Will distributed photovoltaic access affect power quality? 1. What parts does a grid-connected distributed photovoltaic power generation system consist of?
A distributed photovoltaic power generation system consists of photovoltaic modules, grid-connected photovoltaic inverters, distribution boxes and energy meters with bidirectional measurement. , etc. .
2. How to obtain data on local solar energy resources?
For the design of a photovoltaic system, the first step, and a very critical step, is to analyze the solar energy resources at the where the resources are located. The project is installed and the associated weather data. Weather data such as local solar radiation, precipitation, wind speed, etc. are key data for system design. Currently, weather data from importe which location in the world can be queried for free via NASA's weather database.
3. How to choose the grid connection voltage of the distributed grid-connected photovoltaic system?
The grid connection voltage of the distributed photovoltaic system is mainly determined by the installed capacity. of the system. The specific voltage connected to the grid should be determined according to According to the access system approval of the power grid company, general households can choose AC220V to connect to the power grid, and commercial users can choose AC380V or 10kV. to connect to the electrical network.
4. What determines the installation inclination of the PV array?
The installation inclination of the PV array is generally determined by the latitude of the installation site.
5. How to determine installation orientationphotovoltaic generator? How will this impact the power generation effect?
Since the main factor affecting photovoltaic power generation is the amount of sunlight, the modules must be installed in the best direction of the sun. Sufficient installation directions, different installation angles also have an impact on the power output of photovoltaic modules.
6. How to choose a photovoltaic power plant system?
When choosing a photovoltaic power plant, you should check whether the brand is reliable and whether the product quality and service can be guaranteed. Choose professional and regular brands of photovoltaic products.
7. Should the influence of wind speed be considered when designing and installing photovoltaic panels? How should building load and wind resistance requirements bebe taken into account when installing distributed photovoltaic systems?
Installation of photovoltaic systems on the grid? roof of a building, the load on the roof of the building should be considered, and the impact of turbulence and speed changes generated by the air flow after meeting the building on the safety of the photovoltaic field should be taken into account only with full consideration. local wind conditions, relief, topography and the planned installation of the photovoltaic generator. The relative position of the building in the surrounding environment can ensure the safety of the photovoltaic array and the surrounding life and property.
8. How to determine the installed capacity of a home photovoltaic power generation system?
The installed capacity of a home photovoltaic power generation system depends on the load of the electrical equipment, the style du roof and roof area. , and combined with the approval notices of the power grid company to determine the optimal installation capacity, based on the area of the inactive roof, a 5 kilowatt photovoltaic power plant. generally covers an area of 50 square meters. However, before installation, it is necessary to measure the dimensions of the roof and design it with professional skills.
9. How to estimate the energy production of a distributed grid-connected photovoltaic system?
To estimate the energy production of a photovoltaic power generation system, you need to know the effective insolation. time, system efficiency and system installation capacity. 1 kW photovoltaic power plant on average,The daily electricity production is about 3 to 6 degrees.
10. Once the distributed photovoltaic power generation system is connected to the grid, how can it be distributedWhether the electricity currently used at home comes from the grid or from your own solar modules?
Once the installation of the distributed photovoltaic power generation system is completed, the power grid company will carry out inspection and acceptance of the connection to the network. After passing acceptance, two (or two-way) electricity meters will be installed at the owner's home. the electricity meters will independently measure the electricity production of the photovoltaic system and the electricity consumption of the city.
11. If there is continuous rain or mist after installation, will the photovoltaic power generation system still work? Will there be insufficient power or a power outage?
Will the photovoltaic plant work? also works in some low light conditions. It can produce electricity, but due to raine continuous or foggy weather, the illumination of solar radiation is weak. If the operating voltage of the photovoltaic system cannot reach the starting voltage of the inverter, the system will not do so. work. Grid-connected power generation system and power distribution The grid works in parallel when the photovoltaic system cannot meet the load demand and does not work, the grid electricity will be automatically supplemented and there is no will have no problem of electricity shortage. or a power outage.
Selecting an appropriate photovoltaic support type requires consideration of the following factors:
1 Installation environment: Different installation environments, such as the ground. , Roofs, mountains, etc. have different media requirements. For example, ground supports must take into account the bearing capacity and thefoundation topography, and roof supports must take into account the roof structure and load-bearing capacity.
2. Power Generation Demand: Select the appropriate support type based on the project's power generation demand. If you want to improve the efficiency of power generation, you can choose an adjustable angle bracket, such as a slope bracket or an adjustable angle tracking bracket.
3. Cost Budget: Different media types have different costs, including material costs, transportation costs, installation costs, etc. Choose the appropriate media type based on your project budget.
4. Technical requirements: Some special projects may have special technical requirements, such as wind resistance, earthquake resistance, corrosion resistance, etc.. Depending on the technical requirements of the project, select the media type that meets the requirements.
5. Reliability and maintenance: Consider the reliability and maintenance costs of the medium. Some types of media may require more frequent maintenance, while others may be more durable and stable.
When choosing a type of photovoltaic mount, it is best to consult a professional photovoltaic mount manufacturer or engineer to make a comprehensive evaluation and selection based on the specific project conditions and needs . They can provide professional advice and technical assistance to help you select the most appropriate type of photovoltaic mounting.
Kesheng roof photovoltaic support case