Multistage thermal power generation and poly-generation system based on the complementation of solar energy and other energy sources

Abstract

The present invention aims to provide a distributed multistage thermal power generation system based on the complementation of solar energy and other energy sources. The thermal power generation system comprises solar energy collection systems, solar energy generating units and non-solar energy systems, wherein the solar energy collection systems and the solar generating units form a group of solar power generation system. The thermal power generation system also comprises at least two groups of solar power generation systems and at least one group of non-solar energy systems to provide supplementary energy sources for the solar power generation systems. One group of solar power generation systems can be connected to the other group of solar power generation systems in series and / or in parallel, therefore, the waste heat generated by power generation of the group of power generation systems can be utilized by the other group of power generation systems to realize multistage power generation through utilization of the waste heat. Two groups of solar power generation systems consist of one group of solar low-temperature power generation systems and one group of solar high-temperature power generation systems. With the addition of the equipment for complementation of other energy sources, the thermal power generation system can ensure the supplement and adjustment of energy when the solar energy changes, so as to realize stable and sustainable power generation.

Description

technical field [0001] The invention relates to complementary power generation of solar energy and other energy sources, especially a power generation system and a combined heat and power system that use distributed multi-level solar energy and other energy sources to complement each other. The remaining heat can be used for heating, cooling, drying, hot water and other applications. Background technique [0002] Existing solar power generation mainly includes photovoltaic and photothermal power generation. Photovoltaic power generation requires silicon or other special materials for power generation. Photothermal power generation includes trough type, tower type and butterfly type. Thermal power is mainly large-scale power generation, and it is mainly a single-stage power generation system. Such a power generation system is mainly based on the traditional coal power generation principle, and lacks adaptation to dynamic solar heat sources. In addition, due to the main The co...

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Problems solved by technology

At the same time, due to the fluctuating and uncertain characteristics of solar energy, continuous and stable power generation cannot be achieved. However, a stable power supply is required for grid connection after power generation, otherwise it will pose a threat to the stability and reliability of the power grid. Therefore, stable solar energy is required. generate electricity

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