9440300990 12-1
DECS-250 Grid Code
12 • Grid Code
Grid Code settings make the DECS compatible with grid code compliant systems. Grid Code mode
settings consist of grid connectivity parameters, active power control parameters, and reactive power
control parameters. These settings are defined in the following paragraphs.
Configuration
BESTCOMSPlus Navigation Path: Settings Explorer, Grid Code Settings, Configure
HMI Navigation Path: Settings, Operating Settings, Grid Code Settings, Grid Code Configure
Grid Code compliant generating units must remain connected to the grid during grid instability for a set
amount of time within certain voltage and frequency limits. See Figure 12-1.
Figure 12-1. Generator Operation Regions
The Continuous Operation region in Figure 12-1 is defined by four settings: Max Frequency for
Continuous Operation, Min Frequency for Continuous Operation, Max Voltage for Continuous Operation,
and Min Voltage for Continuous Operation.
High and Low Frequency
The High Frequency region in Figure 12-1 is defined by two settings: Max Frequency for Disconnect and
Max Frequency for Continuous Operation. When grid frequency is within the range defined by these two
settings, the Frequency Disconnect timer is active.
The Low Frequency region in Figure 12-1 is defined by two settings: Min Frequency for Disconnect and
Min Frequency for Continuous Operation. When grid frequency is within the range defined by these two
settings, the Frequency Disconnect timer is active.
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