Economic optimization operation method for combined heat and power generation type microgrid

Abstract

The invention discloses an economic optimization operation method for a combined heat and power generation type microgrid. According to the method, the influences in multiple aspects of electrothermal characteristics of a heat pump apparatus in a combined heat and power generation type microgrid system, charge / discharge life loss expenses of an energy storage apparatus, wind curtailment loss, startup and fuel expenses of a combined heat and power generation unit and the like are researched; the influences are converted into expense costs to be added into a target function; an optimal economic operation model of the microgrid is established and solved by adopting a particle swarm algorithm; related constraint conditions are made in the solving process to perform particle swarm constraint adjustment so as to improve the solving efficiency; and an optimal economic operation scheme of the combined heat and power generation type microgrid is obtained, and the heat-electricity performance of the combined heat and power generation type microgrid in a scheduling cycle is controlled according to the optimal economic operation scheme, so that the situations of excessive generated energy and waste of power and energy resources in the microgrid system are reduced, and the operation cost of the microgrid system is assistantly reduced under the condition of meeting power supply load demands.

Description

technical field [0001] The invention relates to the technical field of economical operation of electric power systems, in particular to an economically optimized operation method of cogeneration microgrids, and belongs to the technical field of economical dispatching of electric power systems. Background technique [0002] Combined Heat and Power (abbreviated as CHP) and wind power are two technologies that have been vigorously developed in the power industry in recent years. Combined heat and power generation is an advanced form of energy utilization that produces both electricity and heat. It can use energy in stages and further utilize the waste heat generated after power generation to improve the comprehensive utilization rate of energy. It can reduce energy consumption, improve air quality, and save land. , improve the quality of heating, and facilitate the comprehensive utilization of energy. In addition, with the increasingly prominent global energy and environmental...

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Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides an economically optimized operation method of a cogeneration microgrid, which comprehensively considers the electrothermal characteristics and losses of the cogeneration units in the cogeneration microgrid, as well as the storage Based on factors such as the energy storage life loss of the energy device, the optimal economic operation model of the microgrid is established, and the particle swarm algorithm is used to solve the problem, and the optimal economic operation plan of the cogeneration microgrid is determined to reduce the occurrence of power generation in the cogeneration microgrid. Oversupply, waste of power and energy resources, and help reduce the operating cost of the microgrid system while meeting the power supply load demand

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