Contingency Element Type: Area

See Also

 

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

 

Action Settings

Set To

Make-up power is important to compensate for any real power (MW) changes during a contingency. Based on system conditions, the make-up power for an area might need to be different during a contingency than the area control settings used in the base case. This is the main use of the area contingency action.

When the Area type is selected, the contingency element dialog will be modified to allow input of options specific to this element type. The only option available with this action is to set the Area Control Type. Available control types are Off AGC, Part. AGC, Area Slack, and IG Slack. The Area Control topic provides more information about these control types. If selecting Area Slack, the Area Control Object must be set to select the bus that will act as the area slack during the contingency action. If selecting IG Slack, the Area Control Object must be set to select the injection group that will act as the area slack during the contingency action.

In order for the Area contingency action to work correctly, there are contingency and power flow solution options that must be set correctly. Simulator does not automatically set these options so the user must make sure they are set.

• Area control must be enabled in the contingency base case, i.e. the Power Flow Solution Option for Island-Based AGC must be set to Disable (Use the Area and Super Area Dispatch settings).
• The contingency Make-Up Power option must be set to Same as Power Flow case.
• The option to Disable Automatic Generation Control (AGC) found with the Power Flow Solution Options must NOT be selected.

Another suggestion, although not a strict requirement, is that the area should be on area control prior to contingency analysis if a control type other than Off AGC is going to be set during a contingency. If a large ACE exists in the base case with area control off, switching the area on control during the contingency will zero out the ACE in addition to compensating for required make-up power.