三(San)峡(Xia)电(Dian)力(Li)大(Da)动(Dong)脉(Mai)-±(?)500千(Qian)伏(Fu)龙(Long)政(Zheng)线(Xian)是(Shi)三(San)峡(Xia)电(Dian)站(Zhan)送(Song)华(Hua)东(Dong)的(De)第(Di)一(Yi)条(Tiao)输(Shu)电(Dian)线(Xian)路(Lu),输(Shu)电(Dian)容(Rong)量(Liang)300万(Wan)千(Qian)瓦(Wa),相(Xiang)当(Dang)于(Yu)4台(Tai)三(San)峡(Xia)机(Ji)组(Zu)的(De)发(Fa)电(Dian)量(Liang),三(San)峡(Xia)输(Shu)电(Dian)线(Xian)路(Lu)龙(Long)政(Zheng)线(Xian)安(An)徽(Hui)段(Duan)全(Quan)长(Chang)约(Yue)370公(Gong)里(Li).