CAJ | 학술논문

1000 kV淮南－南京－上海特高压交流线路在房屋密集地区，采用V型绝缘子串以减小走廊，因风速较大使得V型绝缘子串的夹角很大，横担较长，为满足间隙要求，横担也起拱设计。采用 Y 型绝缘子串可充分利用层间距离及塔头间隙的裕度，缩减横担长度，降低杆塔重量。以本工程为例，从 Y 型绝缘子串的结构、绝缘长度、电场分布、间隙的冲击放电和电磁环境等设计方面进行介绍分析，总结经验，优化设计。
1000 kV회남－남경－상해특고압교류선로재방옥밀집지구，채용V형절연자천이감소주랑，인풍속교대사득V형절연자천적협각흔대，횡담교장，위만족간극요구，횡담야기공설계。채용 Y 형절연자천가충분이용층간거리급탑두간극적유도，축감횡담장도，강저간탑중량。이본공정위례，종 Y 형절연자천적결구、절연장도、전장분포、간극적충격방전화전자배경등설계방면진행개소분석，총결경험，우화설계。
ABSTRACT:The 1 000 kV Huainan-Nanjing-Shanghai UHVAC transmission line uses the V-type suspension insulator string to reduce the cost of the building clearing in the dense areas. As the angle of V-type suspension insulator string is oversized due to the high wind speed, the arms of tower is longger and bended to satisfy the requirement of the clearance. Using Y-type suspension insulator string can take full advantage of the margin of the tower clearance, shorten the length of the arms, and finally reduce the weight of the towers. This project is taken as an example to analyse the insulation configuration, insulation distance, the distribution of electric field, electromagnetic environment, lightning protection and grounding, clearance to ground of the Y-type suspension insulator string, and sum up the experience to optimize the design.