該大(da)型煉(lian)油化(hua)工(gong)企(qi)業選(xuan)(xuan)(xuan)用廣(guang)州智光(guang)電(dian)氣股份有限(xian)公司的“相控消弧(hu)線(xian)(xian)圈+主(zhu)動(dong)式(shi)擾動(dong)法選(xuan)(xuan)(xuan)線(xian)(xian)”方(fang)案(an)：在總變電(dian)站(zhan)兩段母線(xian)(xian)各加裝一套KD-XH01-400/6.3型消弧(hu)線(xian)(xian)圈成套裝置(zhi)，總變電(dian)站(zhan)及5個6kV分變電(dian)站(zhan)，共安裝6套DDS型選(xuan)(xuan)(xuan)線(xian)(xian)裝置(zhi)，可(ke)實現上(shang)、下級變電(dian)站(zhan)各線(xian)(xian)路單相接地故障的精準定位。