Contingency Options: Switched Shunt Response

 

The Switched Shunt Post-Contingency Response display can be opened from the Modeling group of the Contingency Analysis dialog Options page. This display provicccccbgtflgdes a specialized switched shunt display with specific fields used for setting the post-contingency response of individual switched shunts. These fields allow you to general change three things in the post-contingency power flow solution: control mode, Regulation Values, and Max/Min Mvar outputs. Details of these fields are as follows.

Field

Description

CTGShuntMode

Specify a value to which ShuntMode should be changed during the post contingency power flow solution. Options are the same as for ShuntMode field (Fixed, Discrete, Continuous, Bus Shunt, or SVC) but the value may also be set to Default indicating that it should not change the ShuntMode.

CTGRegUse

If this value is set to YES, then during the post contingency power flow solution the RegHigh and RegLow of the switched shunt will be changed to match CTGRegHigh and CTGRegLow.

If the existing shunt is set to use the RegTargetHigh value then the target values will be changed such that

RegTarget = CTGRegLow

RegTargetHigh = CTGRegHigh

Otherwise, the target value will be changed to the middle of the new range with a value of

RegTarget = (CTGRegLow + CTGRegHigh)/2

CTGRegLow

Use as described in CTGRegUse above

CTGRegHigh

Use as described in CTGRegUse above

CTGMvarUse

This is only used for switched shunts that are one of the following

  1. Continuous Control Mode (it could get changed to this by CTGShuntMode above)
  2. SVC Control Mode (but not if SVCType = svsmo2)

If this value is set to YES, then during the post-contingency power flow solution, fields associated with the shunt blocks and use of continuous element of the switched shunt will be modified to achieve the CTGMvarMin and CTGMvarMax values specified.

CTGMvarMin

Used as described in CTGMvarUse above

CTGMvarMax

Used as described in CTGMvarUse above