超高壓(ya)輸電(dian)(dian)(dian)線(xian)(xian)路(lu)為抑制電(dian)(dian)(dian)暈放電(dian)(dian)(dian)和(he)減少線(xian)(xian)路(lu)電(dian)(dian)(dian)抗所采取的(de)(de)一種導(dao)(dao)(dao)線(xian)(xian)架設方式。即每(mei)相導(dao)(dao)(dao)線(xian)(xian)由(you)幾根直(zhi)徑較小的(de)(de)分(fen)導(dao)(dao)(dao)線(xian)(xian)組(zu)成,各(ge)分(fen)導(dao)(dao)(dao)線(xian)(xian)間隔一定距離(li)并按對稱多角形(xing)排列。超高壓(ya)輸電(dian)(dian)(dian)線(xian)(xian)路(lu)的(de)(de)分(fen)裂(lie)導(dao)(dao)(dao)線(xian)(xian)數一般取3~4根。 分(fen)裂(lie)導(dao)(dao)(dao)線(xian)(xian)...
當(dang)線路(lu)(lu)的(de)電壓超過220kv時(shi),為了降低線路(lu)(lu)電抗和電暈損(sun)耗(hao),通常采用(yong)擴(kuo)徑導線或分(fen)裂導線,擴(kuo)徑導線和分(fen)裂導線的(de)區別是:分(fen)裂導線是將每(mei)相導線分(fen)為若干根子導線,每(mei)根之(zhi)間保(bao)持一(yi)定距離(一(yi)般為400mm)這樣(yang)可以使(shi)導線的(de)等效半徑增大,從(cong)而檢點(dian)線路(lu)(lu)的(de)電抗...
交流輸(shu)電線路的(de)電暈損失主(zhu)要(yao)與(yu)導(dao)(dao)線表面(mian)場強(qiang)(qiang)和天氣有(you)關(guan),根(gen)據絕(jue)緣(yuan)水平要(yao)求確定了(le)(le)相間距(ju)(ju)離后,導(dao)(dao)線表面(mian)場強(qiang)(qiang)主(zhu)要(yao)與(yu)導(dao)(dao)線分裂數(shu)、分裂間距(ju)(ju)和子導(dao)(dao)線直徑有(you)關(guan),分裂數(shu)越(yue)多,子導(dao)(dao)線直徑越(yue)大(da),表面(mian)場強(qiang)(qiang)越(yue)小(xiao)。擴(kuo)徑導(dao)(dao)線通(tong)過(guo)支撐鋁線疏繞的(de)方式擴(kuo)大(da)了(le)(le)導(dao)(dao)線外(wai)徑,這(zhe)樣(yang)可減小(xiao)...
分(fen)裂導(dao)(dao)(dao)線(xian)(xian)(xian)是(shi)由三根或(huo)四(si)根單芯導(dao)(dao)(dao)線(xian)(xian)(xian)經過某種工(gong)藝制造在一(yi)起的一(yi)種可分(fen)裂的導(dao)(dao)(dao)線(xian)(xian)(xian),或(huo)者稱導(dao)(dao)(dao)線(xian)(xian)(xian)束,這(zhe)種分(fen)裂導(dao)(dao)(dao)線(xian)(xian)(xian)不僅僅是(shi)形式上與常(chang)規導(dao)(dao)(dao)線(xian)(xian)(xian)不同(tong),由于分(fen)裂導(dao)(dao)(dao)線(xian)(xian)(xian)可使導(dao)(dao)(dao)線(xian)(xian)(xian)周(zhou)圍磁場(chang)分(fen)布改變(bian),從(cong)而(er)等效地增大了(le)導(dao)(dao)(dao)線(xian)(xian)(xian)半(ban)徑,減小了(le)導(dao)(dao)(dao)線(xian)(xian)(xian)電抗;同(tong)...