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Photovoltaic grid-connected box – knowledge expansion

Author: Site Editor     Publish Time: 2022-11-26      Origin: Site

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Photovoltaic grid-connected box – knowledge expansion

The photovoltaic grid-connected box is an electrical device used to connect the DC power supply and the AC load in the solar photovoltaic system.

According to their different uses, they are divided into the following categories:

(1) Off-grid photovoltaic grid-connected box;
(2) Network connection point;
(3) Energy storage type;
(4) Inverter type;
(5) Other special types, etc.

(1) The main components such as battery components and inverters in the off-grid photovoltaic system are installed outdoors, while the battery pack, controller and power distribution cabinet are installed indoors;
(2) The grid connection point system is a way to directly convert solar radiation energy and electric energy into electric energy for users to use;
(3) The energy storage system is a system that uses lead-acid maintenance-free batteries to store energy to maintain the operation of the power station;
(4) The inverter type system is a system that uses a reversible converter with control function to convert DC power into commercial power.

(1) It has the advantages of compact structure, small footprint and light weight.
(2) The cost of the transmission line can be reduced because there is no cable passing through the grid to which it is connected.
(3) When it is necessary to increase the capacity or replace the damaged components, simply add the corresponding battery pack.
(5) It can still work normally and reliably in harsh environments such as desert areas.
(6) Long service life, generally more than 20 years.
(7) Low investment and low operating cost.

Photovoltaic grid-connected box – knowledge expansion

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