Estimation Of Reliability Evaluation Of Wind Power Plant Connected To Power Grid: An Analysis

Abstract

The grid was also able to keep up voltage and frequency, and was able to provide any reactive power that was needed. India of 58 numbers of 225 KW each (13.5 MW).The reliability evaluation result of 10 units of Dewas plant connected to eastern grid were predictable. The estimates were based on the performance data of the individual units over a period of one year. The power produced by the wind turbine increases from zero at the threshold wind speed (cut in speed) (usually around 5m/s but varies with site) to the maximum at the rated wind speed. Above the rated wind speed, (15 to 25 m/s) the wind turbine continues to produce the same rated power but at lower efficiency until shut down is initiated if the wind speed becomes dangerously high, i.e. above 25 to 30m/s (gale force). The exact specifications for energy capture by the turbine depend on the distribution of wind speed over the year at the individual site. Air density has a significant effect on wind turbine performance. The power available in the wind is directly proportional to air density. As air density increases the available power also increases. Air density is a function of air pressure and temperature. It increases when air pressure increases or the temperature decreases. Both temperature and pressure decrease with increasing elevation. Consequently changes in elevation produce a profound effect on the generated power as a result of changing in the air density.