1. State Key Laboratory of Power Transmission Equipment & System Security and New TechnologyChongqing UniversityShapingba DistrictChongqing400044People's Republic of China
2. Nanning Power Supply BureauGuangxi Power Grid CompanyGuangxi530031Guangxi ProvincePeople's Republic of China
3. Foshan Power Supply BureauGuangdong Power Grid CompanyFoshan528000Guangdong ProvincePeople's Republic of China
4. State Key Laboratory of Advanced Power Transmission TechnologyGlobal Energy Interconnection Research Institute Co., Ltd.Beijing102209People's Republic of China