Determination of Optimal Spinning Reserve of Power Grid Containing Wind

Along with increasing wind farms' scales,traditional methods to decide spinning reserve are no more appropriate.The authors research how to take the presupposition that both security and economy of power grid operation and the uncertainty factors such as forced outage of generation units,predicted-deviation of load and wind turbine output into account to decide optimal spinning reserve,which power grid containing wind farm requires.Utilizing cost effectiveness analysis method in economics,taking minimized generation cost of power grid and expected outage cost as objective,the predicted-deviations of load and wind power output are analyzed by probability density function and the analysis results are led into the calculation of outage capacity of generation units;the demand of optimal spinning reserve is solved by intelligent optimization algorithm,meanwhile the sensitivity analysis of the influences of related factors on optimization result is performed.Simulation results show that the proposed model and algorithm are feasible.