Contingency Element Type: DC Converter

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The following describes the options available when creating a contingency element of type DC Converter. Contingency elements are created from the Contingency Element Dialog, and additional details of how to create contingency elements can be found here.

 

Action Settings

Open

The Open action will set the Status of the selected dc converter to Open. If the dc converter is already open, this action does nothing.

Close

The Close action will set the Status of the dc converter to Closed. When selecting the Close action, the Amount must be specified for the new Setpoint of the dc converter in either MW or Amps. If specifying the Setpoint in MW, the Set Mode of the converter will be set to Power. If specifying the Setpoint in Amps, the Set Mode of the converter will be set to Current.

Set To

The Set To action will set the selected dc converter’s Setpoint to a specified Amount and could possibly change the Set Mode of the converter. If the Set Mode of the converter is presently Voltage, no changes are made. The Setpoint can be set in Percent, MW, or Amps. When the Setpoint is set in Percent, the Setpoint is set to the specified percentage of the contingency reference state Setpoint of the converter and the Set Mode remains unchanged. When the Setpoint is set in MW, the Setpoint is set to the specified MW amount, and the Set Mode is changed to Power if the Set Mode is presently Current. When the Setpoint is set in Amps, the Setpoint is set to the specified current amount, and the Set Mode is set to Current if the Set Mode is presently Power.

Change By

The Change By action will change the selected dc converter's Setpoint by the specified Amount and could possibly change the Set Mode of the converter. If the Set Mode of the converter is presently Voltage, no changes are made. The Setpoint can be changed in Percent, MW, or Amps. When the dc converter’s Setpoint is changed in Percent, the Setpoint is changed by the specified percentage of the contingency reference state Setpoint of the line and the Set Mode remains unchanged. When the Setpoint is changed in MW, the Setpoint is changed by the specified MW amount, and the Set Mode is changed to Power if the Control Mode is presently Current. When the Setpoint is changed in Amps, the Setpoint is changed by the specified current amount, and the Set Mode is set to Current if the Control Mode is presently Power.

When the Set Mode changes from either Power to Current or from Current to Power, the appropriate conversions are done so that the resulting Setpoint value reflects the original Setpoint and the change in Setpoint in the same units. The Mode of the multi-terminal dc line to which the converter belongs as well as all other non-voltage controlling converters will be set to the same Set Mode.