A equal incremental rate continuous time-varying optimal power distribution method for the power system containing microgrids

Abstract

Summary form only given. With the extensive use of renewable energy, the microgrid as an access and management structure of renewable energy has also been widely used. Many microgrids in the using process need to be accessed in external grid. As a part of the union power system, how to dispatching the devices in the microgrid and the external grid scheduling so as to make the entire system running more economically, saving operating costs and fuel costs, is an area worthy of study. The issue of dispatching the union power system of microgrids and external grid involved load forecasting, the basic principles of economical dispatching, the correction of transmission loss, security constraints and so on. Based on these analysis, the economical dispatching and optimal power flow calculation method based on equal incremental rate non-renewable fuels consumption theory was introduced. Optimal power flow(OPF) is often about the issue of the optimal distribution of grid power at a certain moment, which cannot show the randomness of new energy, a continuous time-varying optimal power distribution method was advised for the power system containing microgrids. It was used in a simulation calculating example to show the advance of this method.