A photovoltaic and photothermal coupling power generation system and power generation control method
A photovoltaic power generation system and light-thermal coupling technology, applied in the field of solar power generation, to achieve the effects of low energy storage cost, improved real-time control capability, and guaranteed stability
Active Publication Date: 2022-07-15
浙江中光新能源科技有限公司
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[0005] In order to overcome the defects of the prior art, the present invention provides a photovoltaic and photothermal coupled power generation system and a power generation control method. The present invention uses the molten salt energy storage system in the solar photothermal power generation system to provide energy storage for photovoltaic power generation, solving the problem of The problem of high energy storage cost of photovoltaic power plants is solved. At the same time, the power generation control method provided by the invention can accurately regulate the power of photovoltaic and photothermal power generation systems according to the power demand of the power grid, ensuring the stability of the power grid
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[0057] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the inventive concept. These all belong to the protection scope of the present invention.
[0058] like figure 1 , This embodiment discloses a photovoltaic and photothermal coupled power generation system, including a photovoltaic power generation system 1 , a photothermal power generation system 2 , a molten salt electric heating system 3 and a plant-wide control system 4 . in:
[0059] The photovoltaic power generation system 1 is used for photovoltaic power generation, and provides power to the power grid 5 and the molten salt electric heating system 3 through the whole plant control system 4;
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The invention discloses a photovoltaic and photothermal coupled power generation system and a power generation control method; the system includes a photovoltaic power generation system, a photothermal power generation system with molten salt energy storage, a molten salt electric heating system and a plant-wide control system. The whole plant control system distributed control system, automatic power generation control system and artificial intelligence deep learning model system; when the grid load demand is greater than the photovoltaic power generation power, the whole plant control system controls all photovoltaic power generation to be connected to the grid, and solar thermal power generation supplements the insufficient power ; When the grid load demand is less than the photovoltaic power generation power, part of the photovoltaic power generation is connected to the grid, and the excess power is heated by the molten salt for energy storage through electric heating. The energy storage cost of the invention is low, and the power output is controlled by the whole plant control system to meet the demand of the power grid, thereby ensuring the stability of the power grid. In addition, the present invention can continuously update and optimize the deep learning model, improve the real-time control capability of the whole plant, and ensure the safe and stable operation of the whole plant.
Description
technical field [0001] The invention relates to the technical field of solar power generation, in particular to a photovoltaic and light-thermal coupled power generation system and a power generation control method. Background technique [0002] With the rapid development of social economy, energy demand is increasing day by day. Traditional energy produces a lot of pollution in the process of utilization, and solar power generation technology has developed rapidly as a clean and efficient energy supply method. [0003] Solar photovoltaic power generation has the advantages of high photoelectric conversion efficiency and low cost. However, due to the fluctuation of the intensity of sunlight, the power of the photovoltaic power generation system fluctuates greatly, and there is a phenomenon of day and night shutdown, which makes it difficult for photovoltaic power plants to provide a continuous and stable power supply. Energy storage such as lead-acid batteries, energy stor...
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IPC IPC(8): H02J3/38H02J3/46H02J3/28
CPCH02J3/381H02J3/28H02J3/466H02J2203/20H02J2203/10H02J2300/24H02J2300/22Y02E70/30
Inventor 纪培栋李心宋二乔王聪
Owner 浙江中光新能源科技有限公司