: A major upgrade introduced in the V36 series and solidified in V37 is the support for Version-Independent compiled code ( .dll files). Previously, when an engineering firm or utility upgraded their PSS®E software, all custom User-Defined Models (UDMs) had to be recompiled using specific Fortran compilers to match the new software release. The latest engine eliminates this requirement, allowing dynamic UDM DLLs created in modern versions to run seamlessly across future releases without code modifications.
| Feature | PSS/E v34 | PSS/E v35 | |---------|-----------|-----------| | Max buses | ~100k | >150k | | Python API | COM-based / pssepath | Native psse.py v3.0 | | GPU acceleration | No | Yes (experimental) | | Grid-forming inverter models | Limited | Full library | | Jupyter integration | Via external kernel | Built-in launcher | | Long-term dynamics (hours) | Basic | Enhanced with automation | psse latest version
format based on JSON, which is becoming the standard for extensible power flow data exchange. Looking Ahead: PSS®E 37 : A major upgrade introduced in the V36
Optimized algorithms for voltage stability, contingency analysis, and optimal power flow (OPF). | Feature | PSS/E v34 | PSS/E v35
Improved stability analysis for weak grid conditions where high IBR penetration occurs. 2. Python 3 Integration
: It explores the fundamentals of User-Defined Modeling (UDM) , which is critical given the industry's shift toward VINDP in Version 36.