Photovoltaic energy-wind power-methane-based rural household energy system and control method thereof

Abstract

The invention relates to the new energy microgrid technology and is to provide a photovoltaic energy-wind power-methane-based rural household energy system and a control method thereof. According to the system, a methane tank serves as an intermediate device to enable a methane generator, a micro gas turbine and a household gas stove to be connected, and carbon dioxide generated by the micro gas turbine and carbon dioxide generated by the household gas stove are fed back to the methane generator to serve as raw material for generating the methane, thereby realizing a complete chain of methane generation, storage, consumption and exhaust feedback, and forming gas interconnection; and meanwhile, with the methane generator serving as a controllable load and the micro gas turbine serving as a controllable power source, an energy management device carries out power scheduling on the micro gas turbine and the methane generator, and the methane serves as an energy buffer to ensure power utilization stability. In the whole circulation process, lowest carbon emission and maximum utilization of renewable energy sources are realized, thereby protecting environment and helping rural residents to save electricity cost.

Description

technical field [0001] The invention belongs to new energy micro-grid technology, and in particular relates to a rural household energy system based on photovoltaic-wind power-methane mixing and a control method thereof. Background technique [0002] The power consumption of rural residents belongs to the three types of loads. In the peak period of power system power consumption, there is often insufficient power supply. In addition, the vast rural areas are rich in light and wind resources, so making good use of these renewable resources can help improve rural residents’ consumption. electricity problem. In addition, the development of renewable energy such as photovoltaics and wind power can reduce the consumption of fossil energy, reduce carbon emissions, and protect the environment. However, the volatility of renewable energy has brought huge challenges to the planning of the power grid and the consumption of renewable energy itself. [0003] In order to promote the co...

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Problems solved by technology

The energy storage battery charges and stores electric energy when the output of renewable energy is sufficient, and generates and compensates electric energy when the output of renewable energy is insufficient. It can be used in large-scale occasions; hydrogen production technology can use excess electric energy to electrolyze water to make hydrogen and store it when the output of renewable energy is sufficient, and use hydrogen to generate electricity when the output of renewable energy is insufficient. The hydrogen production technology is cheap and affordable, but its impact on electric energy High quality requirements, not suitable for large fluctuations in renewable energy, so the development is also subject to certain restrictions

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