Yanxi 110kV substation is located in Xiaoyi Town, Guanyun County, Lianyungang City. A new 110kV outdoor substation is being built. The main transformer is 2×50MVA at the current phase and 3×50MVA at the future. 110kV outgoing line 4 times in this period, 4 times in the prospect; 10kV outgoing line 24 times in this period, vision 36 times; The total length of the newly built double loop overhead line is about 6.564km. New double-loop cable, path length 0.179km.