Capacity allocation optimization method for island/offshore platform independent new energy resource micro-grid

Abstract

The invention belongs to the field of electric system micro-grids and relates to a capacity allocation optimization method for an island / offshore platform independent new energy resource micro-grid. The method includes the steps that the annual load hour average power of the island / offshore platform is acquired through actual measurement or estimation; local annual natural condition hour average data are acquired from a meteorological department; the annual predicated generation power of each power generation device per unit capacity is calculated; the number of all power generation devices and the number of all energy storage devices are initialized; the gross generation of all the power generation devices and the total power consumption of loads in the time period are calculated; the annual load power shortage ratio and energy surplus ratio are calculated. According to the method, correction factors for influence of special natural conditions on system parameters and correction factors for influence of special geographical conditions on cost are adopted, the ocean power generation devices and diesel engines are additionally arranged, and therefore the micro-grid can provide electric power better through renewable energy sources and the power supply reliability of the system is improved as well.

Description

technical field [0001] The invention belongs to the field of electric power system micro-grids, and relates to an optimal selection method for capacity configuration of an island / sea platform independent micro-grid system. Background technique [0002] The island independent micro-grid system is a power supply system suitable for islands or offshore platforms far away from land. It uses a variety of distributed new energy power generation equipment and traditional power generation equipment to provide power. The capacity of each distributed power generation equipment in the system needs to be selected according to local natural resource conditions and load conditions. However, due to the volatility and uncertainty of natural energy, energy storage equipment must be added to ensure the continuous operation of the system. Generally speaking, the system can include photovoltaic power generation equipment, wind turbines, ocean energy power generation equipment (including tidal ...

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Problems solved by technology

[0005] However, the research objects of the above studies are all conventional independent microgrids on land, and no targeted optimization has been carried out for the island microgrid system, and the methods and results are not suitable for the capacity optimization calculation of island microgrids.

In addition, due to the particularity of natural resources in the ocean, the combination of conventional distributed power generation cannot give full play to its complementary and mutually beneficial traditional characteristics. The addition of new power generation equipment is an inevitable choice

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