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Minimum life cycle net cost-based microgrid system optimal design method

A life cycle, system optimization technology, applied in computing, special data processing applications, instruments, etc., can solve problems such as not considering optimization goals, and achieve the effect of low net cost

Active Publication Date: 2012-02-15
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +1
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Problems solved by technology

[0004] The optimization software algorithms of the above micro-grid systems do not consider the minimum net cost of the whole life cycle as the optimization goal, so as to configure the power of distributed power supply and the capacity of energy storage system

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  • Minimum life cycle net cost-based microgrid system optimal design method
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  • Minimum life cycle net cost-based microgrid system optimal design method

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Embodiment Construction

[0017] The embodiment of the present invention provides a micro-grid system optimization design method based on the minimum net cost of the whole life cycle, which is used to determine the micro-grid system operation strategy according to the renewable energy resources and load requirements in the micro-grid system. The optimal capacity configuration of distributed power sources and energy storage in the grid system ensures the net cost of the micro-grid system in the entire life cycle, that is, the minimum cost. The implementation process of the present invention will be described in detail below in conjunction with specific examples.

[0018] refer to figure 1 , shows a micro-grid system based on wind, diesel and storage in this embodiment, where "wind" means wind power generator 12 used for renewable energy wind energy conversion, and "light" means photovoltaic power generator 12 used for renewable energy solar energy conversion The array 11, the wind generator 12 and the p...

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Abstract

The embodiment of the invention discloses a minimum life cycle net cost-based microgrid system optimal design method, which is used for confirming the optimum capacity configuration of each distributed power source and accumulation energy in the microgrid system in accordance with an operating strategy of a microgrid system and according to the conditions of the renewable energy sources resources, the load demands and the like in the microgrid system to guarantee the net cost to be within the life cycle, i.e. the cost is minimum. The method disclosed by the embodiment of the invention comprises the steps of: building a life cycle net cost-based target function of the microgrid system; confirming the optimal variable quantity of the target function according to the operating strategy of the microgrid system; confirming a constraint condition of the target function according to the operating strategy of the microgrid system; performing the quasi-steady-state emulation on the target function according to the constraint condition, and generating an optimal variable quantity combination to obtain an optimal computation result by means of the intersection and variation operations of a standard genetic algorithm; and confirming system parameters of the microgrid system according to the optimal computation result.

Description

technical field [0001] The invention relates to the field of microgrid systems for distributed power generation in electric power systems, in particular to an optimal design method for microgrid systems based on the minimum net cost of the entire life cycle. Background technique [0002] The microgrid system refers to a small power generation and distribution system composed of distributed power sources, energy storage devices, energy conversion devices, loads, monitoring and protection devices. It is an autonomous system that can realize self-control, protection and management. An effective way to supply power in remote areas or isolated islands off the coast. In the microgrid system, due to the uncertainty of renewable energy sources such as wind and solar energy, the nonlinear characteristics of loads and batteries, and the existence of various operating strategies, the optimal design of the microgrid system is difficult. [0003] At present, in terms of optimal design o...

Claims

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Application Information

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IPC IPC(8): G06F19/00
CPCY02E60/00
Inventor 赵波张雪松汪科周金辉周丹葛晓慧
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
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