In recent years, it begins to be anxious about the warming problem by the increase in carbon dioxide on a scale of the earth. Actually, this is considered to be also a cause that this year is overly developing of a large-scale typhoon and the direct hit to a Japanese mainland. Inside of such backgrounds, every country in the world is performing the research and development about the new power generation system from various viewpoints in such backgrounds for the amount curtailment of discharge of carbon dioxide. In our country, a target called the amount of domestic wind power of 3000 MW is held up by the 2010 fiscal year. Then, in this research, by using a control device original whether it is what cannot increase system interconnection more paying attention to a wind power place, stability is improved and comparison and examination is performed This research shall perform comparison and examination for the ability to carry out which the system interconnection of the wind power place in the future, without causing quality aggravation of electric power by imitating the existing electric utility in a specific area.