A mountain photovoltaic project array spacing calculation method and system

Abstract

The invention discloses a mountain photovoltaic project array spacing calculation method, which comprises the following steps: constructing an azimuth map, and setting the gradient of a photovoltaic array slope required to be set and the solar azimuth at the longest shadow moment generated by annual irradiation in the azimuth coordinate of the azimuth map; Calculating a component of the slope in the azimuth direction of the sun, a component of the horizontal coordinate and a component of the vertical coordinate; And based on the gradient component and the geometric relationship between the adjacent photovoltaic arrays, calculating the photovoltaic array spacing. The invention also discloses a corresponding system. According to the invention, the influence of the slope component in the azimuth direction of the sun on the photovoltaic array is considered; the method is simple; The photovoltaic array spacing under the conditions of different slope directions and gradients can be calculated more accurately, the rule that the photovoltaic array spacing changes along with the slope directions under the conditions of different gradients is obtained through the method, and practical and effective help can be provided for early-stage site selection and design-stage economic optimization and comparison selection of mountain photovoltaic projects in future.

Description

technical field [0001] The invention relates to a method and system for calculating the array spacing of mountainous photovoltaic projects, belonging to the field of photovoltaic power generation. Background technique [0002] With the continuous advancement of the country's de-subsidy policy for the photovoltaic industry, the photovoltaic grid-connected electricity price has gradually decreased. How to further reduce the cost of photovoltaic construction to promote the development of the photovoltaic industry is an urgent problem to be solved. There are many mountainous and hilly areas in our country. Due to the large undulations of the terrain, most of them are not suitable for agricultural planting, and the land use value is relatively low. At present, most of them exist in a state of abandonment. If this part of the land is used for photovoltaic construction, on the one hand, it can reduce the land use cost of photovoltaic construction, and on the other hand, it can incr...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method and system for calculating the array spacing of mountainous photovoltaic projects, which solves the problem that the traditional method ignores the influence of the slope component in the direction of the sun's azimuth angle on the spacing of photovoltaic arrays, and the established mathematical model is difficult to apply

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