A new method for reference network considering network topology optimization

In this paper, a new method for reference network considering network topology optimization is proposed. The actual operation mode optimization and the correction control with transmission switching under the contingency situation are taken into account in the proposed method. Based on the forecasted load values of each period in predictive multi-time scale and candidate transmission line schemes of future planning time horizon, a new optimal model for reference network is built. In the proposed model, the objective function is minimizing annual power generation cost and transmission cost, and the constraints are the safety operation technical requirements under normal operation state and N-1 accident operation state. The proposed model is a complex mixed-integer nonlinear problem mathematically, and can be converted to a mixed-integer linear programming problem. Finally, case studies are conducted to illustrate the effectiveness of the proposed method.