A new model and algorithm in power system economic dispatching with fluctuating load and wind power

This paper proposed a consideration of the load and stochastic property of wind energy in power system economic dispatch method. The load constraint at different periods is introduced in optimized model, load forecasting is no longer a single value, but considering a range of load forecast date at different period. And the optimized model is used in calculating the required initial population in order to response to the impact of load forecast deviation to system dispatching. Based on the full utilization of wind energy, the power output of thermal unit was optimized to obtain an economic dispatch scheme. The traditional literature only discussed the improvement for crossover and mutation individuals. Using the idea of combining crossover, mutation, reproduction and individual migration between sub-populations to improve the genetic algorithm, and solve the optimization model. The optimization model of a power system consisting of four thermal power generation units and one equivalent wind power generation unit is performed; the example testing results indicates the feasibility of the proposed method.