the lightning surge on the distribution system and the importance of the lightning protection system are examined first. Then, lightning surge voltage limit, protection method of pillar transformer from lightning surge, main causes of failure and life span reduction of pillar transformer, devices for lightning surge protection and its operation are investigated. The effect of lightning surge is analyzed and it was identified that the difference of the lead wire length of the surge arrester makes great difference, which leads to a proposal of effective way of lightning surge protection. The proposed cutout switch with a surge arrester for pillar transformer is capable of simultaneously implementing the surge protection function and the overrun protection function. This new switch will contribute to economic, industrial and technological benefits such as reduced connection points and simplification of the installation, reducing potential causes of failure and lowering installation costs.

영어초록

Recent dramatic climate change requires stronger responses since damages from lightning are increasing although countermeasures for the lightning damages in the operation of the power system have long been a challenge. In this paper, the effect of the lightning surge on the distribution system and the importance of the lightning protection system are examined first. Then, lightning surge voltage limit, protection method of pillar transformer from lightning surge, main causes of failure and life span reduction of pillar transformer, devices for lightning surge protection and its operation are investigated. The effect of lightning surge is analyzed and it was identified that the difference of the lead wire length of the surge arrester makes great difference, which leads to a proposal of effective way of lightning surge protection. The proposed cutout switch with a surge arrester for pillar transformer is capable of simultaneously implementing the surge protection function and the overrun protection function. This new switch will contribute to economic, industrial and technological benefits such as reduced connection points and simplification of the installation, reducing potential causes of failure and lowering installation costs.

참고자료

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