The DXT text data file that contains the parameters of the power network. The text data file is intended primarily as a medium of exchange between ASPEN OneLiner/Power Flow and other programs – such as data conversion programs.
The text data format is not intended for:
•Human readability.
•Editing by hand.
•Data exchange between different versions of ASPEN OneLiner/Power Flow.
OneLiner and Power Flow reads the text data file under the File | Open Text Data File command. The programs generates network data file under the File | Export | Network Data command.
Note: Data fields and data sections that are newly introduced in the OneLiner V15 are marked with solid line on the left border in the text below.
Each text data file contains the following information:
• Miscellaneous system parameters
• File comments
• Bus data
• Bus regulation data
• Generation Unit data
• Voltage controlled current source data
• Type 3 wind plant data
• Converter-interfaced resources data
• LoadEx data
• Load Unit data
• ShuntEx data
• Shunt Unit data
• Switched shunt data
• DC line data
• Transmission line data (also for series capacitors)
• Phase shifter data
• Two-winding transformer data
• Three-winding transformer data
• Zero-sequence mutual coupling data
• Area data
• Zone data
• Breaker data
• Impedance correction data for phase shifters.
The format of these data is described in this section.
The text data adhere to these guidelines:
1. All alphanumeric data must be within quotation marks. You can specify whether to use single or double quotation mark as the string delimiter in the Network tab of the File | Preferences dialog box. The string delimiter is stated in the beginning of the text data file. See item 1 in the [ONELINER AND POWER DATA] section.
2. Adjacent data items must be separated by one or more spaces.
3. Adjacent sections are separated by one blank line.
4. If the data for an object takes more than one line, add the character ‘\’ to the end of each line (except the last one) to let the program know that more data for the same object will follow.
5. The sections do not have to be in the order shown, except (a) the [ONELINER AND POWER FLOW DATA] section must be first, (b) the [BUS DATA] section must precede sections that refer to bus names, (c) the [BUS REGULATION DATA] section must precede the [GENERATOR DATA] section, and the [TRANSMISSION LINE DATA] section must precede the [MUTUAL DATA] section.
6. Each object must have all the values listed before the equal sign, which are needed for identification purposes.
7. Whenever possible, it is best to explicitly enter all the values after the equal sign. If the data stream for the object terminates before all the data values are read in, the program will replace the values omitted by their default values.
8. All per-unit values are in system base, except as noted otherwise.
9. Lines that start with ‘//’ (double forward slash characters) are treated as comments. The program ignores all those lines when reading text data file.
Please refer to the documentation of the Network | New commands in Section 3 for a detailed explanation of the data items, e.g., Network | New | Bus command for explanation of bus parameters.