Two-stage coordinated optimization and control-based running method of combined cooling heating and power supply type microgrid

Abstract

The invention discloses a two-stage coordinated optimization and control-based running method of a combined cooling heating and power supply type microgrid. The running method comprises the steps of 10) performing inter-day rolling dispatching of the combined cooling heating and power supply type microgrid, in which optimal dispatching is performed by taking minimum running cost of the combined cooling heating and power supply type microgrid as an optimal target and combining forecast renewable energy generation power and load demand according to a running constraint condition of the system, and rolling output of each equipment and electricity purchase or sale quantity from a power grid are determined; and 20) building a real-time dispatching module of the combined cooling heating and power supply type microgrid, correcting an inter-day rolling dispatching result by taking dispatching fluctuation penalty-based minimum running cost of the combined cooling heating and power supply type microgrid as the optimal target and combining the renewable energy generation power and a load demand real-time value according to a real-time running constraint condition, and determining real-time output of each equipment in the combined cooling heating and power supply type microgrid and an electricity purchase or sale quantity real-time value. By the running method, the purpose of running economy and stability of the combined cooling heating and power supply type microgrid is achieved.

Description

technical field [0001] The invention belongs to the field of combined cooling, heating and power supply systems, and specifically relates to a combined cooling, heating and power supply microgrid operation method based on two-stage coordinated optimization and control. Background technique [0002] Due to its outstanding advantages in economy, energy efficiency and environmental protection, the combined cooling, heating and power system has become a rapidly developing new energy industry at home and abroad. The combined cooling, heating and power microgrid is installed on the user side in various ways such as small-scale, small-capacity, and modularization. It can provide three different forms of energy, cold, heat, and electricity, and can meet various load needs of users. At the same time, the combined cooling, heating and power microgrid uses non-polluting natural gas energy, which has a high energy utilization rate, and can be connected to new energy sources such as wind...

AI Technical Summary

Problems solved by technology

Due to the random characteristics of renewable energy and user load, there will be a certain deviation between the actual value and the predicted value in real-time operation, resulting in the actual operation often deviating from the day-ahead or intraday scheduling plan. On the other hand, it poses a threat to the safe and stable operation of the system

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