Multi-Section Line Information

See Also

 

Multi-section line records are used to group a number of series-connected transmission lines together so that their status is controlled as a single entity. They are usually used to model very long transmission lines that require multiple individual transmission line records if they are to be modeled accurately. In terms of line status, Simulator then treats each multi-section line as a single device. In other words, changing the status of one line in the record changes the status of the other lines in the record, as well.

Multi-section line records are not directly represented on the oneline diagrams. Rather, to view this dialog, right-click the record of interest on the Multi-Section Line Records display and select Show Dialog from the resulting local menu. To define a new multi-section line, switch to Edit Mode and, from the Multi-Section Line Records display, right-click and select Insert from the resulting local menu.

Note: If any of the transmission lines comprising a multi-section line record are deleted, the entire multi-section line record is deleted as well.

 

The Multi-Section Lines Dialog contains the following fields:

From Bus Number and Name

Number and name of the from bus for the record. If you are defining a new multi-section line, this must be the first data item you specify.

To Bus Number and Name

Number and name of the "to" bus for the record. You cannot specify this value directly. Instead, use the table at the bottom of the dialog to define the intermediate buses and to terminal.

Circuit

Two character identifier used to distinguish between multiple records joining the same from/to buses. The first character of the circuit identifier must be an "&."

You can use the spin button immediately to the right of the circuit field to view other multi-section line records. However if you have changed the record, you must select Save before moving to another record. Otherwise, your changes will be lost.

From End Metered

If checked, the from end of the record is the metered end; otherwise the to end is metered.

Multi-Section Line Name

The name for the multi-section line.

Table

The table lists the dummy (or intermediate) buses and the to bus that comprise the record. The first column should contain the first dummy bus number and the circuit ID of the transmission line joining the from bus with the first dummy bus. The next column should contain the second dummy bus number and the circuit id of the transmission line joining this bus to the first dummy bus. Continue until the last column contains the to bus and the circuit ID of the transmission line joining the last dummy bus with the "to" bus.

Each transmission line comprising the multi-section line must already exist. If only one transmission line joins any two buses, you may omit the circuit identifier.

OK

Saves any modifications and closes the dialog.

Save

Saves any modifications but does not close the dialog.

Cancel

Closes the dialog without saving modifications to the current record.

Delete

Deletes the current multi-section line record.

Note: If any of the transmission lines comprising a multi-section line record are deleted, the entire multi-section line record is deleted as well. One exception is if a section or sections of a multi-section line are removed by merging the section terminal buses together into a single bus. If special conditions are met, the multi-section line record will be maintained.