Energy management method of multi-energy-storage-type containing grid-connection type wind and light storage micro-grid

Abstract

The invention discloses an energy management method of a multi-energy-storage-type containing grid-connection type wind and light storage micro-grid. The energy management method includes the steps that in the high electricity price stage, a wind electric generation mode, a light electric generation mode and the like are preferentially used for supplying electricity to loads, if redundant power exists, the redundant power is stored into an energy storage device, if wind power, light power and the like are insufficient, the energy storage device carries out discharging on the micro-grid, and if the discharging power of the energy storage device is insufficient, electricity is brought from a grid system; in the fair price stage, the wind electric generation mode, the light electric generation mode and the like are preferentially used for supplying the electricity to the loads, if redundant power exists, the redundant power is stored into the energy storage device, if the wind power, the light power and the like are insufficient, the energy storage device carries out discharging to meet the requirement of the loads, and if the SOC is small, electricity is brought from a large power grid; in the valley price stage, the requirements of the loads are met by buying electricity from the large power grid, and if the SOC of the energy storage device is small, the energy storage device is charged through the large power grid. By means of the energy management method, the problem that segmentation energy optimized management can not be carried out on most multi-energy-storage-type containing grid-connection type wind and light storage micro-grids according to electricity price information.

Description

technical field [0001] The invention belongs to the technical field of micro-grid energy management, in particular to an energy management method for a grid-connected wind-solar-storage micro-grid with multiple types of energy storage. Background technique [0002] In order to alleviate the energy crisis, build a sustainable energy system, and meet the diverse needs of users for electricity, renewable energy distributed power generation and micro-grid systems have received more and more attention. Microgrid can promote the grid-connected operation of distributed generation of renewable energy and improve the utilization of renewable energy. Utilization of renewable energy, energy saving and environmental protection are important research fields in my country's long-term scientific and technological development plan. Microgrid is a new distributed energy organization and structure. By combining a group of micro power sources, energy storage devices and loads in similar regio...

AI Technical Summary

Problems solved by technology

The above methods and technologies do not carry out in-depth analysis and detailed planning based on electricity price information, but only analyze the structure and economics of distributed power sources, loads, energy storage devices, etc., and do not conduct in-depth analysis of the operation of the microgrid within a day Analyze and propose detailed energy management solutions

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