【摘要】 分析了台风对35kV线路绝缘子串摇摆角的影响，提出一种可用于设计35 kV线路绝缘子串高压端导线的台风风偏摇摆角、接地端末端绝缘子伞裙与横担之间的最小空气间隙的新方法。分析表明，台风的水平风力、竖向风力及暴雨合成破坏力对35 kV线路造成绝缘灾害，其中，台风暴雨有可能先造成35kV线路发生单相间歇接地故障，导致杆塔绝缘子串最大风偏摇摆角出现绝缘漏洞，再造成线路非故障相的绝缘子串对杆塔闪络线路跳闸，台风的竖向风力有可能加大绝缘子串的风偏摇摆角。按间歇过电压空气间隙设计绝缘子串的台风风偏摇摆角，考虑竖向风力对台风风偏摇摆角的影响，绝缘子串采用4片串，采用横担垂直延长悬挂点或支撑绝缘子，可提高35kV线路的抗台风能力。更多还原

【Abstract】 The influence of typhoons on the wind deviation swing angle of 35kV transmission line insulator strings is analyzed, and a novel method is proposed to design the typhoon-induced swing angle of high-voltage end conductors in 35kV insulator strings and the minimum air gap between the umbrella skirt of the insulator at the ground end and the cross-arm. The analysis shows that the composed destructive force of horizontal wind force, vertical wind force, and heavy rainfall of typhoon can cause insulation disasters in 35kV transmission lines. Specifically, typhoon-induced heavy rainfall may initially cause singlephase intermittent grounding faults, resulting in insulation loopholes on the maximum wind swing angle of tower insulator strings, which can subsequently trigger flashover and tripping of non-fault phase insulator strings to the tower. The vertical wind force of typhoons may amplify the wind deviation swing angle of insulator strings. To enhance the typhoon resistance of 35kV transmission lines, the typhoon-induced wind deviation swing angle of insulator strings based on intermittent overvoltage air gaps is designed which considered the impact of vertical wind force on the swing angle of typhoon, a 4-unit insulator string is adopted,and the vertically extended suspension point on the cross-arm or support insulators is adopted.更多还原