1. Yunnan Electric Power Research Institute,Kunming,China
2. National Energy Power Grid Technology R&D Centre,Guangzhou,China
3. Electric Power Research Institute, CSG,State Key Laboratory of HVDC,Guangzhou,China
4. Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System,Guangzhou,China
5. China Southern Power Grid,CSG Key Laboratory for Power System Simulation, Electric Power Research Institute,Guangzhou,China