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Fan-shaped heliostat field arrangement method for tower type solar unit

A technology of tower-type solar energy and layout method, which is applied in the directions of instruments, data processing applications, forecasting, etc., and can solve problems such as strong solar radiation dispersion, increased efficiency loss, and low energy flow density

Active Publication Date: 2016-04-06
内蒙古电力勘测设计院有限责任公司
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AI Technical Summary

Problems solved by technology

The problem of strong solar radiation dispersion and low energy flux density is insurmountable. At present, the field efficiency loss of heliostats is about 30% to 40%, and as the size of the field increases, the efficiency loss also increases.

Method used

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  • Fan-shaped heliostat field arrangement method for tower type solar unit
  • Fan-shaped heliostat field arrangement method for tower type solar unit
  • Fan-shaped heliostat field arrangement method for tower type solar unit

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Embodiment Construction

[0052] Such as figure 1 As shown, the current layout of the tower heliostat field generally includes fan-shaped, parallel, and circular layouts. For each layout, there are two types of staggered and non-staggered arrangements. For example, the Gima Power Station in Spain adopted a circular layout plan, the National Energy Technology Research Center of Australia CSIRO adopted a parallel layout plan, and the Badaling Solar Experimental Power Station of the Institute of Electrical Engineering of the Chinese Academy of Sciences, and the PS10 and PS20 power stations in Spain adopted a fan layout plan.

[0053] The technological innovation trend of the heliostat field is mainly in the optimization design of the heliostat field, and the design goal of the heliostat field is to increase the efficiency of the mirror field as much as possible. Increasing the efficiency can increase the light-to-electric conversion efficiency of the solar tower thermal power station. The optical efficiency...

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Abstract

The invention, which belongs to the technical field of the heliostat arrangement optimization, provides a fan-shaped heliostat field arrangement method for a tower type solar unit. The method comprises: S1, a feature size Dm of a heliostat is determined; S2, a minimum distance Lmin and a maximum distance Lmax between the heliostat and a power tower in heliostat field arrangement are determined; S3, on the basis of the latitude of location of the heliostat field, the heliostat field is determined to be divided into two parts of optimal factors rho according to the distances; and S4, when the distance between the heliostat and the power tower is between the Lmin and rho*Htower, arrangement is carried out by using an arrangement method for a heliostat array approaching the power tower in a small-scale heliostat field and a large-scale heliostat field; and when the distance between the heliostat and the power tower is between the rho*Htower to Lmax, arrangement is carried out by using an arrangement method for a heliostat array far away from the power tower in a large-scale heliostat field. According to the method, the traditional fan-shaped heliostat field is arranged in an optimized mode by combining two kinds of arrangement methods according to different characteristics of solar radiation losses, thereby improving the integrated optical efficiency of the heliostat field.

Description

Technical field [0001] This application relates to the technical field of heliostat field arrangement, and in particular to a method for arranging a fan-shaped heliostat field of tower solar energy. Background technique [0002] Photothermal solar energy collects solar radiant energy using a concentrating heat collection system and converts it into heat energy; solar energy first heats a high-temperature heat carrier medium, and then the high-temperature heat carrier medium heats water into superheated steam through heat exchange, combined with other process systems, To achieve the purpose of heating, steam and power generation. Another advantage of this kind of solar energy utilization system is that it uses molten salt and other media to store solar energy in the form of heat energy through the energy storage system, and release it when needed. Solar tower power generation is the applied tower system. Tower system is also called centralized system. It is equipped with many l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06Y02E40/70Y04S10/50
Inventor 闫晓宇王小春寇建玉
Owner 内蒙古电力勘测设计院有限责任公司
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