Microgrid Overview - GE DMC490 Software Configuration Manual

Microgrid Overview

The Microgrid Controller controls microgrid generation and storage assets to optimize operation for the lowest
cost based on load and renewable forecasts.
A microgrid is a distribution network that operates with local (distributed) generation or islanded (grid
connection open). Both types can include renewable sources, such as wind, photovoltaics, and hydro. Because
the output from renewable sources can be intermittent and variable, and energy from these resources is not
always available when needed, renewable sources can be better utilized when there is storage in the
microgrid, such as an electrolyzer/fuel cell system or conventional battery storage.
Figure 2 shows a typical Microgrid where DG represents a Diesel Generator.
Figure 2 Typical microgrid
Islanded Power System Operation
Within any power system, the generated power must match the demand. The loading in the system is variable.
Consider the single-generator power system shown in Figure 3.
Figure 3 Single-generator power system
P and P result from multiplying the torque with the angular velocity (speed).
e m
Where:
P
e
P
m
The basic torque balance equation for the generator is:
is the electrical power
is the mechanical power
DMC490 Overview
Eq. 1
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