Multi-energy complementary control system and method based on renewable energy power generation

Abstract

The invention discloses a multi-energy complementary control system and method based on renewable energy power generation. Renewable energy power generation, water electrolysis hydrogen production, hydrogen storage, storage battery charging and discharging and hydrogen fuel cell power generation are adopted. In a grid-connected state, the load requirement of an external power grid is met preferentially, and residual electric energy is absorbed and stored through storage battery charging and water electrolysis hydrogen production; and when the requirement of the external power grid cannot be met, a storage battery can discharge and a fuel cell can generate electricity to make up the electric energy. in an off-grid state, generated electric energy is used for electrolyzing water to prepare hydrogen; and the storage battery pack can be charged when the electric energy is surplus and can supply power to a water electrolysis hydrogen production system when the electric energy is insufficient. The system and method have the advantages of being flexible in regulation and control and guaranteeing the stability of power supply of the power grid.

Description

technical field [0001] The invention belongs to the technical field of energy utilization, and in particular relates to a control system and method for multi-energy complementary power generation based on renewable energy. Background technique [0002] In recent years, as the problem of environmental pollution has become more and more prominent, countries all over the world have paid attention to the development of new energy sources. Photovoltaic power generation and wind power generation as renewable energy sources have won people's favor with their high efficiency, clean and sustainable "zero carbon" characteristics. It has been widely valued and developed rapidly in our country. my country's scenery resources are very rich, but the trend of regionalization is also very obvious, resulting in the inability to achieve a good match between resources and demand in terms of time and space, resulting in a waste of energy. Rational use of wind and solar resources requires the a...

AI Technical Summary

Problems solved by technology

[0004] 1. The power generation of wind and solar resources is often concentrated in a specific time period, such as during the day when the sun is strong or in the windy season, which often causes a mismatch between the centralized grid-connected power and the power that can be received by the external power grid in time and space, and the control ability is poor

[0005] 2. Renewable energy power generation, especially wind power generation, has the characteristics of intermittency and volatility, which also brings challenges to the security and stability of the power grid

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