A parameter calculation method for a double-sided photovoltaic module system
A photovoltaic module and parameter calculation technology, applied in the field of solar photovoltaic power generation, can solve problems such as shortage, achieve the effect of reducing costs and improving product power generation efficiency
Active Publication Date: 2021-11-05
ARCTECH SOLAR HLDG CO LTD
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But how to set the size, position, and posture of the reflector, and how to choose the specifications and postures of double-sided photovoltaic modules, and how to adjust product parameters for modules of different specifications and project latitudes, so as to maximize the sunlight resources There is still a lack of detailed research on relevant content
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[0064] In one embodiment, the time may be divided into several segments, and the shading efficiency, truncation rate, or cosine efficiency of each time segment takes an empirical value, and the empirical values of different time segments may be different.
[0065] Preferably, a more accurate calculation method is used for some or all of the occlusion efficiency, truncation rate, and cosine efficiency, as follows:
[0066] 1) Calculate the shading efficiency of the component to the reflector according to the following formula :
[0067] ;
[0068] in, is the component shadow length, is the mirror shadow length, is the local elevation angle of the sun, h is the distance between the horizontal line at the bottom of the module and the horizontal line at the center of the reflector, is the lateral length of the mirror, β is the inclination angle of the mirror, and d is the distance between the component and the mirror.
[0069] The component shadow length can be calc...
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The invention provides a parameter calculation method of a double-sided photovoltaic module system. The system adopts support tracking technology. The parameter calculation method includes: calculating the energy utilization efficiency of the reflector; According to the energy utilization efficiency of the mirror, calculate the solar radiant energy collected by the photovoltaic module at the corresponding time; according to the solar radiant energy collected by the photovoltaic module at each moment in the annual cycle, the annual solar radiant energy collected by the double-sided photovoltaic module is obtained; according to the annual solar radiant energy The objective function is obtained, and the objective function is one or more of the annual solar radiation energy, the annual solar radiation energy density, and the levelized cost of electricity; the product parameter combination that optimizes the objective function is selected as the target parameter combination. The invention provides a quantitative basis for product parameter selection of the double-sided photovoltaic module system, can improve the power generation efficiency of the double-sided photovoltaic module system, and reduce costs.
Description
technical field [0001] The invention relates to the technical field of solar photovoltaic power generation, in particular to a method for calculating parameters of a double-sided photovoltaic module system. Background technique [0002] Double-sided photovoltaic modules and support tracking technology is a system solution with high power generation efficiency and low cost of electricity. In order to further improve system power generation efficiency and reduce cost of electricity, in double-sided photovoltaic module systems with installation gaps, Reflective materials such as mirrors can supplement light and increase energy on the back of the double-sided photovoltaic module, which can further stimulate the power generation potential of the back of the double-sided photovoltaic module. But how to set the size, position, and posture of the reflector, and how to choose the specifications and postures of double-sided photovoltaic modules, and how to adjust product parameters fo...
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IPC IPC(8): G06F17/10
CPCG06F17/10
Inventor 王士涛周俊兵马丽君
Owner ARCTECH SOLAR HLDG CO LTD