500 kV单回路耐张塔边相跳线直跳上绕布置

目前我国500 kV交流单回路干字型耐张塔边相跳线均采用直跳型式，边相带电部分最低点比耐张塔导线横担低4～6 m，有时成为对地距离的控制条件，需要进行地面开方、砍伐树木或者升高耐张塔。通过对500 kV单回路耐张塔进行改造和优化设计，将高边坡侧的边相跳线采用上绕布置方式，彻底消除对地距离由边相下绕跳线控制这个因素，达到既减少对环境的影响，节省线路综合投资，又方便施工，提高线路运行可靠性的目的。

Upward-bypassing Arrangement for Side Phase Jumper of 500 kV Single-circuit Tension Tower

Direct jumper of side phase has been widely applied in 500 kV AC single-circuit tension tower in China.The charged jumper lowest point may be 4~6 m lower than the tower's cross arm and lead to inadequate ground clearance,which may cause the ground excavation,wood cutting or tension tower rise.Therefore,an optimized design is applied to 500 kV AC single-circuit tension tower,in which upward-bypassing for side phase jumper is applied,and inadequate ground clearance can be properly solved.The solution can not ...