This dialog contains options related how Simulator reads (or writes) the PTI RAW file. The following options are on the dialog:
RAW File Version
This option is available for both reading and writing the RAW file. Simply choose the appropriate version number from the drop-down menu.
Add comments for object labels at the end of RAW file records
This option is available for both reading and writing the RAW file. Simply check to append object labels as comments to the end of data records.
Creation of transactions for loads in a different area than their terminal bus
This is only relevant when loading a RAW file. The option allows the user to select if transactions should be created for loads that are in different areas than their terminal buses.
Loads may be assigned to a different area than the load’s terminal bus. PTI offers an option that allows the user to ignore this assignment when calculating the tie-line flow for an area.
(AREA INT CODE = 1 FOR LINES ONLY)
(AREA INT CODE = 2 FOR LINES AND LOADS)
Simulator does not allow you to define a load this way and then choose to ignore it. Most RAW files that PowerWorld has seen seem to be solved ignoring the loads that are in different areas than their terminal bus by using the "lines only" option. To overcome this, when PowerWorld reads a RAW file, MW Transactions can be automatically created with the ID "RAW_LOAD". These transactions are between the load’s area and its terminal bus and are created so that the export from each area correctly matches a case solved using "lines only". If you know that your case was solved using "lines and loads", then you would not want to add the transactions. There are three options for how to deal with these possible interchange differences. The default is to let Simulator determine what is best based on the input data. If it is known what option was used in PTI, then the user can choose to either create the MW transactions or not create them. See the topic Add and Remove transactions due to tie-line loads with File Management Options for more information about adding or removing these transactions after the case has been loaded.
If not loading the RAW file with options, Simulator will determine based on the input data whether or not the transactions representing loads that are in different areas than their terminal buses need to be created.
When loading the RAW file with options, the user can select how to number the star buses of three-winding transformers. The options are to use a number that is near the primary bus number, start numbering above the maximum bus number, or specify a number at which to start the numbering.
When reading a RAW file that has comments on a given line, the comments will be loaded into the Memo field of the corresponding data record. However, the Memo field will not be written back out when saving a RAW file.
Three-Winding Transformer Star Bus Numbering.
The PTI RAW format does not include separate buses which represent the internal star buses of a three-winding transformer. When loading a RAW file, Simulator will automatically create buses for these star buses. This option provides the user a choice of how these star buses are numbered.
Estimate voltages at new buses and smooth angles across new lines
This option is only available when appending data to an existing case. By default, Simulator assumes that the voltages and angles in the new data are not known and must be estimated based on existing voltages already in the case. This assumption could be wrong if appending large sections of a case, i.e. such as a new island, or providing voltages that are already good estimates in the appended data. There is no way to determine for sure if the voltages provided in the appended data are "good" or not, thus the user can decide this.