A Alternative Target Point Determination Method for Tower Mirror Field

A technology for determining the method and target point, which is applied in the field of solar photothermal utilization, and can solve the problems of focusing on the spot shift and influence of the heat absorber.

Active Publication Date: 2019-08-06
DONGFANG BOILER GROUP OF DONGFANG ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] During the operation of the tower power station, the mirror field stops tracking the sun due to a sudden power failure, which causes the light spot that should be focused on the heat sink to shift, and affects other equipment integrated on the tower in a short time

Method used

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  • A Alternative Target Point Determination Method for Tower Mirror Field
  • A Alternative Target Point Determination Method for Tower Mirror Field
  • A Alternative Target Point Determination Method for Tower Mirror Field

Examples

Experimental program
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Embodiment Construction

[0021] Such as figure 1 with figure 2 As shown, the following takes the circular heat absorber as the object to describe the setting method of the backup target point in detail:

[0022] First divide the mirror field into N areas, and assume that the whole mirror field has N backup points. For the time being, each mirror field partition corresponds to a spare target point. In engineering projects, it is not limited to this according to the needs, and it can be many to one or One-to-many mode.

[0023] During the design process of the backup target point, the safety of power failure is considered. After power failure, the heliostat stops running, the attitude is fixed, the sun shifts from east to west with time, and the light spot spreads eastward after power failure. Therefore, for To avoid scattered light spots from irradiating the equipment on the heat absorption tower, the spare target point should be set in the east of the tower. The innermost circle in the figure indi...

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Abstract

The invention discloses a method for determining a spare target point for a tower mirror field. The method comprises the following steps that firstly, the mirror field is partitioned; secondly, a mirror field boundary point is determined by using a boundary line of each mirror field partition; thirdly, the radius of a hazardous area is calculated; fourthly, two circle tangents crossing the mirrorfield boundary point are determined; and fifthly, the intersecting point of the two circle tangents is worked out, and the spare target point corresponding to the area is obtained. Compared with the prior art, the method has the beneficial effects that the spare target point is determined by the adoption of the method, it can be ensured that a heat absorber is rapidly put into and withdrawn from the mirror field, it also can be ensured that the heat absorber and equipment near the heat absorber operate safely when the power is lost, and an important role is played in the operation process of atower power plant.

Description

technical field [0001] The invention belongs to the technical field of solar photothermal utilization, and in particular relates to a method for determining a spare target point for a tower-type mirror field. Background technique [0002] Tower-type solar thermal power generation technology uses a large number of heliostats that independently track the sun, reflects solar radiation to a heat absorber installed on the top of a high tower, and heats the working fluid in the heat absorber, thereby utilizing the thermal energy of the high-temperature medium Power generation, with the advantages of large concentration ratio and high operating temperature. Among them, the heat absorber is the key equipment for photothermal conversion, and its safe operation affects the safety of the entire photothermal power station. [0003] In the tower solar thermal power generation system, the heliostats track the sun under the control of the corresponding control system and concentrate the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24S50/20G06F17/12
CPCY02E10/40
Inventor 王娟娟奚正稳华文瀚何杰蒋超猛孙登科
Owner DONGFANG BOILER GROUP OF DONGFANG ELECTRIC CORP
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