Does Grid-Tied Solar Work When Power is out?
Can grid-tied solar still work during a power outage?
Grid-tied solar usually cannot continue to work during a power outage. The following is a detailed analysis of this situation, which mainly includes 4 aspects:
The grid-tied solar power generation system is mainly composed of photovoltaic modules (square arrays) and photovoltaic grid-tied inverter power supply devices. The photovoltaic modules convert solar energy into DC power, and then convert the DC power into AC power with the same frequency and phase as the grid through the grid-tied inverter power supply, and feed it into the grid.
During normal power generation, the photovoltaic grid-tied power generation system is connected to the grid and transmits active power to the grid.
When the grid is out of power, the photovoltaic grid-tied power generation system will stop generating power immediately for safety reasons. This is controlled by the inverter's anti-traceability function (also known as the island effect detection and control function).
The island effect means that when the grid loses power, the photovoltaic grid-tied power generation system may continue to work and is in an independent operation state with the local load. This phenomenon will cause great safety hazards to personal safety, grid operation and the inverter itself.
The inverter plays a vital role in the grid-connected solar power generation system. It can not only convert DC power into AC power, but also has maximum power tracking control function, automatic voltage adjustment function and DC detection function.
At the same time, in order to prevent the occurrence of the island effect, the inverter is also equipped with the detection and control function of the island effect. When the grid power outage is detected, the inverter will stop working immediately to ensure the safety of the system.
Although the grid-connected solar power generation system usually stops working when the grid power outage occurs, in some special circumstances, such as the use of microgrid systems, the photovoltaic system can continue to be used when the grid power outage occurs.
However, this requires the proper design and configuration of the microgrid system and ensures compliance with relevant safety standards and regulations.
In summary, the grid-connected solar power generation system usually cannot continue to work during a power outage, which is to protect the safety of maintenance personnel and prevent the occurrence of the island effect.
