As human energy demands continue to increase, the world’s energy resources are depleting. Developing and utilizing renewable energy and various green energy sources is a necessary step for humanity to ensure sustained social development. Solar energy has become a focal point in the field of new energy utilization in recent years and is an ideal green energy source that aligns with sustainable development strategies.
The household solar photovoltaic generation system also utilizes solar energy. Since the photovoltaic station’s solar cell arrays are all located outdoors, it is crucial to ensure that the system operates reliably and safely, especially addressing the lightning protection issues for solar energy photovoltaic grid-connected generation systems.
Currently, people cannot effectively utilize lightning; they can only take preventive measures to mitigate various disasters caused by lightning. Most buildings in our country employ lightning protection measures such as lightning belts, lightning rods, and valve-type lightning protectors. In solar energy photovoltaic grid-connected generation systems, the principle of lightning protection is to transform a passive lightning strike into an active one. Various lightning rods essentially act as “lightning attractors,” channeling high-altitude lightning currents safely into the ground to release charges. However, this passive approach still leaves the protected solar energy photovoltaic grid-connected generation system vulnerable.
For the lightning monitoring system of solar energy photovoltaic grid-connected generation systems, the main goal is to prevent direct strikes, lightning induction, and lightning wave intrusion. Therefore, appropriate lightning protection measures and protective schemes can be taken against different lightning hazard types. Protection against direct strikes includes safeguarding the solar cell arrays and the photovoltaic station area. To effectively protect outdoor photovoltaic station solar cell arrays, correctly calculating the expected number of lightning strikes per year and determining the necessary coverage using a rolling ball method is essential. This aids in selecting the appropriate lightning rod models and performance indicators.
By applying lightning monitoring technology to solar energy photovoltaic grid-connected generation systems, the direct lightning protection of outdoor solar cell arrays and the indirect lightning protection of indoor controllers and inverters can effectively serve the people.
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