Strengthened the vast library of Dynamic Models: 

• Added the following IEEE 421.5 models: Excitation system models ST2C and ST3C. 

• Added the following WECC approved dynamic models: REPCC (Renewable Plant Control model), WTGWGOA (weak grid option), and WTGIBFFRA (inertial-based fast frequency response model), WTDTB1 (revised drive train model for use with Type 4 renewables with speed dependency of active power), WTPTB1 (revised pitch control model), and VHVDC1 (VSC DC dynamic model).

Visit the PSS® Software Delivery Platform to download the full installation of PSS®E 35.4 and access the release notes. The release notes include the full list of enhancements and corrections.

Voltage Droop Modeling now available - access Voltage Droop Modeling to allow voltage to be compensated by reactive power flow instead of adjusted to a setpoint.

Slider Diagram performance improvements - experience improved slider diagram performance with up to 8.7x faster response times with large diagrams.

Model battery storage in charging mode - battery storage behaviors can now be modeled with reactive capability curves and negative active power outputs.

RAWX data handling improvements - easily work with RAWX extension data directly in PSS®E spreadsheets.

Introducing the Automated Grid Code Assessment (TPL Edition)

Easily automate your NERC TPL-001 compliance process. The new module enables you to perform a fully automated NERC TPL-001 analysis with PSS®E using just your base case – meaning contingency definitions are generated automatically, and consistent reports for evidence of compliance can be easily produced. The benefits can be unlocked with these three simple steps – click here to learn more. 

Upgraded Contingency Analysis

added DC-based Preventive Security Constrained Optimal Power Flow (DCPSCOPF) solution for obtaining a fast solution to minimize control adjustments subject to operation limits constraints

Additional Report Tables
 access five additional Report Tables: PSCOPF, DC PSCOPF, AC and DC corrective actions, and RAS reports

Dynamic simulation updates- take advantage of dynamic engine and expanded model library, including:

• Generator baseload flag recognition
• NERC GP3 models – Generic synchronous generator protection model
• Set of four models for extracting phase and sequence voltage/current for renewable models

Automated Grid Code Assessment Add-on module
Easily automate your entire compliance process, ensuring a smooth compliance process with little or no interruption in making changes to the grid. By automating what is traditionally a home-grown process, PSS®E Automated Grid Code Compliance Module saves customers both time and effort. It is a turn-key solution for grid code (e.g., NERC TPL-001) analysis. 

Advanced Linear Analysis Add-on module

Official integration of PSS®MUST into PSS®E to enable transfer limit analysis, impact and sensitivity analysis and advanced contingency analysis with security constrained economic dispatch (SCED). With seamless PSS®E integration and full automation, this module complements PSS®E’s data handling and analysis functions with the most advanced and user-friendly linear analysis. 

Download Datasheet

In-development access to beta features 

• Voltage droop control – generators allow voltage to be compensated by reactive power flow instead of adjusted to a setpoint.
• AUX RAS support – integration of AUX RAS into AC contingency analysis to enable defining of remedial action schemes.

Model Management now available in 35.1

Model Management for single-user and multi-user environments is now available for PSS®E 35.1. Along with all the previous benefits provided (see 34.7 release), this new module release incorporates a seamless connection to PSS®MOD. The local edition of PSS®E Model Management provides you with all the vast benefits of a database with minor setup. With the standard edition, you can now send projects directly from the PSS®E module to PSS®MOD.

Improved Slider Diagram Performance – experience smoother zoom in/out and panning behaviors.
 

Upgraded Contingency Analysis – take advantage of the latest updates as we continue to revamp our contingency engine:

• Find the shortest path between two busses using the new rxpath API
• New contingency analysis solution parameters to better suit your analysis needs
• Integrated robust power flow solution option to help solve contingencies that fail to converge
• Base load flag recognition to control how you want machines dispatched during contingency analysis

Additional Report Tables – access 10 more classic PSS®E text reports that have been migrated to the new tabularized spreadsheet format. The new reports enable you to easily process, sort and filter data directly in PSS®E as opposed to the traditional text reports. The migration of the remaining text reports will continue.  

Expanded dynamic model library – leverage more models including CMLDxxDGU2 (a family of models which has DER_A added as part of composite load model) and IEEE 421.5 OEL5C (Overexcitation Limiter model)

Geomagnetic Induced Currents (GIC) Module Updates - including support of efield grid map.

Enhanced RAWX and Extension Data Usability – expand your use of custom fields with the following new capabilities:

• Ability to create custom tables and add custom ordering of parameters set and tables
• Leverage a full API set for reading and writing all extension data, including custom tables

Updates to the Advanced Linear Analysis Add-on Module (formerly PSS®MUST):

We continue to integrate the PSS®MUST functionalities, including transfer limit analysis and others, directly into PSS®E as an add-on module. With the release of PSS®E 35.1, the new module will include enhanced Report Tables, interactive bubble diagrams, and additional improvements to usability. This module will be further enhanced to seamlessly leverage the powerful core capabilities of PSS®E and better meet our customers’ needs.

