GE DMC490 Software Configuration Manual page 21

•
Isochronous
Operation •
Mode4
•
•
For example, assume in a particular microgrid, one big hydro
generator (such as a run-of-the-rive hydro unit with a
reservoir) can operate in isochronous mode.
This corresponds to Operation Mode 2; however, any of the
four operation modes can be assigned to a single hydro unit
in isochronous. If the operator follows the suggested
operation-mode assignment (that is, Operation Mode 2 is
hydro in isochronous) and Hydro 1 is supposed to be the
isochronous machine, the following are set for this machine:
•
•
•
•
In this manner, if you select the second mode to be the active
mode for the microgrid, then Hydro 1 can run in isochronous
mode by receiving the isochronous command from the
DMC490 MGC.
For the other microgrid operation modes, Hydro 1 is in non-
isochronous mode (as set by zero values).
Status Points
The following field mappings apply to the status/control and read-only inputs that are to be mapped to the
Microgrid controller > Renewable Asset configuration page:
•
Online: This field indicates if the renewable resource is online or offline.
• Isoc Mode: This field indicates if the resource is in droop or isochronous mode.
• Net Meter Power: This field indicates the power generation values (in kW) read from different
renewable generators in the system.
•
Operation mode: This is an Analog output which refers to the current microgrid operation mode of the
asset (as explained in section System Settings on page 19, see the Active Mode setting).
• Watchdog: This is a Digital Output command used to inform the asset that the MGC controller is
active. A Digital Output command is sent on this point with the value toggling between 0 and 1 every
10 seconds.
Dispatchable Asset
Configure each dispatchable resource with settings such as operating capacity, operating cost, and minimum
operating period of an auto startup diesel generator.
Point Settings
Setting Description
Asset ID Unique asset ID assigned by the DMC490 MGC.
Name Specify the name of the asset.
Dispatchable/CHP isochronous load sharing
Hydro in isochronous
Single dispatchable/CHP in isochronous
Grid in isochronous
Operation Mode 1 = Droop
Operation Mode 2 = Isoch
Operation Mode 3 = Droop
Operation Mode 4 = Droop
DMC490 Configuration
Range Default
4 to 20 Dispatch
characters able
Asset_
21