[1] Shenzhen Power Supply Bur Co Ltd, Metrol Management Inst, Shenzhen 518001, Guangdong, Peoples R China
[2] CSG Digital Grid Res Inst Co Ltd, Metrol Ctr, Guangzhou 510700, Guangdong, Peoples R China
[3] CSG Digital Grid Res Inst Co Ltd, Digital Grid Branch, Commun & Internetings Div, Guangzhou 510700, Guangdong, Peoples R China