Photovoltaic power generation is now a very common new energy source. It is mainly divided into centralized photovoltaic power generation and distributed photovoltaic power generation. Centralized photovoltaics are built in areas such as deserts and Gobi, making full use of abandoned land resources. Distributed photovoltaics are generally built on rooftops, roofs, factory roofs and vegetable greenhouses, making full use of space. So what is the difference between centralized photovoltaic systems and distributed photovoltaic systems?
Similarities
1. The principle is the same. Both use solar energy to convert into electrical energy, and then connect the generated electricity to the grid for production and life.
2. The components are the same. Generally, monocrystalline silicon panels or solar films are used.
3. The primary equipment used is basically the same, including inverters, transformers, junction boxes and other equipment. The function of the inverter is to convert the generated DC into AC; the function of the transformer is to boost the AC converted by the inverter; the function of the junction box is to collect the DC of the solar panels together and transmit them to the inverter.
Differences
1. Different installation locations:
Distributed photovoltaics are mainly installed on the roofs of agricultural greenhouses, while centralized photovoltaics are mainly installed in Gobi and deserts. Generally, the areas where they are installed are remote and desolate, and the land is relatively cheap.
2. Different grid-connected voltage levels:
3. Different secondary equipment used in power stations:
4. Different transmission distances: Distributed photovoltaics generally connect the generated electricity to the grid on site, and the line loss is very low or even zero. It supplements the local electricity for use by local and nearby electricity users. The electricity generated by centralized photovoltaic power stations is connected to the grid via high voltage, and the electricity is transmitted layer by layer to a higher voltage level.
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