Simultaneous equation model-based running optimization method for tower type solar thermoelectric generation system

Abstract

The invention discloses a simultaneous equation model-based running optimization method for a tower type solar thermoelectric generation system. The method comprises the following steps: analyzing each subsystem of the thermoelectric generation system, and establishing a dynamic mathematical model of each subsystem; establishing an overall model of the tower type solar thermoelectric generation system by adopting a simultaneous equation method; constructing an optimization problem by taking the highest benefits of a power station in a day as a purpose and taking upper and lower limits of parameters of the thermoelectric generation system as constraint conditions; solving the optimization problem to obtain an optimal running scheduling strategy for the thermoelectric generation system by utilizing a control vector parameterization method. According to the simultaneous equation model-based running optimization method for the tower type solar thermoelectric generation system, highest benefits of the power station under market electricity price can be ensured, the requirements of normal and safe running of the power station can be met by generation power, heat storage, working medium flow and working medium temperature, the method is favorable for protecting equipment of the power station and improving the stability of the system, and a reference can be provided for the running of a tower type solar thermal power plant.

Description

technical field [0001] The invention relates to the field of tower solar thermal power systems, in particular to an operation optimization method for tower solar thermal power systems based on a simultaneous equation model. Background technique [0002] Solar energy is a renewable new energy with abundant reserves, and has the advantages of being clean, environmentally friendly, sustainable and long-lasting, and has attracted more and more attention from people. Research by the U.S. Department of Energy shows that in the current concentrated solar power generation, the tower type power generation system has a high concentration multiple, which can obtain higher light-to-heat conversion efficiency, and is more likely to replace conventional energy sources and achieve high-power power generation. The main principle of solar thermal power generation is: the heliostat field reflects and focuses sunlight to the collector, heats the working medium in the collector, the working med...

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Problems solved by technology

These optimization methods are not based on the overall mechanism model of the power station, nor do they perform real-time dynamic scheduling based on the overall model. Therefore, they do not consider the changes in various parameters during operation, and cannot perform various parameter changes in the system that affect the stable and safe operation of the system. implement regulation

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