Switched Shunt Information (Edit Mode)
See Also
This dialog can be accessed by right-clicking on a switched shunt display object and choosing Switched Shunt Information Dialog or right-clicking on a switched shunt record in the Switched Shunt Display and choosing Show Dialog.
The Edit mode version of this dialog is very similar in content to its Run mode counterpart.
Bus Number
Unique number between 1 and 2,147,483,647 (equals 2^31 minus 1) used to identify the bus to which the switched shunt is attached. You can use the spin button immediately to the right of the number to move to the next switched shunt (click the up arrow) or the previous switched shunt (click the down arrow).
Find By Number
To find a switched shunt by its bus number, enter the number into the Bus Number field. Then click this button.
Bus Name
Unique alphabetic identifier for the bus to which the switched shunt is attached, consisting of up to eight characters.
Find By Name
To find a switched shunt by its bus name, enter the bus name into the Bus Name field (case insensitive). Then click this button.
Shunt ID
Since multiple switched shunts are allowed on a single bus, each switched shunt has a unique Shunt ID.
Find…
If you do not know the exact switched shunt bus number or name you are looking for, you can click this button to open the advanced search engine.
Status
Open or closed status of the switched shunt.
Status Branch Added in Version 20
Line shunts can be modeled as controllable switched shunts by linking their status to the status of a branch. The Status Branch field specifies a branch whose status will affect the status of a switched shunt. If specified, a switched shunt can only be closed if is has a status of closed and its Status Branch also has a status of closed. If the Status Branch has a status of open, the switched shunt will also have a status of open.
Click the Choose Branch button to open a dialog that allows selection of this branch. Click the Remove button to no longer associate this switched shunt with a branch.
Labels
Clicking on this button will open the Label Manager Dialog listing all the labels assigned to the selected switched shunt.
Area Number, Area Name
The area number and name to which the switched shunt belongs. Note that you can change the area of the switched shunt to be different than the area of the terminal bus. If you do so, you will be prompted to confirm that you wish to place the switched shunt within a different area than that of the bus to which it is electrically connected.
Zone Number, Zone Name
The zone number and name to which the switched shunt belongs. Note that you can change the zone of the switched shunt to be different than the zone of the terminal bus. If you do so, you will be prompted to confirm that you wish to place the switched shunt within a different zone than that of the bus to which it is electrically connected.
Substation Number, Substation Name
The name and number of the substation to which the switched shunt belongs. This is the same as that of the terminal bus.
Display
Display Size
Size of the switched shunt.
Display Width
Width of the switched shunt symbol.
Scale Width with Size
Automatically scales the width of the symbol when the object is resized.
Pixel Thickness
Thickness of the display object in pixels.
Orientation
Specifies the direction in which to draw the object.
Anchored
If checked, the object is anchored to its terminal bus. See Anchored Objects for details.
Link to New Shunt
Adds a new record in the data or links the selected shunt display object to a different record.
OK, Save, Delete, and Cancel
OK saves your changes and closes the dialog. Save saves your changes but does not close the dialog; this allows you to use, for example, the Find By Number command to edit additional switched shunts. Delete deletes the current switched shunt; this option is not available when inserting objects graphically or opening the dialog by selecting a display shunt object– use the cut command instead. Cancel closes the dialog but does not save any changes.
Parameters
Nominal Mvar
The Nominal Mvar field gives the amount of reactive power the device would supply (in Mvars) if its terminal voltage were 1.0 per unit.
Nominal MW
This field is only visible when a switched shunt already has a non-zero MW value assigned. This could occur when the switched shunt has been read from an external file as a Bus Shunt with associated MW. The MW value can also be assigned through the case information display for a switched shunt. The MW component of a switched shunt has no controllability.
Control Mode
Information about this option can be found in the Switched Shunt Control topic.
Control Regulation Settings
Information about these options can be found in the Switched Shunt Control topic.
Switched Shunt Blocks
Information about these settings can be found in the Switched Shunt Control topic.
Voltage Control Groups Added in Version 19
Specify if the switched shunt belongs to a voltage control groups. For more information on how voltage control groups work see the Switched Shunt Control topic.
Control Parameters: Advanced Options
Information about these options can be found in the Switched Shunt Control topic.
Control Parameters: Time Step Options
The Time Step Options tab contains control options specific for the Time Step Simulation tool.
Control Parameters: SVC Control Options
The SVC Control Options tab contains control options parameters specific for the SVC Shunt Control.
Control Parameters: SVC Fixed Shunt Options
The SVC Fixed Shunt Options tab contains information of the SVC controlling the shunt (SVC Shunt Control).
Fault Parameters
Typically switched shunts are treated as open circuits in the zero sequence data for fault analysis. However, it is possible to define zero sequence admittance blocks to be used. The blocks work similarly to the load flow Switched Shunt Blocks discussed above. Usually there will be the same number of blocks in the zero sequence data as in the load flow data. Simulator will determine how many blocks were switched in for the power flow solution, and then use the zero sequence block data to calculate the zero sequence admittance for the same number of blocks.
Custom
This page of the dialog contains three sections: Data Maintainer, Custom Fields, and Memo.
A Data Maintainer may be specified for the switched shunt by clicking on the Specify button. Click the Remove button to unassign a data maintainer.
The custom fields section allows access to setting and changing the values for custom fields that have been defined for the switched shunt. Defining custom fields is detailed in Custom Field Descriptions.
The Memo section of the dialog is simply a location to log information about the switched shunt. Any information entered in the memo box will be stored with the case when the case is saved to a PWB file.
Stability
This tab contains information that is used with the Transient Stability Add-On tool. Any switched shunt-specific transient stability modeling information is contained on this tab. For more information see the Transient Stability Data: Object Dialogs.