Abstract：The microgrid, which is composed of distributed generation, can greatly improve the reliability and security of power system。At the same time it brings many challenges and technical issues to the power system, and limiting its development. In this paper, on the basis of the development of microgrid at home and abroad, a typical microgrid containing multiple distributed generations was constructed。Using PSCAD sofeware, the dynamic simulation model was built, and after study of the dynamic operating characteristics when in the grid connected operating model, isolated operating model and transiting mode, and analysis of the supply power, voltage and frequency of the distributed generations, a strategy of control and protection was given in these three running models。The results show that：the distributed generation system based on the electronic interface at the proper control strategy can run in the grid connected model or isolated operating model, and can realize smooth running and transformation, reduce transient effects in isolated running model, ensure system stability and voltage quality.
杨琦, 马世英, 李胜, 唐晓骏, 李晓珺. 微型电网运行及控制设计[J]. 电工技术学报, 2011, 26(1增): 268-275.
Yang Qi, Ma Shiying, Li Sheng, Tang Xiaojun, Li Xiaojun. Design of Microgrid Operation Model and Control. Transactions of China Electrotechnical Society, 2011, 26(1增): 268-275.
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2011, Vol. 26 
