Optimization method of field focusing strategy for heliostats in tower solar thermal power plant
A technology of tower solar energy and optimization method, which is applied to solar thermal power generation, solar thermal energy, solar thermal collectors, etc., can solve problems such as time-consuming calculation of heliostat reflected energy distribution, low-precision approximate calculation, and reduction of power generation efficiency of power stations. , to achieve the effect of improving net power generation efficiency, reducing energy consumption and improving power generation efficiency
A technology of tower solar energy and optimization method, which is applied to solar thermal power generation, solar thermal energy, solar thermal collectors, etc., can solve problems such as time-consuming calculation of heliostat reflected energy distribution, low-precision approximate calculation, and reduction of power generation efficiency of power stations. , to achieve the effect of improving net power generation efficiency, reducing energy consumption and improving power generation efficiency
CN111736467BActive Publication Date: 2021-04-30ZHEJIANG UNIV
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[0035]In this example, the Sky Mirror in the Spanish PS10 Tower Solar Hot Power Station Mirror Mirror is optimized, and the overall method process isfigure 1 Indicated. The specific parameters of the power station are listed in Table 1, the mirror layout is likefigure 2 Indicated.
[0036]Table 1 Mark field parameters in the embodiment
[0037]
[0038](1) Establish a multi-objective point focus optimization model of fixed day mirror field. Set up 16 rectangularly arranged focus target points on the receiver plane, the location of the target point isimage 3 Indicated. The sampling point when calculating the energy distribution is also used in rectangular arrangement, 20, specific positions such asFigure 4 Indicated. At each scheduled moment of the mirror field, the correspondence between each surface day mirror and the target point in the mirror field can be determined that the decision variable of optimization problem can be represented as 0-1 variable z.h, a , When the focus target point o...
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The invention discloses a method for optimizing a heliostat field focusing strategy of a tower-type solar thermal power station. In this method, the relationship between the heliostat and the focal point is used as the decision variable to maximize the total energy on the receiver, and the variance of the energy distribution on the receiver is used as a constraint to establish a nonlinear integer programming problem for heliostat focusing. Then, a fast solution method is adopted to select some heliostats with large overflow loss, pre-calculate the imaging distribution when it focuses on different target points, and relax the energy distribution variance constraint to the sampling point energy density difference constraint, and establish a linear Integer programming subproblem. Finally, gradually increase the number of heliostats to be scheduled, and solve a series of the above sub-problems until the energy distribution variance constraints are met. The method of the present invention can maximize the total energy obtained on the receiver and evenly distribute it in the real-time scheduling of the mirror field of the tower-type solar thermal power station, improve the power generation efficiency and ensure the safe operation of the equipment, and solve the problem quickly to meet the real-time control requirements.
Description
Technical field[0001]The present invention relates to the field of tower solar thermal power plants, and more particularly to a tower solar thermal power station setting day mirror field focus strategy optimization method.Background technique[0002]The tower solar thermal power station is a large-scale concentrating power generation device, mainly composed of fixed day mirrors, receiving tower, receiver, heat exchange device, heat storage device, and thermal power generation device, and its working principle is by a certain amount of Dingjing mirror gather solar light to the receiver of the top of the column to produce a high temperature, and the heat flow is directly generated in the receiver, or the heat transfer medium is transferred to water vapor through the heat transfer medium, and push the steam turbine. . Since there is a large concentration ratio (generally up to 300 to 1500), the operating temperature (can be 500 ° C ~ 1500 ° C), the tower solar thermoelectric system is cu...
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Patent Timeline
30 Apr 2021
Publication
CN111736467B
- IPC
- G05B13/04; F24S50/20
- CPC
- F24S50/20; F24S2050/25; G05B13/042; Y02E10/47
- Inventors
- 赵豫红; 胡闹