How does solar power generation system entry roof operate

The design life of the solar power generation system is more than 20 years, its failure rate is low, and it can run automatically after installation and commissioning. The general principle of stopping the photovoltaic power generation system is to disconnect the AC and then the DC. The specific operations are as follows:

       1) Disconnect the grid-connected circuit breaker in the grid-connected cabinet;

       2) Disconnect the DC side switch of the inverter;

       3) Disconnect the DC circuit breaker in the DC combiner box;

       Operation and use of solar power generation system entry roof:

       1) After making sure that each DC voltage in the DC combiner box is correct, close the DC circuit breaker in the combiner box (if there is a DC combiner box). Take Jiaotong University Blue Sky 240W polysilicon solar panel as an example. The open-circuit voltage of each solar panel is 36.6V. If 10 modules are connected in series, the open-circuit voltage of each circuit should be about 350V.

       2) Close the grid-connected circuit breaker in the grid-connected cabinet;

       3) Close the DC side switch of the inverter;

       4) Then the inverter self-check starts, and the system starts to generate electricity.

       In order to avoid the risk of arcing and electric shock, do not disconnect the electrical connection when working with a load. The plugs must be kept dry and clean to ensure that they are in good working condition. Do not insert other metal objects into the plug, or make electrical connections in any other way. Unless the electrical connection of the module is disconnected and you are wearing personal protective equipment, do not touch or operate the photovoltaic module with broken glass, peeling off the frame, and a damaged backplane. Do not touch wet photovoltaic modules.