Energy complementation self power supply system and power supply method

Abstract

The invention discloses an energy complementation self power supply system, which comprises a solar energy power generation device, a wind energy power generation device, a methanol-water reforming hydrogen production power generation module, an AC DC power conversion device, an electrolytic hydrogen production device, a first methanol synthesis device, a methanol-water storage and conveying device and a load, wherein the solar energy power generation device and the wind energy power generation device provide power for the load and the electrolytic hydrogen production device; the electrolytic hydrogen production device is used for electrolyzing water for hydrogen production, the produced hydrogen is fed to the first methanol synthesis device for synthesizing methanol, in the condition of not sufficient solar energy and wind energy, the synthesized methanol is conveyed to the methanol-water reforming hydrogen production power generation module for hydrogen production and power generation, and power is provided for the load; and the methanol-water reforming hydrogen production power generation module comprises a reformer and a fuel cell, methanol and water are subjected to a reforming hydrogen production reaction in the reformer, the produced hydrogen is fed to the fuel cell, and in the fuel cell, the hydrogen and oxygen in the air are subjected to an electrochemical reaction, and power output is generated. Multiple energies generate power in a complementary mode, power supply continuity is good, and control is easy.

Description

technical field [0001] The invention relates to the technical field of power generation equipment, in particular to an energy complementary self-power supply system and a power supply method suitable for independent areas such as manors and islands. Background technique [0002] At present, the traditional power supply method is the electric energy generated by centralized large-scale power plants (such as thermal power plants, hydropower plants, and nuclear power plants), and supplies power to users through long-distance multi-level transmission of the power system. However, areas that are difficult to cover with conventional power grids, such as It is difficult for users in independent areas such as islands and manors to use traditional power supply methods, so the demand for self-powered systems in these areas is increasing. In the prior art, different methods can be used for power generation in self-powered systems, such as solar power, wind power, diesel generators, and...

AI Technical Summary

Problems solved by technology

For example, (1) Chinese invention patent application 201010553641.1 discloses an independent power supply system using multiple energy sources for complementary power generation, which realizes the complementary power generation of wind power generators, solar photovoltaic panels and diesel generators. Although the power supply system can achieve different Using a variety of renewable resources for continuous power supply under environmental conditions, but still relying on diesel generators for power generation; (2) Chinese invention patent application 201210336607.8 discloses a multi-clean energy complementary micro power station, including battery packs, inverters, multiple Fuel engines, generators, wind power generators, hydroelectric generators and solar panels, this invention patent uses the energy storage of batteries to achieve continuous power supply, but the batteries only play a buffer role. If it is not enough, it will be difficult to achieve continuous and stable power supply; (3) Chinese invention patent 200910065233.9 discloses a solar-biomass-hydrogen coupled complementary power generation method. When the sun is in the sun, biomass energy is used to generate electricity alone. During the power generation process, methanol is synthesized, then heated by a solar heater, and decomposed into H 2 and CO, enter the biomass gas generator to generate electricity and release high-temperature exhaust gas, and the high-temperature exhaust gas enters the waste heat boiler to generate water vapor in the boiler, thereby driving the generator to rotate at a high speed to generate electricity. However, in the power generation process of this power generation method, synthetic Methanol still needs to be heated and decomposed into H by using a solar heater 2 and CO, and then enter the biomass gas generator to generate electricity, so it is greatly restricted by solar energy. At the same time, it is difficult to control the power generation of the biomass gas generator. Using high-temperature exhaust gas to make the boiler generate water vapor and then drive the generator to generate electricity is more efficient. Difficult to control and very poor stability

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