1Laboratory of Electric Power Communication Network Technology, Institute of Information and Communication, Global Energy Interconnection Research Institute Co., Ltd., Beijing 102209, China
2State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China
3Information Communication Branch, State Grid Eastern Inner Mongolia Electric Power Co., Ltd., Hohhot, Inner Mongolia, 0 10020, China
4Information Communication Branch, State Grid Liaoning Electric Power Co., Ltd., Shenyang, Liaoning 110006, China