輸電線路施工

輸(shu)電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)路(lu)(lu)(lu)是用(yong)變壓器將(jiang)發電(dian)(dian)(dian)(dian)(dian)機(ji)發出的電(dian)(dian)(dian)(dian)(dian)能升壓后，再經斷路(lu)(lu)(lu)器等控制(zhi)設(she)備(bei)接入輸(shu)電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)路(lu)(lu)(lu)來實現(xian)。結構形式(shi)，輸(shu)電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)路(lu)(lu)(lu)分(fen)為架空輸(shu)電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)路(lu)(lu)(lu)和電(dian)(dian)(dian)(dian)(dian)纜(lan)線(xian)(xian)路(lu)(lu)(lu)。輸(shu)電(dian)(dian)(dian)(dian)(dian)線(xian)(xian)路(lu)(lu)(lu)的保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)有(you)主保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)與(yu)后備(bei)保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)之分(fen)。主保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)一(yi)般(ban)有(you)兩種(zhong)縱(zong)差保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)和三(san)段式(shi)電(dian)(dian)(dian)(dian)(dian)流保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)。而(er)在高(gao)壓系統(tong)中(zhong)主要采用(yong)高(gao)頻(pin)保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)。后備(bei)保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)主要有(you)距離保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)，零(ling)序保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)，方(fang)向保(bao)(bao)(bao)(bao)(bao)護(hu)(hu)(hu)等。