Bus Diagram 

Bus Diagram Toolbar

• Case: This dropdown contains all Network Case IDs from the Nodal Input window.  Select a loadflow for viewing.
• Source: This dropdown contains options for Input data (useful prior to running a study), Memory data (hourly data during a study), or Output data (must have NodalBusHour table output).

When Source = Output,  the following additional options are available:

• Run ID:  This dropdown contains the Run_IDs present in the Output.
• Report Period:  This dropdown contains the available Output periods.
• Condition: This dropdown contains the available Conditions from the output.
• Time Period: This dropdown contains the Time_Period as shown in the relevant Output table.

Toolbar

Use these setting to select a bus for viewing. Type a valid bus number in the Bus field and hit Enter. As you click-thru buses, the Last Bus field will show the bus number for the last bus. Use the refresh arrow on the right to return to the Last Bus.

Bus Information

This part of the diagram shows the Bus_Descriptor, including bus number, bus name, and kV rating for the bus. It also shows the assigned Loadflow Area. The bus is outlined in a color that corresponds to the bus kV.

This Marginal Cost appears just above the bus on the left when viewing Memory or Output data.

Generators

Generators are located on top of the bus and show:

• The Generator ID

• MW at the gen

• PMax when viewing Input

• Capability when viewing Memory or Output data

• Marginal Cost at the gen in $/WMh when viewing Memory or Output data

• MW injection below the circle along the arrow

• PGenInitial when viewing Input

• Generation when viewing Memory or Output data

Demand

Demand is located at the far right of the bus and shows:

• The net withdrawal along the arrow

• MW demand on the bus

• Total withdrawl when viewing Memory data

• Demand and Losses when viewing Output data

Flow

The arrows below the bus show the flows on the branch. The arrows point in the direction of the flow and the value to the right of the arrow is MW.  Values to the left of the arrow are input limits in MW.  

The arrow is colored to correspond to the bus kV.  Colors are determined as follows

601+kV            Maroon

401-600kV     Red

301-400kV     Purple

201-300kV     Orange

121-200kV     DarkBlue

81-120kV        LightBlue

41-80kV           ForestGreen

All others         Black

Connecting Bus Information

The text below the arrows gives all the information about the connecting bus, including bus number, bus name, kV rating, circuit ID, shows whether the connection is a branch (Br), transformer (TX), or DC line (DC) and the LFArea number and name. Connecting transmission stations may also be represented as connected with gray transfer lines.

Double-click on the text to move to that bus.

These symbols may be located at the connecting buses.  They are interpreted as:

• D - demand on the next bus

• G - generation on the next bus

• GD - both generation and demand on the next bus