Hierarchical optimization design method for distributed energy supply system

Abstract

The invention discloses a hierarchical optimization design method for a distributed energy supply system, and the method comprises the following steps: S1, building a multi-objective optimization model of the distributed energy supply system according to the stability, high efficiency and economic index requirements of the system; S2, providing a hierarchical optimization solving method for the multi-objective optimization model; and S3, solving the multi-objective optimization model by adopting a hierarchical optimization algorithm to obtain the optimal design of the system. According to themethod, a wide-tolerance sequence layering thought is introduced into multi-objective optimization solution, all objective functions are sorted according to importance degrees, optimization solution is carried out on all the objective functions in sequence, optimization of the next layer of objective functions is completed in the optimal solution domain of the last layer of objective functions. Finally, integrated planning design and operation optimization of the distributed energy supply system are achieved, high-efficiency supply of energy can be achieved, and the purposes of economical efficiency of construction and operation and environmental friendliness are achieved.

Description

technical field [0001] The invention belongs to the field of distributed energy supply, and in particular relates to a layered optimization design method for a distributed energy supply system. Background technique [0002] With the continuous development of science and technology, the stability and efficiency are two very important indicators for a distributed system whose core unit is combined cooling, heating and power, and is connected with renewable energy such as photovoltaics and wind turbines. . Stability is the basic condition that a distributed energy supply system must meet first, and it is also the key to ensuring a safe energy supply for society. Under the premise of satisfying the stable conditions, the coordination and optimization of the energy supply efficiency, the economics of the distributed energy supply system (including construction investment economics and operation economics), and the environmental friendliness of the system should be improved as mu...

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Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the object of the present invention is to provide a hierarchical optimization design method for a distributed energy supply system, which solves the lack of optimization of the stability and efficiency of the distributed energy supply system in the prior art, and adopts the The multi-objective problem is solved by converting it into a single-objective method in the form of Lagrangian function or directly solving the multi-objective optimization model to obtain a non-inferior solution set, which cannot obtain a better planning scheme and cannot achieve hierarchical control between objectives

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