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

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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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 no consideration of the strong uncertainty of new energy and the static voltage characteristics of different types of loads in microgrid planning. influences

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