Microgrid operation optimizing method by considering combined supply of cooling, heating and power with stored energy operation strategy

Abstract

The invention discloses a microgrid operation optimizing method by considering combined supply of cooling, heating and power with a stored energy operation strategy.The microgrid operation optimizing method comprises the following steps of: establishing a CCHP (combined cooling heating and power) microgrid optimizing model; constructing a target optimizing function with a target of lowest generating cost under a microgrid grid-connected operation state; according to the established target optimizing function, comprehensively considering load level of front and time periods with an output trend of each micro power supply, and determining the operation principle of an energy storage unit and a fuel battery to determine the best operation mode of the whole CCHP system in a scheduling period. The microgrid operation optimizing method disclosed by the invention has the beneficial effects that the microgrid electricity selling profits can be effectively increased for energy storage optimization, obvious advantages are provided in lowering the operation cost of the microgrid; the energy resource utilization rate of the stem can be improved and the energy gradient utilization can be realized in comparison with the conventional heat-engine plant and thermal power plant, so that reference is provided for energy saving of the power system; moreover, the energy is saved and the emission is reduced, pollution of air pollutants is greatly reduced, and significance is achieved in improving environmental benefits.

Description

technical field [0001] The invention relates to the field of micro-grid operation optimization, in particular to a micro-grid operation optimization method considering combined cooling, heating and power supply and energy storage operation strategies. Background technique [0002] The combined cooling heating and power (CCHP) system combines refrigeration, heating and power supply, which can realize cascade utilization of energy and reduce pollutant emissions. It is an energy-saving and environmentally friendly energy supply method. Good social and economic benefits. The microgrid solves the problem of large-scale access of distributed power sources to the power grid, and can effectively, flexibly and intelligently utilize various distributed energy sources, and has great potential in alleviating energy shortages, protecting the environment and improving power quality. In the context of developing a low-carbon green economy, the development of the CCHP microgrid combined wi...

AI Technical Summary

Problems solved by technology

[0008] The above studies have done a lot of work on the economic operation of the microgrid and the optimal allocation of energy storage capacity, but further research is still needed on improving the energy utilization rate of the microgrid and optimizing the energy storage strategy.

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