CAJ | 학술논문

为了设计和开发性能优良的的超高压输电线路并联间隙防雷保护装置,开展了绝缘子串并联间隙的相关研究,包括其雷电冲击放电特性试验、操作冲击放电特性试验、工频短路电流试验和工频电压分布研究.提出了一种兼具绝缘子防雷保护和工频电场均压功能的环形并联间隙,并评估了加装并联间隙后的500 kV交流线路的耐雷性能.研究结果表明,所设计的并联间隙具有绝缘子雷击闪络保护、转移疏导工频电弧和均匀电场分布的功能,使得平原地区架空线路加装并联间隙后雷击跳闸率低于0.14次/(100 km·a).
위료설계화개발성능우량적적초고압수전선로병련간극방뢰보호장치,개전료절연자천병련간극적상관연구,포괄기뇌전충격방전특성시험、조작충격방전특성시험、공빈단로전류시험화공빈전압분포연구.제출료일충겸구절연자방뢰보호화공빈전장균압공능적배형병련간극,병평고료가장병련간극후적500 kV교류선로적내뢰성능.연구결과표명,소설계적병련간극구유절연자뢰격섬락보호、전이소도공빈전호화균균전장분포적공능,사득평원지구가공선로가장병련간극후뢰격도갑솔저우0.14차/(100 km·a).
In order to design and develop parallel gap lightning protection devices with high performance, the related studies of insulator string with parallel gap are carried out in this paper, including its lightning impulse performance test, switching impulse performance test, power frequency short circuit current test and power frequency voltage distribution. A ring type parallel gap is proposed, which has the functions of both lightning protection and electric field voltage equalizing. The lightning performance of 500 kV transmission lines with the ring type parallel gap is evaluated. The research results show that the designed parallel gap has functions of lightning flashover protection, AC arc transfer and AC voltage equalizing, and thus the annual rate of lightning trip-out of 500 kV lines with parallel gap can be lower than 0.14 times/(100 km·a) in plain regions.