Tower type solar thermal power station mirror field scheduling period optimization method
A tower solar energy and scheduling cycle technology, applied in the fields of genetic laws, instruments, data processing applications, etc., can solve problems such as efficiency loss, and achieve the effect of increasing absorbed energy and reducing energy loss
Active Publication Date: 2017-09-05
ZHEJIANG UNIV
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Problems solved by technology
[0004] In the existing methods for setting the mirror field scheduling cycle, most of the mirror field scheduling parameters are artificially set, resulting in a lot of unnecessary loss of efficiency
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Embodiment Construction
[0031] Such as figure 1 As shown, a tower-type solar thermal power station mirror field scheduling cycle optimization method, the implementation steps are as follows:
[0032] (1) The optimization goal is to increase the absorbed energy of the heat absorber and reduce the operating cost of the heliostat, and the energy uniformity of the heat absorber is constrained to construct an optimization problem.
[0033] In order to optimize the scheduling cycle of the mirror field, it is necessary to determine the focus points of all heliostats at each moment at the same time. When the standard deviation of the absorber plane energy flux density is less than a fixed value, the heat absorber within the optimal time period can be achieved. The purpose of maximizing the received energy and minimizing the energy consumed by the motor for changing the focal point of the heliostat; the corresponding optimization problem is:
[0034]
[0035] Among them, t in is the scheduling period, wh...
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The invention discloses a tower type solar thermal power station mirror field scheduling period optimization method comprising the following implementation steps that (1) the optimization problem is constructed with increasing the absorbed energy of a heat absorber and reducing the rotating energy consumption of a heliostat acting as the optimization objectives and uniform energy distribution of the heat absorber acting as the constraint condition; (2) the optimization problem in the step (1) is converted into internal and external layers of optimization problems; and (3) the external layer optimization problem is solved by using a taboo algorithm, and the internal layer optimization proposition is solved by using a genetic algorithms so that the optimal scheduling period within the optimization period of time can be obtained. According to the tower type solar thermal power station mirror field scheduling period optimization method, the energy loss caused by angular rotation of the heliostat can be reduced and the absorbed energy within the time period can be increased under the condition of guaranteeing the safety of the heat absorber so that a novel optimization method can be provided for setting the whole mirror field scheduling period.
Description
technical field [0001] The invention relates to the field of tower-type solar thermal power plants, in particular to a method for optimizing the scheduling period of a mirror field of a tower-type solar thermal power station. Background technique [0002] The tower-type solar thermal power station uses many heliostats that independently track the sun to focus the sunlight on a heat absorber fixed on the top of the receiving tower, heat the heat transfer medium flowing through the heat absorber, and then use the high-temperature medium to Heat energy drives steam turbines and generators to generate electricity. It is the lowest cost of all large-scale solar power generation technologies and has a wide range of application prospects. [0003] The concentrating and heat-collecting subsystems in tower-type solar thermal power plants, including the heliostat field and the heat absorber installed on the receiving tower, have always been the focus of research. For the scheduling ...
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IPC IPC(8): G06Q10/04G06Q50/06G06N3/12
CPCG06N3/126G06Q10/04G06Q50/06Y02E40/70Y04S10/50
Inventor 赵豫红赵茜
Owner ZHEJIANG UNIV