OneLiner comes with several distance relay library files with .DRL extension: ABB.drl, ALSTOM.drl, ASPEN.drl, SIEMENS.drl, ZR20.drl
ASPEN OneLiner reads the relay library ASPEN.DRL when it begins execution. The program then uses the parameters within the relay library to compute the time delay of relays and to plot their characteristics.
The default relay library ASPEN.DRL that comes with OneLiner contains some of the more commonly used relay types. The other three .DRL files contain additional distance relay types. If you wish to use relays types in these files, you must first move them to the default relay library using the Distance Relay Editor. The procedure is as follows:
1. Start OneLiner. Execute the Tools | Run Distance Relay Editor command. This command will launch the Distance Relay Editor and open the default library at the same time.
2. Within the Distance Relay Editor, execute the Type | Copy from Another Library command. Follow instructions to copy one or more distance relay types from another library into ASPEN.DRL.
3. Exit Distance Relay Editor and save changes you made to ASPEN.DRL.
Close OneLiner now and start it again. You should see the new relay types listed in the distance relay dialog box.
You can use the Distance Relay Editor to edit existing relay types and to create new distance relay types. Please see the on-line help file DS Relay Help for more information.