Simulator 16 User Guide - PowerWorld

Added new Custom Monitoring to the contingency analysis tool. This allows you to setup
monitoring of a field of a specific object (or all objects of a specific type) and report these
fields values as limit violations in the contingency analysis. Appropriate advanced filters can
also be specified so that violations are only reported if specified pre-contingency or postcontingency
conditions are met.
"Close with Breakers" action is now available. This will attempt to identify breakers that can
be closed in order to energize a device rather than changing the status of the device itself.
Fault Analysis
Added total fault impedance field to Bus, to store the Thevenin R and X needed to calculate
the total fault X/R ratio.
Added ability to define a list of Fault Definitions (similar to a list of contingency definitions).
These faults can then be processed as a batch and the results of Fault Current Magnitude
and Angle, and Thevenin impedance at the fault can be automatically saved for each fault.
File Formats
When using the Present Topological Differences from Base Case tool, added the ability to
save the removed elements in the EPC file format using status values of -4.
Modified the writing of GE EPC file so that Multi-Terminal DC converters will write out the
"aloss" parameter in a manner consistent with how the EPCL file mtTAP.p expects to ensure
the EPCL operates appropriate for WECC data files.
When reading from an EPC file, added the reading of the area and zone designation of a GE
branch and transformer.
Added a log warning message when appending an EPC file which causes a transformer
branch to be converted to a normal branch.
When loading in EPC files and the latitude and longitude values are both zero, both entries
will be ignored as invalid.
When appending an EPC file with a scheduled voltage for a bus, the voltage setpoints for
switched shunts and generators that are regulating this bus are now properly updated.
Modified how appending an existing three-winding transformer is handled if a new threewinding
transformer is entered which uses a bus number which is already used as a star
bus by another transformer. This is not allowed and a new bus number will automatically be
chosen.
When appending to an existing case using an EPC file, any new branches that are created
are now flagged as having just been added. This flag is then used as part of the preprocessing
feature in the power flow solution to automatically estimate appropriate voltage
magnitudes and angles for any existing or new buses that become newly energized.
Modified the writing of PTI RAW files so that switched shunt records always write out at
least one block. If none exists, a single block with 1 step and size equal to the present MVar
output is written.
When appending using the RAW file format, we now populate a field to say whether an
object is new or modified while reading.
Added an option when saving a RAW file to append object labels as comments to the end of
data records.
When appending to an existing case using a RAW file, any new branches that are created
are now flagged as having just been added. This flag is then used as part of the preprocessing
feature in the power flow solution to automatically estimate appropriate voltage
magnitudes and angles for any existing or new buses that become newly energized.
When loading the hdbexport file, modified to automatically add two labels to each
transmission line. One label starts with the "from" substation name and the other label
starts with the "to" substation name.
Modified to add additional bus labels when reading the MEAS records in the Areva CSV file.
At the end of reading in an hdbexport CSV file, if any CBTyp values were encountered that
were not recognized a dialog box will appear prompting the user to designate a Branch
©2011 PowerWorld Corporation
8