OneLiner simulation of CIRs in Islands Without Traditional Generators
The converter-interfaced resources (CIR) model in OneLiner V15 is designed to simulate these devices in grid-following operation only
Mar 28, 2022
Issues in OneLiner V15
We discovered and fixed the following issues in the program recently
Mar 22, 2022


OneLiner V15.5 fault current calculation in networks with Converter Interfaced Resources
We had discovered that copies of the OneLiner V15.5 that users downloaded from ASPEN between January 13 and February 25, 2022
Feb 26, 2022
Error in OneLiner bus fault current report
We just discovered that the total fault current reported by ASPEN for bus faults and close-in faults
Dec 19, 2021


Typo in the Line DB impedance report
We discovered a typo in the overhead line and structure nodal impedance matrix report in ASPEN Line Database V2.7 and earlier
Nov 15, 2021


Check Relay Loadability at 0.85 per-unit voltage using ratings in MVA
In OneLiner v15.4 or earlier when the ratings of lines and transformers are entered in the unit of MVA
Oct 6, 2021
Copy Equipment Error in OneLiner V15.3
We had discovered a software bug in the OneLiner v15.3 program command: "Network | Copy Equipment"
Aug 22, 2021
Network Access to HASP HL-Net Key will be discontinued
ASPEN OneLiner, Power Flow, and DistriView software (ASPEN software) released after January 1, 2022, will no longer work with the...
Jun 15, 2021


Error in the OneLiner Paste Equipment and Merge File Commands
We had discovered an error in the OneLiner program commands: "Network | Paste Equipment" and "File | Merge File"
May 17, 2021
PSRC Report on Fault Calculation for Wind Turbine Generators
The final report of PSRC Working Group C24 titled "Modification of Commercial Fault Calculation Programs for Wind Turbine Generators."
Jul 1, 2020