Microgrid planning method considering load voltage characteristics and new energy strong uncertainty

A technology of uncertainty and voltage characteristics, applied in the field of electric power, can solve problems such as static voltage characteristics of different types of loads with strong uncertainty of new energy, etc.

Pending Publication Date: 2021-02-19
南京信息工程大学滨江学院 +1
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Problems solved by technology

[0005] Most of the current research focuses on reducing the uncertainty of new energy output to achieve its optimal planning in the microgrid, but there is n

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  • Microgrid planning method considering load voltage characteristics and new energy strong uncertainty
  • Microgrid planning method considering load voltage characteristics and new energy strong uncertainty
  • Microgrid planning method considering load voltage characteristics and new energy strong uncertainty

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Embodiment Construction

[0093] The specific implementation manners of the present invention will be further described below in conjunction with the drawings and examples. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0094] S1: Establishment of new energy model

[0095] In view of the strong uncertainty of wind power output, on the basis of the established new energy output prediction model, the uncertainty of new energy output is further reduced through the principle of affine number;

[0096] S1-1: PV output forecasting model

[0097] As one of the most common new energy sources, photovoltaic output is mainly affected by the intensity of solar radiation where the construction is located. The study found that the variation of the intensity of sunlight conforms to the Beta distribution, which is expressed as follows,

[0098]

[0099] In the formula: E is the sola...

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Abstract

The invention relates to a microgrid planning method considering load voltage characteristics and new energy strong uncertainty. The method comprises the steps of 1, establishing a new energy model; 2, establishing a power function load static characteristic model corresponding to each type of load; 3, establishing a microgrid planning comprehensive mathematical model considering load characteristics and new energy; 4, performing optimization solution by using an adaptive genetic algorithm; and finally, performing example simulation verification. Compared with a traditional microgrid planningmethod, the invention has the advantages that the load voltage characteristics and the strong uncertainty of new energy are considered at the same time, and microgrid characteristics and actual conditions are better met; requirements for reactive power output of new energy are provided, so that voltage fluctuation of the microgrid is smaller, and safe and stable operation of a microgrid system isguaranteed. According to the microgrid planning method with the minimum network loss and voltage fluctuation as the target, the planning cost of new energy can be reduced, the network loss of the microgrid can be reduced, and more economical operation of a microgrid system can be ensured.

Description

technical field [0001] The invention relates to a micro-grid planning method considering load voltage characteristics and strong uncertainty of new energy sources. It belongs to the field of electric power technology. Background technique [0002] With the shortage of primary energy and the increasingly serious environmental problems, clean and non-polluting new energy sources have begun to receive more and more attention, and with the development of science and technology, new energy sources such as wind energy and light energy (hereinafter referred to ) began to enter the grid. . [0003] However, due to the high penetration of new energy such as wind and solar power generation is affected by changes in the external environment and has strong uncertainties, it is very easy to cause voltage fluctuations in the power grid, increased network loss and other power supply quality problems, resulting in commercial loads, residential buildings, etc. Different types of loads suc...

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Application Information

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IPC IPC(8): G06Q10/04G06Q10/06G06Q50/06G06F17/11H02J3/00
CPCG06Q10/04G06Q10/0637G06Q50/06G06F17/11H02J3/004H02J2203/20H02J2300/28Y04S10/50
Inventor 田浩王可庆田文辉吴肇赟葛贤军王爱科宋长坡俞斌
Owner 南京信息工程大学滨江学院
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