Adopt a large number of modern power technologies, such as gas turbines, wind power generation,
Photovoltaic power generation, fuel cells, energy storage equipment and together, directly.
Then at the client. For large power systems, microgrid can be regarded as a kind of
In a controlled unit, it can all act in a few seconds.
External power supply network requirements [12]; For users, microgrid
Can meet their specific needs, such as improving local reliability, reducing
Low feeder loss, maintaining local voltage stability by using waste heat.
Energy efficiency is high, and uninterrupted power supply can be provided. Microgrid and
The large power grid exchanges energy through PCC, and the two sides are standby for each other.
Improve the reliability of power supply. Figure 1 shows photovoltaic power generation, wind power
Energy, fuel cells, micro gas turbines and micro power forms, among which
Some joints are located near the heat load to provide heat for local users.
Source, so as to improve the utilization rate of energy.
Microgrid solves the problem of DERs network, and because
Adopting advanced power electronics technology is flexible and controllable, making micro
DERs can be effectively used to calculate micro-power flow in power grid.
Supervision. As a beneficial supplement to a single large power grid, microgrid has a wide range.
This application has great potential. At present, some major developed countries in the world
The United States, the European Union, Japan, Canada and other countries and regions will open up.
Research progress of microgrid.