6Carr J A, Balda J C, Mantooth H A. A survey of systems to integrate distributed energy resources and energy storage on the utility grid[C]. //IEEE Energy 2030 Conference. 2008: 1-7.
7Chung Y H, Kim H J, Kim K S, et al. Power quality control center for the microgrid system[C]. //The 2nd IEEE Power and Energy Conference. 2008: 942-947.
8Schainker R B. Executive overview-energy storage options for a sustainable energy future[C]. //IEEE PES General Meeting. 2004:2309-2314.
9Kawakami N, Sumita J, Nishioka K, et al. Study of a control method of fuel cell inverters connected in parallel and verification test result of an isolated micro grid[C]. //Power Conversion Conference. 2007:471-476.
10ZHANG Hui, WANG Xin, REN Jing, et al. Research on superconducting magnetic energy storage in the photovoltaic distributed generation[C]. //The 6th IEEE International Power Electronics and Motion Control Conference, 2009: 2198-2202.
