A method of calculating energy interval of photovoltaic module

Abstract

The invention discloses a method for calculating an energy interval of a photovoltaic module. The method is characterized in that in combination with the local latitude of a to-be-installed photovoltaic module, all installation angles to be applied are sequentially substituted into a calculation model, whether the calculation result of the calculation model is not smaller than a given energy interval percentage is judged, and the installation angles meeting the judgment condition are included in an energy interval. The invention further provides three specific models, namely an ideal energy interval model, an improved energy interval model and a single-parameter energy interval model, so as to adapt to known conditions or conditions of various regions with different requirements. The method for an energy interval of a photovoltaic module has the advantages of few related variables, simplicity, rapidness and high accuracy, does not need to use local actual radiation quantity as input, omits long-time radiation data measurement and complex formula analysis and programming simulation, has great practical significance for rapid design or acceptance of photovoltaic module installation,and is particularly suitable for regions lack of meteorological data.

Description

technical field [0001] The invention relates to the field of photovoltaic module installation, in particular to a method for calculating the energy range of a photovoltaic module. Background technique [0002] The massive consumption of traditional energy has resulted in a global energy crisis and environmental pollution, which has led to people's continuous attention, research and application of renewable energy in recent years. Among them, photovoltaic technology is gradually becoming an increasingly important power supply technology. In 2017, the total installed capacity of photovoltaics in the world increased by nearly one-third to 402GW, and the new photovoltaic capacity in this year exceeded the sum of new fossil energy power generation and nuclear power generation. [0003] The amount of radiation received by the inclined surface of fixed photovoltaic modules is related to many factors, such as local climate, installation angle, shadow and ground reflectivity. In or...

AI Technical Summary

Problems solved by technology

However, this method has three disadvantages. The first is that it must use local radiation as input, and the radiation measurement equipment is expensive and the cycle is long, and radiation data is still lacking in most parts of the world; the second is that the process involves more than a dozen complicated methods. For non-researchers, this process is time-consuming and laborious; the third is the process of simulating all possible installation angles (inclination angle 0°~90°, azimuth angle -180°~+180°) Will take a long time and a lot of computer storage space

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