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Distributed photovoltaic power generation is a technology that directly converts light energy into electrical energy by using the photovoltaic effect of the semiconductor interface. It is mainly composed of solar panels (components), solar charge controllers and solar inverters. After the solar cells are connected in series, they can be packaged and protected to form a large-area solar cell module, and then combined with power controllers and other components to form a photovoltaic power generation device.
The application scenarios of this solution can be urban high-rise, multi-storey residences, townhouses, single-family villas, rural residences, etc. Generally 1-10kW, can be installed on residential roofs, balconies, walls, ground, and can cooperate with developers to realize BIPV photovoltaic building-integration. The power generation can be all connected to the Internet, all self-use or self-generated and self-used surplus electricity. The system has a lifespan of 25 years.
Under the condition of solar radiation, the solar cell module array of the photovoltaic power generation system converts the output electric energy from the solar energy, and sends it to the DC power distribution cabinet through the DC combiner box, and the grid-connected inverter converts it into AC power to supply the building itself. Excess or insufficient power is regulated by connecting to the grid.
The centralized photovoltaic power station mainly uses large-scale solar cell arrays to directly convert solar energy into direct current. Through the lightning protection combiner box and the DC power distribution cabinet, the multi-channel DC is merged into the photovoltaic inverter, and the photovoltaic inverter converts the multi-channel direct current. It is then connected to the power grid through the AC power distribution cabinet, step-up transformer and high-voltage switchgear to transmit photovoltaic power to the power grid, and the power grid will be deployed to supply power to users.
The centralized photovoltaic power station mainly consists of four parts:
Photovoltaic power stations in industrial and commercial buildings are mainly located in urban industrial parks or enterprises, commerce, office buildings, logistics parks and other places with large roofs. The power generated by the distributed photovoltaic power generation system will be consumed locally to the greatest extent, and only a small proportion of excess power will be transmitted to the grid.
The grid-tie photovoltaic power generation system of industrial and commercial buildings mainly includes solar panels, DC combiner boxes, AC combiner boxes, on gird inverters and AC grid-tie cabinets. It is necessary to install relevant power quality detectors according to the local electricity bureau.
|Solar panels||Solar charge controllers||On Grid Inverters|
Use the light-facing side of the building to absorb solar radiation and directly convert it into electricity. It can not only reduce conventional energy consumption and protect the environment, but also cooperate with battery charging to meet local living and production energy requirements.