Wind power isolated grid seawater desalination system

Abstract

The invention provides a seawater desalination system of an isolated wind power grid, which belongs to the field of wind power generation and seawater desalination treatment. The system includes: a microgrid subsystem with wind power generation as the main power source; a seawater desalination subsystem connected to the microgrid subsystem and using the electric energy generated by the wind generator to desalinate seawater, and the seawater desalination subsystem The system includes at least one reverse osmosis device and at least one electrodialysis device; and a control subsystem for detecting the water quality of the produced water of the reverse osmosis device. The design method of the wind power isolated grid seawater desalination system of the present invention sets the power supply and load in stages, which can effectively adapt to the fluctuation and intermittent nature of the wind power supply, realize the fine operation of the system with continuous variable load in a large range, maximize the use of wind energy, and reduce reverse osmosis The number of starts and stops of the device prolongs the service life of the system equipment.

Description

Technical field [0001] The invention relates to the field of wind power generation and seawater desalination treatment, in particular to a wind power isolated grid seawater desalination system. Background technique [0002] Fresh water is one of the basic materials for the survival and development of human society, and it is the source of all life. Many remote areas and islands are naturally scarce of fresh water resources, and they can only use brackish water or seawater through desalination to obtain fresh water. [0003] Most mature desalination technologies rely on electric power. Remote areas or islands cannot be introduced into public power grids or the cost of introducing public power grids is too high. However, the use of diesel to generate electricity is not only costly, but also very difficult to transport oil, requires a lot of maintenance, poor reliability, and is not environmentally friendly. Therefore, wind power has become one of the important ways to replace conv...

AI Technical Summary

Problems solved by technology

On the one hand, the power demand of the seawater desalination system is discontinuous, and it also relies heavily on the coordinated control of the energy storage link on the power supply side to maintain the balance between power generation and power consumption of the system in real time; The unqualified water produced in the water wastes electric energy and affects the life of the equipment

At the same time, due to the limitation of the minimum flow rate of the membrane module's own process characteristics, the ability of the system to operate with variable loads in a wide range is restricted.

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