Abstract:There are many targets for provincial power grid dispatching optimization, and the process is very difficult to realize. Therefore, it is urgent to develop a provincial power grid optimization dispatching algorithm to meet the actual demand. This paper uses the data of a desensitized power grid of a provincial company to build a provincial virtual power plant with a mixed integer programming model. The model aims to reduce the operating cost of the power grid (including the start-up and shutdown cost of thermal power units), promote the consumption of new energy and reduce carbon emissions. After simulating the provincial virtual power plant data for one year and getting the plan of thermal power plant start-stop, this paper continued to study the one day ahead despatch strategy including the robust scheduling method to ensure the reliability of power supply. In addition, this paper also studies the dispatching strategy of prefecture-level power grid, expounds the difference between it and provincial dispatching, and gives the output power up or down adjustment scheme that can be successfully implemented. The method described in this paper can be used to dispatch the provincial and prefecture-level power grids. The prefecture-level dispatching strategy has been deployed in a certain city in Zhejiang Province, and the operation is good.