Construction of micro power grid due to distributed wind power generations and power transmission facilities

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Wind power energy densities and annual productions generated by middle-scale windmill facilities in Kyushu were estimated based on information of fluctuations of wind direction and speed minutely recorded using power transmission lines. It was found that many places did not provide high annual mean wind in a low turbulent wind available for power generation though wind direction was stable. As a result, potential wind energy estimated using annual mean wind speed record overestimated those estimated in consideration of real turbulence of wind. Many windmill facilities which were located at places with big turbulence of wind will not exhibit the best performance in power generation. We concluded the construction of micro power grid requires high resolution wind information.