1. Ph.D. Candidate, State Key Laboratory of Power Systems, Dept. of Electrical Engineering, Tsinghua Univ., Beijing 100084, China (corresponding author).
2. Associate Professor, State Key Laboratory of Power Systems, Dept. of Electrical Engineering, Tsinghua Univ., Beijing 100084, China.
3. Professor, State Key Laboratory of Power Systems, Dept. of Electrical Engineering, Tsinghua Univ., Beijing 100084, China.
4. Engineer, Dispatch and Communication Center, Central Branch of State Grid Corporation of China, No. 47, Xudong St., Wuhan 430077, China.