Photovoltaic system power generation power prediction device and method based on meteorological parameter and solar panel operation state parameter

Abstract

The invention discloses a photovoltaic system power generation power prediction device and method based on a meteorological parameter and a solar panel operation state parameter. The device is characterized in that the device comprises a field data collection system and a master-control room data processing system, wherein the field data collection system comprises first to Nth monitoring units which have the same structure; each monitoring unit comprises a photovoltaic subarray which is connected with a combiner box; the combiner box is connected with an intelligent electric meter; the intelligent electric meter is connected with a monitor; the monitors of the first to Nth monitoring units are communicated through a wireless serial port module; the master-control room data processing system comprises a data receiving processor connected with a capture card; the capture card is connected with an industrial personal computer; the sensor of an aerometeograph is connected with a case; and the monitors of the first to Nth monitoring units of the field data collection system are all communicated with the data receiving processor of the master-control room data processing system through the wireless serial port module.

Description

technical field [0001] The invention relates to photovoltaic system power generation prediction technology, in particular to a photovoltaic system power generation prediction device and method based on meteorological parameters and solar battery panel operating state parameters. Background technique [0002] In recent years, under the background of global warming, vigorously developing renewable energy to replace fossil energy has become the general trend of energy transformation in many countries, and energy-saving and environmentally friendly power generation methods are increasingly favored by countries. Among the many alternative types of renewable energy currently available, solar energy is undoubtedly one of the most ideal energy sources in the future world, and occupies an important position in the medium and long-term energy strategies of various countries. The development of the "13th Five-Year Plan" clearly stated: During the 13th Five-Year Plan period, more than 15...

AI Technical Summary

Problems solved by technology

According to the statistics of large-scale photovoltaic power generation systems around the world, dust accumulation can lead to a significant drop in the power generation efficiency of solar panels, and the annual cumulative power generation of photovoltaic systems will be reduced by 10% to 25%.

The impact of the operating state of solar panels on the power generation efficiency and power generation of photovoltaic systems includes the following three aspects: (1) It is inaccurate to predict the power generation of photovoltaic systems without considering the operating state parameters of solar panels; In the case of different degrees of dust pollution on the surface area, the power generated by using a single constant power generation efficiency value is also inaccurate; (3) temperature is also a major factor affecting power generation efficiency, because the operating temperature of solar panels is different, two in winter and summer Under the same irradiance in seasons, the power generation power of photovoltaic systems also varies significantly

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