Fused salt heat storage photo-thermal power station operation optimization system and method

A technology for photothermal power plants and operation optimization, applied in solar heating systems, solar thermal storage, solar thermal power generation, etc., can solve problems such as high power generation costs and restrictions on large-scale development

Active Publication Date: 2021-06-08
NORTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP
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  • Application Information

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Problems solved by technology

Due to the adjustable and controllable load, solar thermal power plants are considered to have the potential to replace coal power as a form...

Method used

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  • Fused salt heat storage photo-thermal power station operation optimization system and method
  • Fused salt heat storage photo-thermal power station operation optimization system and method
  • Fused salt heat storage photo-thermal power station operation optimization system and method

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Experimental program
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Effect test

Embodiment 1

[0038] Photothermal power station 1 is a tower-type molten salt photothermal power station with a capacity of 50MW and a rated power generation efficiency of 43.5%. Sunrise on January 24, 2020 will be at 8:00. The solar irradiance throughout the day is image 3 shown. According to the predicted temperature and humidity information of the day, the full-day power generation in the conventional operation mode is about 772,000 kilowatt-hours. After adopting the optimization method of the present invention, through the prediction of the ambient temperature, ambient humidity, and solar radiation intensity by the meteorological data prediction system, combined with the data of the molten salt turntable detection system, input the data module of the power generation load optimization system, and use the calculation of the power generation load optimization system The module calculates all possible combinations of power generation conditions, and obtains the optimal power generation ...

Embodiment 2

[0040] Photothermal power station 2 is a trough molten salt photothermal station with a capacity of 100MW and a rated power generation efficiency of 39.8%. Sunrise on April 15, 2020 will be at 7:30. The solar irradiance throughout the day is Figure 4 shown. According to the predicted temperature and humidity information of the day, the conventional full-day power generation is about 1.4204 million kilowatt-hours. After adopting the optimization method of the present invention, through the prediction of the ambient temperature, ambient humidity, and solar radiation intensity by the meteorological data prediction system, combined with the data of the molten salt turntable detection system, input the data module of the power generation load optimization system, and use the calculation of the power generation load optimization system The module calculates all possible combinations of power generation conditions, and obtains the optimal power generation combination with the larg...

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PUM

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Abstract

The invention discloses a fused salt heat storage photo-thermal power station operation optimization system and method. The method comprises the steps of calculating all-day collectable total heat and optimization boundary conditions of all-day time periods according to meteorological data and fused salt state data, and according to the total heat and the boundary conditions, by taking the maximum all-day power generation as a principle, calculating all possible all-day period power generation working condition combinations through iteration; generating a load curve according to the working condition with the maximum generating capacity, and generating a load instruction according to the load curve; and controlling operation parameters of a power station according to the load instruction to realize all-day operation optimization of a fused salt heat storage photo-thermal power station. According to the method, more power can be generated in the time period with higher efficiency, less power can be generated in the time period with lower efficiency, the power generation output is improved under the condition of certain heat, the overall power generation efficiency is improved, the power generation load in part of time periods is reduced, the power generation duration is prolonged, power can be continuously generated in the whole time period in part of days, and energy consumption in the shutdown process of the power station and the starting process of the second day is avoided.

Description

technical field [0001] The invention belongs to the field of solar thermal power generation, and in particular relates to an operation optimization system and method for a photothermal power station with molten salt heat storage. Background technique [0002] Solar thermal power generation is generally equipped with a large-scale heat storage system, which can stabilize output when solar resources fluctuate, and can continue to use heat storage to generate power after the sun goes down. Due to the adjustable and controllable load, solar thermal power plants are considered to have the potential to replace coal power as a form of basic energy generation. However, the high cost of power generation of solar thermal power plants currently limits its large-scale development. [0003] It is necessary to reduce the cost of power generation and increase the income. It is a practical method to increase the power generation on the basis of the existing power station. At present, solar...

Claims

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Application Information

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IPC IPC(8): F24S20/20F24S50/80F24S60/30G06Q10/04G06Q50/06
CPCF24S20/20F24S50/80F24S60/30G06Q10/04G06Q50/06Y04S10/50Y02E40/70
Inventor 张智博
Owner NORTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP
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