Method and device for measuring the reflectivity of a heliostat

A measurement method, heliostat technology, applied in the direction of scattering characteristics measurement, color/spectral characteristics measurement, etc., can solve the problems affecting the design and operation of solar power plants, and the measurement deviation of heliostat reflectivity, so as to achieve no dependence on light source, measurement Precise, wide-ranging effects

Active Publication Date: 2022-02-18
ZHEJIANG SUPCON SOLAR TECHNOLOGY CO LTD
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Problems solved by technology

This method relies heavily on the light source and requires the original intensity of the light source to be consistent throughout the shooting process. However, due to the impact of actual use and production of the current light source, the original intensity of the light source may be different at different times, which will lead to the measurement of the reflectivity of the heliostat. Deviation, and ultimately affect the design and operation of the entire solar power plant

Method used

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  • Method and device for measuring the reflectivity of a heliostat
  • Method and device for measuring the reflectivity of a heliostat
  • Method and device for measuring the reflectivity of a heliostat

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Embodiment 1

[0043] see figure 1 , the present embodiment provides a method for measuring the reflectivity of a heliostat, comprising the following steps:

[0044] S1: constructing an optical cavity by placing the first heliostat and the second heliostat in parallel;

[0045] S2: The light beam is received on the first heliostat side of the optical cavity, the light beam passes through the first heliostat and oscillates back and forth between the first heliostat and the second heliostat, and oscillates on the second heliostat of the optical cavity Side output oscillating beam;

[0046] S3: measuring the spectrum of the oscillating beam to obtain an oscillating spectrum signal;

[0047] S4: Calculate and obtain the ring-down ratio according to the light intensity data of the oscillation spectrum signal, and calculate and obtain the reflectance to be measured according to the ring-down ratio.

[0048] Now specifically describe this implementation in detail:

[0049]Specifically, the lig...

Embodiment 2

[0077] see figure 2 , the present embodiment provides a heliostat reflectivity measurement device based on Embodiment 1, including: a pulsed light source 1, a beam expander module 2, an optical cavity, a beam shrinker module 5, a spectrum receiving module 6, and a data processing module;

[0078] The beam expansion module 2 is used to expand the diameter of the original beam emitted by the pulse light source 1, and output the expanded beam;

[0079] The optical cavity includes a first heliostat 3 and a second heliostat 4 arranged parallel to each other. The optical cavity is used for the back-and-forth oscillation of the beam, wherein the optical cavity receives the expanded beam on the side of the first heliostat 3, and the expanded beam Through the first heliostat 3, oscillate back and forth between the first heliostat 3 and the second heliostat 4, and output the oscillating beam on the side of the second heliostat 4, wherein the expanded beam covers the first heliostat mi...

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Abstract

The invention discloses a method and a device for measuring the reflectivity of a heliostat. The method includes S1: constructing an optical cavity by placing the first heliostat and the second heliostat in parallel; S2: receiving a light beam at the first heliostat side of the optical cavity, and the light beam passes through the first heliostat at the first fixed Oscillate back and forth between the heliostat and the second heliostat, and output the oscillating beam on the second heliostat side of the optical cavity; S3: Measure the spectrum of the oscillating beam to obtain the oscillating spectrum signal; S4: According to the light intensity of the oscillating spectrum signal Data, calculate and obtain the ring-down ratio, and calculate and obtain the reflectivity to be measured according to the ring-down ratio. Because the method realizes the measurement of the reflectivity of the heliostat by measuring the ring-down ratio of the intensity of light, there is no requirement for the stability of the light source, and no additional calibration work is required. The light source does not depend on the technical characteristics.

Description

technical field [0001] The invention belongs to the technical field of tower-type solar thermal power plants, and in particular relates to a method and device for measuring the reflectivity of a heliostat. Background technique [0002] With the development of the economy, the depletion of fossil fuels and the aggravation of environmental pollution, the energy issue has gradually been paid attention to by people. At the same time, due to the increasing complexity of international relations, energy security has also become one of the looming problems. As a new energy source, solar energy has received increasing attention from the state in recent years. Solar thermal power generation is considered to be one of the most potential power generation methods due to its stable output, controllable energy storage and other reasons. image 3 It is a schematic diagram of the structure of the tower solar thermal power generation system. Its basic form is to heat the working medium through...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/55G01N21/31
CPCG01N21/55G01N21/31
Inventor 颜明明李晓波刘志娟杨都堂宓霄凌张先竹
Owner ZHEJIANG SUPCON SOLAR TECHNOLOGY CO LTD
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