First, the definition of distributed photovoltaic
The distributed photovoltaic power generation project that utilizes the construction of the roof of a building and ancillary venues can be selected as a model of “spontaneous self-use, excess power access to the Internet†or “full-scale Internet access†when the project is filed. It advocates near-infrared power generation, close to on-grid, near conversion, and proximity to the principle of not only can effectively increase the amount of power generated by photovoltaic power plants of the same scale, but also effectively solve the problem of power loss in boosting and long-distance transportation.
The construction of non-power consumption facilities such as agricultural greenhouses on the ground, access to the power grid at a voltage level of 35 kV and below (66 kV in the northeast region), a single project capacity of not more than 20,000 kilowatts, and power generation mainly at the connection point The photovoltaic power station projects that were changed in the radio zone were included in the management of the scale of distributed photovoltaic power generation.
Second, the characteristics of distributed photovoltaic
Feature 1: Located near the user.
Feature II: 10kV and below access; fishlight complementary/agro-optic complementary is 35kV (66kV) and below access.
Feature 3: Access to the distribution network and local consumption.
Feature 4: The single-point capacity does not exceed 6 MW (multi-point access is the maximum), and the fish-to-optic/complementary single-point access capacity does not exceed 20 MW.
Third, the relationship between photovoltaic power generation system and distributed photovoltaic power generation system is as follows:
Therefore, grid-connected distributed photovoltaic systems can be roughly divided into three categories.
Current distributed photovoltaic power generation systems generally refer to grid-connected systems, not including off-grid systems. Distributed generation and grid-connected power grids can be used for self-use, extra power online, and can also be purchased and sold in a unified manner (fully sold to the grid).
Which locations are suitable for installing distributed photovoltaic power generation systems?
Commercial buildings: The effect is similar to that of industrial parks. The difference is that commercial buildings are mostly cement roofs and are more conducive to the installation of photovoltaic arrays. However, they often have requirements for architectural aesthetics, such as commercial buildings, office buildings, hotels, convention centers, and resorts. The characteristic of the service industry is that the user load characteristics are generally higher during the day and lower during the night, and can better match the photovoltaic power generation characteristics.
Agricultural facilities: There are a large number of available roofs in rural areas, including self-owned houses, vegetable sheds, fish ponds, etc. The rural areas are often in the public power grid, and the power quality is poor. The construction of distributed photovoltaic systems in rural areas can increase electricity security. And power quality.
Public buildings such as municipalities: Due to the unification of management norms, user loads and business practices are relatively reliable, installation enthusiasm is high, and public buildings such as municipalities are also suitable for the concentrated contiguous construction of distributed photovoltaics.
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