Topological structure of wind-hydrogen-water-electricity hybrid energy system and control method of wind-hydrogen-water-electricity hybrid energy system

Abstract

The invention discloses a topological structure of a wind-hydrogen-water-electricity hybrid energy system and a control method of the wind-hydrogen-water-electricity hybrid energy system. Firstly, the topological structure of the wind-hydrogen-water-electricity hybrid energy system based on a permanent-magnet synchronous wind generator, a water storage tank, an electrolytic tank, a fuel cell and a load is constructed; the permanent-magnet synchronous wind generator is in grid-connected operation; the system works in a wind-electricity grid-connected generation operation mode or a surplus wind-electricity hydrogen production operation mode; stable control is achieved by a central controller; the permanent-magnet synchronous wind generator is off-grid operation; the system works in an abandoned wind hydrogen production operation mode or a fuel cell power generation operation mode; and stable control is achieved by the central controller. According to the topological structure and the control method, waste of wind energy can be reduced; the abandoned wind utilization capacity is improved; the quality of grid-connected electric energy is improved; harmonic pollution in a power grid is reduced; the comprehensive utilization efficiency of energy sources is improved; and the energy complementary operation ability of wind energy, hydrogen energy, water and electric energy is achieved.

Description

technical field [0001] The invention relates to an energy system and a method thereof, in particular to a wind-hydrogen-water-electric hybrid energy system topology and a control method thereof, so as to improve energy utilization efficiency. Background technique [0002] The gradual depletion of traditional energy and the increasing environmental pollution have seriously threatened the sustainable development of human beings. Therefore, the integration of renewable energy and off-grid power generation has become a hot research topic worldwide. As a renewable energy source, wind energy has attracted widespread attention due to its advantages such as abundant reserves, cleanness and environmental protection, and ease of large-scale development. However, due to the intermittent and fluctuating nature of wind energy, when the wind speed changes, the output power of the wind turbines will also change, thereby affecting the power quality of the grid. waste. In addition, due to ...

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Problems solved by technology

However, how to carry out coordinated control of wind turbines, water electrolysis cells and fuel cells to achieve efficient use of wind energy and improve the quality of wind power grid connection remains to be studied

[0004] Therefore, there is a lack of topological structure and coordinated control methods for wind-hydrogen-water-electric hybrid energy systems in the prior art, which can effectively improve energy comprehensive utilization efficiency and grid-connected power quality

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