① Application of offshore island microgrids
In the microgrid system, various energy sources operate in coordination in different seasons and at different times, and multi-energy complementarity has become the best configuration for offshore island power systems. In summer, you can enjoy a longer period of sunshine, and with less rain in summer, the utilization rate of the photovoltaic system has also increased. However, due to the influence of weather, the output of wind power and hydropower in summer is not ideal. In winter, when the rainfall on the island increases, small hydroelectric generators can also become the main source of electricity. The control system of the microgrid can monitor the operation of power generation facilities, optimize the battery charge and discharge cycle, and automatically start the diesel generator when there is a power shortage.
Microgrids will greatly improve the quality of power consumption. Off-grid island microgrids can meet the power needs of modern life.
② Application of microgrids in remote areas
In addition to improving the existing power supply system, off-grid microgrids are also an important part of achieving power popularization in areas without electricity. Distributed energy systems with photovoltaics as the main source and diesel generators as backup can solve the power consumption problems in these remote areas. Unlike ordinary AC electricity, household microgrid systems operate with DC power, avoiding energy losses caused by AC/DC conversion between photovoltaics, batteries and home appliances. The cost of the entire system is lower than that of setting up a power grid, and the power supply is more reliable. Distributed photovoltaics, energy storage batteries and existing diesel generators constitute a microgrid system.
Microgrids can provide users with reliable electricity while reducing electricity costs. When diesel prices rise, the substitution of photovoltaics makes the system more economical.
③ Application in urban community microgrids
If off-grid microgrids are a must for achieving electricity popularization in islands and remote areas, then developing microgrid systems in cities covered by reliable power grids will play a icing on the cake. Grid-connected microgrids can switch freely between networking and independent operation. When the large power grid fails, the microgrid can choose to disconnect from the large power grid to ensure the energy supply security of users in the area; when choosing to run on the grid, the microgrid can also obtain additional economic benefits by selling excess electricity and demand response, which fully reflects the stability of the microgrid system.
