Oneline Options

Concept Link IconSee Also

 

These options are available on the Oneline tab of the PowerWorld Simulator Options dialog. It is important to note that the options on this dialog apply to all oneline diagrams. There are also a large number of options which apply only to an individual oneline diagram. The diagram-specific options are specified on the Oneline Display Options Dialog.

There are two sub-categories on the Oneline Options tab: Visualization and File.

 

Visualization

Visualizing out-of-service elements

These three options allow you to choose how objects on the diagram should appear when they are representing a power system device that is currently "open" or "out-of-service." The three options are Blink, Use dashed lines, and Draw and X through off-line generators. The first two options apply to any oneline object, while the third option is specific to generator objects only.

Set gen MW to min when closed from oneline

This option allows the generator MW value to be set to its minimum MW output after a circuit breaker is clicked in the oneline display. Normally the generator's status is set to closed and the MW value is reset to its previous value.

Show Oneline Hints

If checked, pop-up hints will appear when you drag the mouse over an object in the oneline. These give information about the object; for example, for a generator the pop-up hint displays the bus number, generator ID, the MW output and the MVAR output. You may also customize the pop-up hints for each kind of display object by choosing Options > Custom Hint Values from the menu.

Show X,Y Coordinates

If checked, the (x,y) location of the cursor is monitored in the status bar at the bottom of the screen. The (x,y) location of the cursor is only shown in Edit Mode. By default, this option is selected.

Save Contour Image with Oneline File

If checked, and if a contour is being displayed on the oneline diagram, Simulator will store the contour with the oneline diagram when you save the case or save the oneline. It will store the contour as a bitmap.

Display Unlinked Elements in Run Mode

Typically, unlinked graphical objects are not visible in Run Mode. Checking this option will allow the display of unlinked elements during Run Mode.

Enable Mouse Wheel Zooming

This option allow the use of the mouse wheel to zoom in and out in the currently selected oneline diagram.

Maximum number of open onelines

Option to specify the maximum number of onelines that can be open simultaneously (this option defaults to 10). If this maximum threshold is exceeded than PowerWorld will automatically close the oneline whose most recent access is the oldest. By default a oneline can be closed in this manner, but an additional oneline-specific option has been added that can be changed to prevent this closure. This feature is useful for users who make extensive use of oneline links or substation display object links which can make opening dozens of onelines very easy. Opening dozens of onelines can slow down the program substantially. If you have a main oneline from which other onelines are automatically opened, then you may want to prevent the main oneline from closing.

Minimum Screen Font Size

The minimum font size at which text is visible on the screen. When text is rendered to the screen, any text which is smaller than this font size will not be rendered. This is useful when zooming out on a oneline diagram where a lot of text might become cluttered or hard to read on the screen.

Minimum Print/Copy Font Size

The minimum font size at which text can be printed or copied. This is useful if the application or printer you are sending to can or cannot display smaller fonts. When text is printed, any text which is smaller than this font size will not be printed. Normally the Minimum Print/Copy Font Size is smaller than the Minimum Screen Font Size because the resolution of the printed document is much higher than the screen resolution.

Transformer Symbol

Since transformer representation varies in different countries, this option allows the user to represent transformers as coils or circles. By default, transformers are represented as coils.

Line Navigation Arrows

These settings control whether the Pixel Size of the arrows, how long in seconds it should take to pan to the line end locations, and whether to show navigation hints as your mouse hovers over the arrow. See Oneline Zoom and Panning for more information.

 

File

Automatic Loading of Display Auxiliary File

This option is used options to automatically load a Display Auxiliary File (AXD) with one specific oneline. This setting is stored in the case (PWB) so that it only applies to onelines opened with the specific case.The file full path location has to be specified in the Display Auxiliary File box.

Automatic Loading of Display Auxiliary File with ANY oneline (Only saved to the Registry)

This option is used options to automatically load a Display Auxiliary File (AXD) with each oneline that is opened. This setting is stored in the windows registry so this applies to all onelines opened on the computer. The file full path location has to be specified in the Display Auxiliary File box.

Main Oneline File

This option is used to identify the primary oneline diagram to use with the case. The main oneline is the file that is displayed when you first open the case. The dropdown box lists all the oneline files that reside in the same directory as the case. Select one of these files, or enter the full path of the oneline you want to use if it does not appear in the dropdown box.

Use Default Oneline File

You can command Simulator to open a particular oneline diagram file if it cannot find a oneline diagram file for the case you are trying to open. For example, there is no oneline diagram associated with a PSS/E raw data file when you first read it into Simulator. However, if your application is such that you will always use the same oneline file whenever you open a PSS/E raw file, check the Use Default Oneline File to have Simulator open the oneline identified in the Default Oneline File box whenever it encounters a case that has no associated oneline. The default oneline must exist in the same directory as the case you are trying to open.

Automatically Show Full when opening any oneline

This option is used to show the oneline diagram completely when opening any oneline. If the oneline was previously saved in a particular location in the diagram, if at the moment of opening a oneline this option is selected then the oneline will open showing the full oneline.

Edit Oneline Browsing Path

This option applies when you have Oneline Links included on a oneline diagram. Rather than specify the full path and name of a oneline diagram as a oneline link, you can specify the file name only. When the link is clicked in Run Mode, Simulator will check all directories listed here, in order, to try and find the oneline file name stored with the link. This browsing path is also used when looking up Shapefile Database Rcords and when finding the substation layout, URL, or command specified on the Substation Information Dialog.

Save Onelines when Saving Case

By default, Simulator always saves any oneline diagrams that are open when the user chooses to save the case (pwb) file. This option allows you to choose to be prompted to save oneline diagrams when a case file is saved, or to never save onelines when the case file is saved.

Open Oneline Links By

Open Oneline Links specifying if oneline links are to be opened by Number, Name_kV, or Label.