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What is a grid-connected power generation system in photovoltaic engineering?

Time: 2022-07-12
With the increasingly serious energy depletion and environmental problems, solar photovoltaics, as a clean and environmentally friendly green energy, are the foundation of the future renewable energy

With the increasingly serious energy depletion and environmental problems, solar photovoltaics, as a clean and environmentally friendly green energy, are the foundation of the future renewable energy structure. Photovoltaic power generation systems have two modes of operation: off-grid and grid-connected. Next, what is the detailed introduction of the photovoltaic grid-connected power generation system?


First, the principle of photovoltaic intelligent tracking system: the principle of photovoltaic tracking system is actually very well understood, because the irradiation angle of the sun has been changing, the tracking technology is applied to the traditional fixed photovoltaic panel, it will not be fixed in one place, but will be like a sunflower with the change of the sun and change, so that the solar radiation energy is increased, further promote the overall power generation of the power station.


Second, what is the photovoltaic intelligent tracking system: because of the earth's autobiographical movement, compared with the fixed solar photovoltaic power generation system, the sunrise and sunset every day in the spring, summer, autumn and winter of the year, the sun's illumination angle changes all the time, only effectively ensure that the solar panels can always face the sun, can ensure that the power generation efficiency reaches the appropriate state. At present, the photovoltaic intelligent tracking system calculates the angle of the sun at different times of each day according to the latitude and longitude of the placement point, and stores the sun position at each time of the year to the PLC, microcontroller or computer software, that is, to calculate the position of the sun to achieve tracking. Computer data theory is based on the earth's latitude and longitude data and settings, after installation is not convenient to move and disassemble, after moving the original data and parameters have to be reset, the principle, technology, circuits, equipment are more complex, the operation needs to be carried out by professionals.


Third, the advantages of photovoltaic intelligent tracking system in power generation: affected by the rotation of the earth, a fixed point on the earth runs with the cycle of the sun throughout the year, resulting in continuous changes in the angle of illumination. The installation of a photovoltaic tracking system is to maintain the solar panels with the changes of the sun, increase the amount of solar radiation received by the photovoltaic array, and further increase the overall power generation of the solar photovoltaic power generation system. According to the adjustment angle of the bracket, the photovoltaic tracking system can be divided into three categories, namely flat single axis, oblique single axis and dual axis tracker. By calculation, the dual axis can increase the power generation by 40%, the oblique single axis can increase the power generation by 20%-25%, and the flat single axis can increase the power generation by 10%-20%. Among them, the risk of flat single-axis reliability is relatively low, while the risk of oblique single-axis and dual-axis is higher. From the comprehensive cost performance of the three products of flat single axis, oblique single axis and dual axis tracking system, flat single axis has more advantages.


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What is a grid-connected power generation system in photovoltaic engineering?
With the increasingly serious energy depletion and environmental problems, solar photovoltaics, as a clean and environmentally friendly green energy, are the foundation of the future renewable energy
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