Study on the Economic Dispatch Based on the Islanded Operation State of Integrated Energy System

In the context of double carbon, distributed photovoltaic and energy storage are connected to the distribution system on a large scale, and the regional integrated energy system provides flexibility to support the current double carbon development by establishing connections between various electrical and other energy flow components, such as renewable energy sources, energy storage elements and cogeneration units. Based on this this paper proposes an economic dispatch based on the islanded operation state of the integrated energy system has. The economic dispatch control strategy of microgrid under the isolated network operation mode is proposed. The microgrid system in the isolated operation mode does not need to make a power purchase and sale plan with the grid, and the internal load demand is completely supplied by microgrid micro power sources and energy storage devices. The power output of wind turbines and photovoltaic batteries is not controllable and does not participate in the dispatching plan, and the output power of the remaining micro power sources and energy storage devices is optimized, and a reasonable processing plan is dispatched within one day to make the objective function reach the minimum value. If all the micro-power sources reach the maximum power output and the energy storage devices are fully discharged, the power demand can still not be satisfied, and some of the general load can be removed to maintain the power balance, while considering the compensation cost.