Dynamic Method for Solving Wind Power Penetration Limit Considering System Operation Risk

The negative effects from the integration of wind power will in turn limit the size of the wind power. In this paper, considering the randomness and volatility of wind power output, using the theory of risk constraint, we constructed a dynamic model to calculate the wind power penetration limit, and put forward the corresponding solving algorithm. Moreover,we put forward the risk index to measure the effects of wind power output random.Taking the combination of time and unit commitment as decision variables, the penetration limit of wind power as the optimization goal, we constructed the dynamic calculation model, meanwhile, considering the wind power penetration limit of system operation risk, we put forward the methods based on Benders decoupling and imperialistic competition algorithm. The 10 machine system were used to verify the correctness of the proposed model and algorithm, The results of simulation show that the wind power penetration limit is negatively correlated to systemic risks thresholds λ and positively correlated to the standard deviation σv wind speed forecast error.