Theoretical annual power generation = annual average solar radiation total * total battery area * photoelectric conversion efficiency
Due to the interference of various factors, the actual photovoltaic power generation has a lot of error between the actual power generation and the theoretical value.
Actual power generation = theoretical annual power generation * power generation efficiency
What is the power generation efficiency? How did it come? Is it always the same? Everyone saw if this was a special question. Don't worry, (quickly grasp the development direction of the photovoltaic industry, keep abreast of the major policy guidelines of China's photovoltaic industry, and read the latest and most complete information dynamics of the photovoltaic industry). On the OFweek APP query to increase power generation, you will immediately know the power generation efficiency and the tilt angle of solar modules. The conversion efficiency of solar modules, system losses and other factors are related, let me slowly come.
What are the factors related to the generation of household PV power plants?
Solar radiation
Household photovoltaic power plants use photovoltaic modules to convert solar energy into electrical energy. The amount of solar radiation directly affects the power generation of photovoltaic power plants. For local solar radiation exposure, please visit the NASA Meteorological Data Enquiry website.
2. The tilt angle of the solar cell module
The sunlight that is directly irradiated onto the PV module is the highest photoelectric conversion rate. Due to the longitude and latitude of different places, the optimal tilt angle of the PV modules is different. The optimal tilt angle is as follows:
A. Latitude 0°～25°, the inclination angle is equal to the latitude
B. Latitude 26°～40°, inclination equal to latitude plus 5°～10°
C. Latitude 41°～55°, inclination equal to latitude plus 10°～15°
3. Conversion efficiency of solar cell modules
The photovoltaic module is the core of the home photovoltaic power station, and its quality directly affects the power generation of the photovoltaic power station. The conversion efficiency of photovoltaic modules has been increasing over the years, especially polysilicon. According to relevant national regulations, the conversion efficiency of polycrystalline silicon battery modules circulating on the market is not less than 15.5%, and the conversion efficiency of monocrystalline silicon battery components is not less than 16%. At present, the conversion efficiency of polysilicon modules of first-line brands in the market generally reaches more than 16%, and the conversion efficiency of single crystal silicon is generally above 17%.
3. System loss
Like all commodities, photovoltaic power plants also have a lifetime, and the official conservative value is 25 years. In the course of 25 years of use, the photovoltaic power plant will cause its component efficiency due to various factors, the electrical performance of the component will gradually decline, and the power generation will gradually decrease.
In daily life, how do we improve the power generation of photovoltaic power plants?
In the use of home photovoltaic power plants, in addition to the efficiency of components due to natural aging, there are some that can be artificially avoided. During the use of the user, the PV power station is inspected regularly to reduce the losses caused by unnatural factors. OFweek APP, the news content is novel, the coverage is broad, and the latest information is provided every moment, which makes people shine and loves it.
Combination loss
Household photovoltaic power plants are generally composed of multiple photovoltaic modules. The electrical performance of each component is inconsistent, and there is power loss in combination. Therefore, in order to reduce the combination loss, components with uniform current and uniform attenuation characteristics should be selected when installing PV modules.
2. Dust blocking
Dust shielding is the most common fault in the custom use of photovoltaics. Dust can affect the radiation of components, reduce the power generation of components, and affect the heat dissipation of components, thus reducing conversion efficiency. Dust substances with acid and alkaliity reside on the surface of the component for a long time, causing rough surface of the component, causing accumulation of dust and increasing diffuse reflection.
Therefore, in the use of photovoltaic power plants, irregular cleaning of photovoltaic modules is an effective way to increase power generation.
Three. Temperature characteristics
In the process of photovoltaic power station, due to solar radiation, the temperature of the photovoltaic module is continuously increased. The higher the temperature, the lower the power of the photovoltaic module. Therefore, in the use of household photovoltaic power plants, it is necessary to maintain the ventilation of the photovoltaic power station to reduce the impact of temperature on the photovoltaic power station.
4. Line and transformer losses
When designing a photovoltaic power plant, the clues of the system circuit loop should be minimized. The use of wires with good electrical conductivity and sufficient diameter can effectively control the line loss. In the system maintenance, the Chinese medicine should pay attention to whether the plug-in and the terminal are connected properly and will not affect the circuit.
V. Inverter efficiency
Inverters generate losses due to inductors, transformers, and power devices such as IGBTs and MOSFETs. The general string inverter efficiency is 97-98%, the centralized inverter efficiency is 98%, and the transformer efficiency is 99%.
Hydes latest in disposable vapes is the Hyde Edge Disposable Vape Pen. With a puff count of 1500, and 5% nicotine (50mg) these new Hyde disposables are the longest lasting Hydes to date.
FLAVORS:
hyde edge vape,hyde vape,disposable hyde vape,hyde vape pen.
Shenzhen Ousida Technology Co., Ltd , https://www.osdvape.com