1. Huazhong University of Scinece and Technology, State Power Investment Corporation Limited (SPIC) Power Energy Technology Co., Ltd.,Beijing,China
2. China Electric Power Research Institute,Protection Relay Department,Beijing,China
3. China Electric Power Research Institute,Power System Department,Beijing,China
4. School of Electrical and Electronic Engineering, Huazhong University of Scinece and Technology,Wuhan,China