Bus Display Objects

 

In power system analysis, the term "bus" is used to refer to the point where a number of electrical devices, such as lines, loads or generators, join together. On the oneline diagram, buses are usually represented with either a thick horizontal line or a thick vertical line. The bus thickness and color can be customized.

Right-clicking on the bus will display its local menu. The local menu offers you the chance to view the corresponding Bus Dialog, the Quick Power Flow List, and the Bus View Display. When the application is in Edit Mode, the local menu will also allow you to add bus fields to the bus and to insert any undrawn buses connected to the selected bus. Bus Fields are often placed close to the bus to indicate its voltage magnitude, voltage angle, and other relevant information. A more complete description of

 

Edit Mode

To add a new bus to the case graphically, follow this simple procedure:

• Select Network > Bus from the Individual Insert ribbon group of the Draw ribbon tab. This prepares Simulator to insert a new bus.
• Left-click on the oneline background at the location where you want to place the new bus. This invokes the Bus Option Dialog.
• Use the Bus Option Dialog to specify the number, name, size, thickness, orientation, area, zone, and nominal voltage of the bus, as well as the load and shunt compensation connected to it. Every bus must have a unique number.
• The Bus Option Dialog will include a message just above the Bus Number field indicating that a new bus will be inserted into the power system data model. This will appear as long as the Bus Number that is selected does not already exist in the power system case.
• Click OK on the Bus Option Dialog to finish creating the bus and to close the dialog. If you do not wish to add the bus to the case, click Cancel.

If you are simply adding a symbol to the oneline diagram for a bus that has already been defined in the case, many of the parameters you are asked to specify in step three will be filled in for you.

To modify the parameters for an existing bus, position the cursor on the bus and right-click to invoke the bus' local menu. From the local menu, choose Bus Information Dialog to view the associated Bus Dialog. You may change any of the parameters specified there. When a bus' number is changed, the bus numbers associated with all of the devices attached to that bus are also automatically changed. To renumber several buses simultaneously, please see Bus Renumbering Dialog.

To modify any aspect of a bus' appearance, first select the bus, and then click any of the format buttons found in the Formatting ribbon group on the Draw ribbon tab. You can change the length of the bus (but not its thickness) by dragging the bus' resizing handles.

In order to delete an existing bus after selecting it, use either the Cut button, found in the Clipboard ribbon group on the Draw ribbon tab, to preserve a copy of the bus on the Windows clipboard, or Delete button, found in the Clipboard ribbon group on the Draw ribbon tab, to remove the bus without copying it to the clipboard. You will be asked whether you want to remove both the display object and its associated bus record, or merely the display object, leaving the bus in the power flow model. If you will never be deleting a record from the power system model, you may also choose the option labeled Always Delete Objects Only. Be careful when deleting existing buses with attached devices. An error will occur during validation if you do not also delete the attached devices or attach them to other buses.

Local Menu for Bus Display Objects

When right-clicking of a single Bus Display object in Edit mode a very large drop-down menu appears as shown in the image below. The first entry in this menu can not be clicked on and will show the Name of the Bus and then the Number of the bus enclosed in parantheses. Under this there are several options

Insert Connected Buses : has a submenu that will insert buses connected to the selected bus as well as options for Lines, Gens, Loads, and Shunts. There is also an option to setting the options related to these features. This feature will be impacted by the whether the DisplayBus has been flagged as AllowFixedNum = YES as described in AllowFixedNum property of a DisplayBus. Auto Insert / Edit Oneline : An option to use the Using the Insert Palettes, Equipment Mover, and Split Bus Tool. Choosing the option to Move by Geographical Coordinates means that the Bus will be moved on the oneline diagram to the latitude/longitude coordinates specified with the bus data object (or the substation object if the bus does not have valid latitude/longitude coordinates. Bus Information Dialog : will open the Bus Information Dialog for either Run Mode or Edit Mode. Show Data View : Will open the Data View dialog for the bus Open Model Explorer : Will open the Model Explorer and navigate to this Bus. Bus View : Will open the Bus View oneline and navigate to this bus. Bus or Substation Spatial View Oneline: Will open the Bus Spatial View Oneline Quick Power Flow List : opens the Quick Power Flow List Create Contingency : will create a new Power Flow Contingency that opens the selected bus Add New Fields Around : will bring up a dialog for Inserting and Placing Multiple Display Fields Format : has a subment to bring up the Format Dialog, Apply Default Draw Values, Copy/Paste Format as described on the Formatting Group on the Draw Ribbon Tab and Snap Bus to Grid as described in Grid/Highlight Unlinked Objects Create Case Info Display: Will open up a Case Information Display with only this bus in it Open External Maps: For a diagram configured with a Map Projection on the Oneline Display Options Geography Tab, this will automatically open either Google Maps, Bing Maps, or the Open Infrastucture Maps (openinframap.org) to the geographic location.