Issue in OneLiner V14.8 unstable power swing region calculation on lines with tap buses

We had discovered a calculation error in OneLiner V14.8 calculation of PRC-026 Attachment B unstable power swing region in some cases of transmission line with tap buses.

This issue had been fixed in OneLiner version 14.8 revisions with build number 63574 or higher (Program build number is displayed in the OneLiner Help | About dialog box). Users should contact ASPEN support to request a program update with the bug fix.