What is a microgrid?
A small power generation and distribution system
Mar 17,2025

Definition and Composition of Micro-Grid Micro-Grid (Micro-Grid) is a small-scale power generation and distribution system, which consists of distributed power sources (e.g. photovoltaic, wind power, gas turbines, etc.), energy storage devices, loads, monitoring and protection devices, etc. It is an autonomous power system that can realize self-control, protection and management. It is an autonomous power system capable of realizing self-control, protection and management, with complete functions of power generation, distribution and consumption.
Operating modes of microgrids
Microgrids have two main modes of operation:
Grid-connected operation: microgrids are interconnected with the larger grid and work together to supply power to local loads or transmit excess power to the larger grid when there is a surplus of power supply.
Off-grid operation: the microgrid operates independently, forming an island mode to supply power to local loads. This mode is particularly important in the event of an external grid failure to ensure an uninterrupted supply of power to critical users.
Characteristics and advantages of microgrids
Microgrids have the following distinctive features:
Flexibility: able to quickly adjust and optimize configuration according to demand.
High efficiency: making full use of renewable energy and improving the efficiency of energy utilization.
Independence: Separate operation from the main grid when necessary to ensure the stability of power supply.
Application Scenarios for Microgrids
Microgrids are widely used in the following scenarios:
Industrial and commercial areas: to provide reliable power support and reduce dependence on external power grids.
Urban areas: As an important part of the smart grid, it improves the reliability and efficiency of power supply.
Remote areas: Stand-alone microgrids are suitable for areas with weak power infrastructure.
Background on the development of microgrids
The proposal of microgrid aims to respond to the challenges brought about by the “dual-carbon” policy, and to solve the problem of connecting a large number of distributed power sources in various forms to the grid through the flexible and efficient application of distributed power sources. Its development and extension can help promote the large-scale access of distributed power and renewable energy, realize the highly reliable supply of various forms of energy to the load, and promote the smooth transition of the traditional power grid to a new type of power system.
In summary, as a new type of power system, microgrid plays an important role in energy transition and smart grid construction, and has a wide range of application prospects and significant technical advantages.