該大型煉(lian)油化(hua)工(gong)企業選用廣州智(zhi)光(guang)電氣股份(fen)有限公(gong)司的“相控(kong)消(xiao)弧線(xian)圈+主(zhu)動式擾動法選線(xian)”方案(an)：在總變(bian)電站兩段母線(xian)各(ge)加裝(zhuang)(zhuang)一套KD-XH01-400/6.3型消(xiao)弧線(xian)圈成(cheng)套裝(zhuang)(zhuang)置，總變(bian)電站及5個6kV分變(bian)電站，共安裝(zhuang)(zhuang)6套DDS型選線(xian)裝(zhuang)(zhuang)置，可實現上、下級變(bian)電站各(ge)線(xian)路單(dan)相接地故(gu)障的精準(zhun)定位。