Investigation and Verification of Loss Reduction Scheme for 220kV Long-distance Interconnection Line

Taking the scheme of reducing loss of Qinhuangdao 220kV long-distance interconnection line for example,the line loss rates of several types of interconnection lines were compared briefly.It was concluded that the operation mode of uncoupling the loop with Tangshan 220 kV electromagnetic loop network was the most advantageous to reducing the line loss rate,which was expected to provide references for the loss reduction scheme of similar long-distance interconnection lines.