Power Flow Optimization for Inter-regional Transmission under Low-carbon Economy with Large-scale Wind Integration

In recent years, China has become one of the largest CO2 emitter in the world. Boosting the production of renewable electricity, such as wind power production, is a key measure to develop a low-carbon power system. A method for optimizing inter-regional power transmission flow with large-scale wind integration under low-carbon economy has been proposed, which takes the minimization of the overall cost as the objective function. With the CO2 emission cost arising from power generation of the entire system, the method proposed can better optimize the power flow for inter-regional transmission with large-scale wind integration. Then the proposed method was applied to an analytic study of power flow optimization between two provincial grids with large-scale wind integration in China for a certain year. The optimization result showed the method proposed is rational and the carbon emission will have a significant impact on the overall operation cost and power flow optimization.