Mismatch loss calculation method and device, equipment and storage medium

Abstract

The invention discloses a mismatch loss calculation method and device, equipment and a storage medium. The back surface of the double-sided assembly is divided to obtain at least one area; the back face of the double-face assembly is the face, back to a light source, of the double-face assembly. For each area, the ideal irradiance of the area in the state that the back face is not provided with the support and the actual irradiance of the area in the state that the back face is provided with the support are determined; and the mismatch loss of the back surface is determined according to the ideal irradiance of each region and the actual irradiance of each region. According to the technical scheme, a new thought is provided for calculation of the mismatch loss of the back face of the double-face assembly, and meanwhile support is provided for design of a related system for subsequently improving the generating capacity by evaluating the shielding influence of the supporting object on the double-face assembly.

Description

technical field [0001] The embodiments of the present application relate to the technical field of solar energy, and in particular to a mismatch loss calculation method, device, equipment, and storage medium. Background technique [0002] Different from conventional single-sided photovoltaic modules, bifacial modules can be a type of solar module that can realize power generation on both sides. The radiation reception on the back of the bifacial power generation module is affected by the installation conditions, such as the installation height, the distance between the front and rear rows, the installation inclination and the reflectivity of the ground scene. The viewing angle coefficients are different, and the radiation on the back of the bifacial module is unevenly distributed. Under the non-ideal state, the radiation inhomogeneity on the back of the bifacial module is affected by the shading of supports (such as brackets, cement piers), etc., which will aggravate the une...

AI Technical Summary

Problems solved by technology

The radiation reception on the back of the bifacial power generation module is affected by the installation conditions, such as the installation height, the distance between the front and rear rows, the installation inclination and the reflectivity of the ground scene. The viewing angle coefficients are different, and the radiation on the back of the bifacial module is unevenly distributed. Under the non-ideal state, the radiation inhomogeneity on the back of the bifacial module is affected by the shading of supports (such as brackets, cement piers), etc., which will aggravate the uneven distribution on the back of the module. , which further expands the mismatch loss on the back of the bifacial module

[0003] In the case of traditional photovoltaic modules for power generation, backside power generation also needs to be considered, but due to installation conditions, the backside radiation of double-sided modules is unevenly distributed, causing mismatch losses

In the prior art, when calculating the mismatch loss of bifacial power generation modules, only the loss of the overall photovoltaic module is considered, and the backside mismatch loss caused by the installation conditions of the bifacial modules is not considered separately, or only the bifacial group loss in the ideal installation state is considered. Matching loss, does not consider the mismatch loss caused by obstructions such as brackets

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