Capacity optimization configuration method of independent micro power grid system

A technology for optimizing configuration and system capacity, applied in circuit devices, electrical components, AC network circuits, etc., can solve the problems of increased capacity configuration cost, large renewable energy loss, difficulty in consumption, and insufficient resource utilization.

Active Publication Date: 2018-12-07
YANSHAN UNIV
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  • Application Information

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Problems solved by technology

However, with the large-scale utilization of renewable energy, only relying on additional batteries can not only solve the problems of local consum...

Method used

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  • Capacity optimization configuration method of independent micro power grid system
  • Capacity optimization configuration method of independent micro power grid system
  • Capacity optimization configuration method of independent micro power grid system

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Embodiment Construction

[0131] The present invention will be further described below in conjunction with accompanying drawing:

[0132] combine figure 2 with image 3 , the steps of the method of the present invention are as follows:

[0133] Step 1, determine the networking mode of the microgrid system, and refine the type of flexible load:

[0134] Step 1-1, determine the networking mode of the microgrid system

[0135] Wind power generation, photovoltaic power generation, energy storage systems, inverters and loads (including fixed loads and flexible loads) constitute a typical independent wind / solar / storage microgrid system structure. According to the characteristics of various networking modes of the wind / solar / storage microgrid system, the present invention selects the DC bus networking mode with the advantages of simple control and convenient expansion. The structure diagram is attached figure 1 shown.

[0136] Step 1-2, refine the flexible load type

[0137] Different regions ...

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Abstract

The invention discloses a capacity optimization configuration method of an independent micro power grid system. Flexible load is divided into three types including the industrial high-load load, commercial polymerization load and citizen intelligent household load. The flexible load is used as a dispatchable resource coordination and energy storage system to stabilize and inhibit the wind/light power supply. Based on the principle that the energy storage system gives priority to imbalanced power of the stabilization and inhibition system and the flexible load coordinates the balance of the wind/light power supply, an optimization energy management strategy including multiple types of flexible loads where 'source-storage-load' coordinate with each other is established. A multi-target optimization configuration model where the basic investment cost of a micro power grid, the dispatching cost of the flexible load and the consumption rate of renewable energy are optimal comprehensively isestablished. By use of the MATLAB 7.10 to carry simulation, rationality and effectiveness of the method are verified. According to the invention, under the condition that the operation reliability ofthe system is ensured, system cost can be reduced and utilization rate of the renewable energy is improved.

Description

technical field [0001] The invention relates to the field of micro-grid design and planning, in particular to an independent micro-grid system capacity optimization configuration method considering source-storage-load phase coordination. Background technique [0002] With the continuous emergence of problems such as energy shortage and environmental pollution, distributed power generation including renewable energy such as wind power and solar photovoltaic has become a research hotspot worldwide. Microgrids can integrate distributed power generation units, energy storage units and loads to achieve integrated operation and work in grid-connected or island mode, which is an important part of the future smart grid. Therefore, the rational use of natural resources and the optimal allocation of wind / solar micro-power and energy storage capacity are the core issues in the field of micro-grid planning and design. [0003] In the current research on capacity allocation, due to the ...

Claims

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Application Information

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IPC IPC(8): H02J3/32H02J3/46H02J3/00
CPCH02J3/005H02J3/008H02J3/32H02J3/46H02J2203/20Y02E70/30Y02P80/20
Inventor 杨丽君黄凯婷孔晓磊王心蕊
Owner YANSHAN UNIV
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