Talking about the comparison between micro grid system and off-grid photovoltaic power generation system solar street light-litelsol
by:Litel Technology
2022-05-21
1. Common features: All have independent power supply characteristics; All need an energy storage system; All need to match the best capacity for the battery. 2. The difference is that the microgrid system is an active system and can be connected to the large power grid, while the off-grid photovoltaic power generation system is a passive system and cannot be connected to the large power grid. The photovoltaic power generation system only needs a controller and an off-grid inverter; the energy storage system in the microgrid system is a four-quadrant operation inverter, which can realize bidirectional flow of energy. The energy storage system in the off-grid photovoltaic power generation system is Single-phase converters cannot achieve bidirectional flow of energy. 3. Principles of practical application If the application is in remote places such as Gobi and beach, and does not require frequent manual maintenance, it is appropriate to use an off-grid photovoltaic power generation system. Therefore, this system does not need to be manned and can operate independently, and only requires regular maintenance. The battery will do. If the application is close to the large power grid, and requires frequent manual maintenance and strict scheduling requirements, the micro-grid system is suitable, because the switching of various distributed power sources and the scheduling of operating states in this system require manual operation. Intervention, and some even require monitoring systems.
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