Simulator 16 User Guide - PowerWorld

Contingency Limit Low PU Volt: Bus' individual low voltage limit used during a
contingency when the bus is set to use specific voltage limits other than the default voltage
limit defined in the bus' limit group. This field is not enabled unless the "Use Specific Limits"
option for the bus is set to YES. The value will then reflect the contingency low per unit
voltage limit specified in one of the eight contingency low voltage limit sets that can be
defined with the bus. Which contingency voltage limit set's value is displayed depends on
which limit set is specified as the "Bus CTG Low Rate Set" in the limit group to which the bus
is assigned.
Contingency Limit High PU Volt: Bus' individual high voltage limit used during a
contingency when the bus is set to use specific voltage limits other than the default voltage
limit defined in the bus' limit group. This field is not enabled unless the "Use Specific Limits"
option for the bus is set to YES. The value will then reflect the contingency high per unit
voltage limit specified in one of the eight contingency high voltage limit sets that can be
defined with the bus. Which contingency voltage limit set's value is displayed depends on
which limit set is specified as the "Bus CTG High Rate Set" in the limit group to which the bus
is assigned.
Note: If Elements to Show is set to Monitored Elements, then only elements which meet the
conditions for monitoring will be displayed in these lists.
If using the Integrated Topology Processing add-on, an Only show the primary bus for each
superbus checkbox will be available. Checking this box will limit the buses shown to only those that
are primary buses. This provides a quick means of removing the clutter of redundant data. The
primary buses and superbuses are determined from the base case topology.
Lines Tab
Each tab shows a list of the respective type of power system element. The important columns
include
From Bus Number and Name:Bus number at name at the from terminal of the line. For
transformers, the from bus is the tapped side. Right- clicking on either of these fields allows
you to see all the flows measured at the "from" bus using the Quick Power Flow List or Bus
View Display local menu options.
To Bus Number and Name:Bus number at name at the to terminal of the line. For
transformers, the to bus is the untapped side. Right-clicking on either of these fields allows
you to see all the flows into the "to" bus using the Quick Power Flow List or Bus View Display
local menu options.
Circuit:Two-character identifier used to distinguish between multiple lines joining the same
two buses.
Monitor: toggle this between YES and NO to set whether the specific element should be
monitored.
Limit Group: toggle this value to specify which Limit Groups the element belongs to
Used Limiting Flow, Limit, Used % of Limit:The flow at the end of the branch selected
for measurement, and its MVA or Amp limit. The percentage equivalent of the flow to it’s limit
is given in the Used % of Limit column.
MVA or Amps?: Units used with the Max Flow and the Limit field. All flows are expressed
either in MVA or amps.
Note: If Elements to Show is set to Monitored Elements, then only elements which meet the
conditions for monitoring will be displayed in these lists.
Interfaces and Nomograms Tab
Similar to the Buses and Lines Tabs shown above. The important columns are the Monitor and
Limit Group columns
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