What are the factors that affect solar photovoltaic power generation?

As an important part of renewable energy, photovoltaic power generation has been paid more and more attention and utilization by countries all over the world. However, the efficiency and output of photovoltaic power generation are affected by meteorological conditions.

In photovoltaic power generation system, solar panels convert sunlight into electric energy. This conversion process is directly affected by meteorological factors such as solar radiation, temperature, wind speed and humidity. These parameters required for power generation calculation can be provided by the joint energy big data platform (xihe-energy.com). Next, the influence of meteorological factors on photovoltaic power generation is introduced in detail.

-Solar radiation: The intensity of solar radiation is the primary factor of photovoltaic power generation and has an important influence on photovoltaic power generation. The intensity of solar radiation determines the output of photovoltaic power generation system, and higher solar radiation means more energy input, thus improving power generation. In addition, the angle and prediction of solar radiation also affect the efficiency and planning of photovoltaic power generation. Therefore, adequate solar radiation and reasonable solar radiation management are the key factors to realize efficient photovoltaic power generation.

-Temperature: Temperature has a significant impact on photovoltaic power generation. The increase of temperature will reduce the efficiency of photovoltaic panels, and the output of photovoltaic power generation system will be affected to some extent in high temperature environment. Reasonable heat dissipation design and temperature compensation measures are helpful to reduce the influence of temperature on the efficiency of photovoltaic power generation system and improve the overall performance of the system. Therefore, in the design and operation of photovoltaic power generation system, it is necessary to consider and manage the influence of temperature on the system output.

-Wind speed: Wind speed is very important for the heat dissipation of photovoltaic power generation system. Moderate wind speed can reduce the temperature of photovoltaic panels and improve the efficiency of the system. In addition, the wind speed is also related to the installation structure and stability of photovoltaic modules. Excessive wind speed may affect the stability of photovoltaic modules. Therefore, in the design and layout of photovoltaic power generation system, it is necessary to comprehensively consider the wind speed factor, reasonably select the installation angle and structure of photovoltaic modules, and take appropriate risk management measures to ensure the safe and stable operation of the system.

-Humidity: Humidity mainly affects the heat dissipation effect and atmospheric transparency of photovoltaic system. Higher humidity may lead to water accumulation or condensation on the surface of photovoltaic modules, which reduces the light transmittance and thus reduces the power generation efficiency. But this effect is usually temporary, because under natural conditions, water will evaporate or be evaporated by sunlight.

-Cloud amount: Cloud amount has obvious influence on photovoltaic power generation. The increase of cloud cover will reduce the intensity and stability of solar radiation, thus reducing the output of photovoltaic power generation system. Clouds block the direct sunlight, so that light energy can not be completely absorbed and converted by photovoltaic cells. Especially in dense clouds or heavy rain, the output of photovoltaic power generation will drop significantly.

Based on the meteorological data, a preset photovoltaic power station in a certain geographical location is simulated or the historical power generation curve of a photovoltaic power station is restored in the combined energy big data platform. By defining the location, time, data source and parameters of photovoltaic power station, accurate hourly power curve can be obtained.

Based on historical meteorological data, the platform can accurately calculate the regional lighting resources and give the optimal photovoltaic construction scheme. Combined with the parameters of the proposed power station, the proposal/application for photovoltaic power station project can be generated with one click, which greatly reduces the difficulty in the early stage of the project.

Generally speaking, meteorological factors have an important influence on photovoltaic power generation. In order to maximize the efficiency and output of photovoltaic power generation system, we need to fully understand and consider these meteorological factors, and take corresponding measures in system design, operation and planning. Obtaining accurate meteorological data and forecast information through the platform can optimize the performance of photovoltaic power generation system, maximize the efficiency and output of photovoltaic power generation, and maximize the utilization of energy efficiency and renewable energy.