1. School of Electrical Engineering and Telecommunications, The University of New South WalesSydney 2052Australia
2. Jibei Electric Power Dispatching and Control Center, State Grid Corporation of ChinaBeijing 100053People's Republic of China
3. Department of Grid ConnectionGoldwind Australia Pty LtdSydney 2000Australia
4. Department of Electrical EngineeringTsinghua UniversityBeijing 100084People's Republic of China