: While older versions relied heavily on specific Python distributions (like 2.7 or 3.4), newer versions require maintaining compatibility with contemporary Python environments for automation scripts and data retrieval [1, 23]. System & Hardware Requirements
Disclaimer: Software versions evolve rapidly. Always check the official Siemens PTI portal for the absolute latest build number and patch notes specific to your operating system (Win11/Linux).
: After installation, it is standard practice to set the Startup bus dimension (e.g., to 150,000) in the "Change program settings" menu to handle large-scale system cases [9].
Migrating your existing models to the requires careful planning. Here is a recommended workflow: psse latest version
: The primary breakthrough in Version 36 is the ability to create dynamic link libraries (dll) that are future-proof . Unlike previous versions, a user-defined model (UDM) created in v36 will be compatible with all future PSS®E releases without needing re-compilation [16].
platform, which emphasizes interconnected data and intelligent outcomes. Enhanced Dynamics
For users remaining on PSS®E 36 before transitioning to 37, the 36.x series (specifically 36.2 and 36.3) introduced: : While older versions relied heavily on specific
: PSS®E continues to deepen its Python support. Recent versions offer well-documented APIs and specific tools like psse_env_manager to automate the building of user-defined models [11, 34].
Transitioned to strict API-driven data structures. Introduced Version-Independent User-Defined Models (UDMs). Current Major Version
| Feature | | PSCAD 5.0 | PowerWorld 23 | DIgSILENT 2025 | | :--- | :--- | :--- | :--- | :--- | | Primary focus | Large transmission | EMT & HVDC | Market simulation | Distribution + Trans | | Max bus count | 1M+ (64-bit) | 50k | 500k | 250k | | Python API | Excellent (pandas) | Limited | Good | Good | | IBR models | Certified (IEEE 2800) | Generic | Generic | Detailed | | Price (approx.) | $25k/yr | $12k/yr | $15k/yr | $30k/yr | : After installation, it is standard practice to
Siemens planned an orderly migration. Version 34 supported both SafeNet and CodeMeter concurrently. However, starting with version 35.0, CodeMeter is mandatory. Users still on SafeNet must contact Siemens support to transition their licenses before they can install or run v35 or v36. Additionally, the CodeMeter Runtime shipped with PSSE 36.0.1 was updated to version 8.00 to address potential licensing issues.
As of late 2023 and early 2024, the most current stable release is (specifically, Version 35.8 and higher as of this writing). However, understanding the latest version goes beyond a simple version number—it involves understanding the feature sets, the shift toward subscription models, and how this specific release is redefining grid modeling.
Balanced and unbalanced short-circuit calculations adhering to international IEC and ANSI/IEEE standards.
: Streamlined workflows for steady-state, dynamic, and short-circuit analysis to handle the increasing complexity of decentralized energy grids. Strategic Importance