Energy management method and device of wind-light-biogas micro energy grid

Abstract

The invention provides an energy management method and an energy management device of a wind-light-biogas micro energy grid, which relate to the technical field of energy management. The energy management method comprises the steps of: establishing a multi-energy-flow steady-state model of the wind-light-biogas micro energy grid, performing coupled correlation analysis based on acquired historicaldata of environmental influencing factors, electrical load, thermal load and gas load as well as a preset prediction model, and acquiring predicted values of output of a draught fan as well as output, electrical load, thermal load and gas load of a solar combined heat and power generation system in a prediction domain from a current moment; solving an objective function through rolling optimization so that a value of the objective function is minimum, outputting a control strategy, then executing the control strategy and feeding back acquired wind and light output and load actual values in the prediction domain from the current moment to the prediction model, and correcting wind and light output and load predicted values at a next moment so as to optimize the prediction model; and repeating the above process at the next moment until the control strategy ends. The energy management method and the energy management device realize the economical and efficient multi-energy-flow compositesupply, improve the consumption of volatile new energy resources, and have great practical value.

Description

technical field [0001] The invention relates to the technical field of energy management, in particular, to an energy management method and device for a wind-solar-marsh micro-energy network. Background technique [0002] As a new organizational form of distributed power generation, microgrid plays an important role in promoting the local development and utilization of renewable energy, improving the efficiency of clean energy utilization, and solving power supply problems in remote areas. The microgrid can not be connected with the external traditional power network, relying on the combination of local wind energy, solar energy or other renewable energy generation for independent joint power generation to meet the power needs of local park users in different time periods. At present, the complementary hybrid power supply system in the micro-grid of the park focuses on the organic coordination between traditional thermal power, wind-solar new energy and energy storage, so as...

AI Technical Summary

Problems solved by technology

Although new energy is effectively used in this way, the battery energy storage system has to be frequently charged and discharged to maintain the balance of power supply and demand, which greatly shortens the life of the battery energy storage

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