A New Optimal Power Flow Model Considering the Active Power Constraints of Transmission Interfaces

An optimal power flow model as well as algorithm is provided for interconnected power systems considering active power constraints of transmission interfaces. To ensure the optimum operation of an interconnected power system, the optimal goal of the proposed model is minimizing the loss of active power. For satisfying transaction power constraints, the active power constraints of transmission interfaces are taken into account as inequality constraints. Considering the multi-area characteristic of interconnected power systems, a decomposition-coordination optimal model is proposed on the base of the model previously established. And the decomposition-coordination interior point method is used to solve the decomposition-coordination optimal model. Simulations of two test systems illustrate that the proposed model as well as the algorithm can improve computational efficiency, which can provide operation schedule decisions for interconnected power systems.