Create custom fields using the extensible raw and sav formats – Import, store, and export any custom data by adding custom data columns to the data tables. This also provides flexibility for the Siemens team to introduce new data formats without having to release a major software version. Customer ideas: PSSE-I-445 – also check out the other six ideas merged with this one. 

Model multiple Switched Shunts at the same bus – no longer do you need to consolidate switch shunts to a single element. Achieve more realistic models with multiple switch shunts per bus with the ability to control and adjust shunts independently in power flow. Customer ideas: PSSE-I-562.

Generator reactive capability curve data (GCAP) stored with Machine Data – efficiently compare this data side-by-side. The QMin/QMax automatically updates when PGen is changed. Customer ideas: PSSE-I-461 – also check out the other three ideas merged with this one. 

Enhanced N-1-1 Spreadsheet Reporting with export capabilities – leverage the new built-in tabularized spreadsheet reports for your N-1-1 analysis. This will enable you to easily process, sort and filter data directly in PSS®E as opposed to the traditional text reports. Additionally, you can export the results directly to csv or Excel for further post processing. Customer idea: PSSE-I-197.

MUST as an add-on module - Directly invoke the MUST functionality from the PSS®E GUI and make use of the network case in PSS®E memory. Ability to develop and run a single script that uses both the PSS®E modules (such as psspy and pssarrays) as well as the MUST module (mustpy). Stay tuned for more exciting enhancements to this module.

Enhance performance with x64 bit - PSS®E 35.0 will only support x64 bit, and x32 bit installers will no longer be supplied.

New licensing system mandatory starting with PSS®E v35 - Beginning with v35.0, PSS®E will be using CodeMeter as its exclusive locking mechanism. Through v34, PSS®E supported both the old SafeNet SuperPro dongles and the new CodeMeter options to allow an orderly migration. CodeMeter enables you to leverage more flexible licensing options by offering not only a hardened dongle but also software locking and network checkout options (additional fees apply to some options). See the announcement on Freshdesk or contact support to learn more if you haven’t migrated yet.

Access new Node-breaker functionality
Define contingencies in order to isolate equipment with the “ISOLATE <equipment>” command and determine which node specific equipment is connected to via new fetch APIs.

Take advantage of improved load flow convergence
Simply use the enhanced phase shifter control adjustments to improve load flow convergence.

Study “efieldgrid” event.
Version 34.8 allows you to have the ability to use non-uniform near real-time geoelectric field data in GIC analysis.

Access our expanded Dynamics model library, including:
The integrated dynamics model library enables you to manage Industry Standards models IEEE 421.5 OEL5C & IEC 61970-302 GovSteamEU. It also enables you to access your NERC generic synchronous generator protection model; composite load model with integrated DER_A – CMLDxxDGU2 and set of four models for extracting phase and sequence voltage/current for renewable models.

Access to in-development beta features
Access the beta models – including: synchronous generator model – GENQEC and third generation renewable models – REGC_B & REEC_D that will be released with our next version of PSS®E.

No longer waste valuable time or sacrifice model accuracy by manually maintaining your various case files, projects, changes, and more. PSS®E 34.7 introduces a new base functionality that enables you to seamlessly manage the various files (base case, network models, project changes, etc.) required to build new cases - at no additional cost. The local edition of the PSS®E Model Management provides you with all the vast benefits of a database with only a minor setup burden.

• Easily build, store and manage all your case files directly in PSS®E – The integrated simple-database enables you to centrally manage all your PSS®E data, files, projects, changes, and more. Access consolidated data elements and build cases without leaving the software GUI. This mean you no longer need to manually import various files every time you want to work on a case.
• Automatically record and track your changes – Simply start recording the project changes in PSS®E and the resulting actions are automatically stored in the database for future use.
• Visualize projects with an interactive timeline view – Visualize, update, and filter various projects/phases in the new interactive timeline view. Any changes made in this view will automatically reflected in other parts of the software. 

First step taken in Contingency Revamp: Support for the Vendor Neutral Remedial Action Scheme Format - the Vendor Neutral RAS module is created to support the new and evolving Contingency and Remedial Action Scheme standard adopted in the Western United States. This standard defines a way to identify contingencies, Remedial Action Schemes (RASs) and their triggering conditions in a vendor neutral manner.

Solve even more difficult cases with the updated Robust Solution option – including a simplified interface and the introduction of an API (RSOL). Note: algorithm changes required the temporary removal of the "Save best found solution steps in Python script" functionality.

Use load threshold models per NERC requirements based on three new values – including (1) load MW threshold (2) Load P by Q (absolute value of P over Q) threshold, (3) Load bus voltage threshold.

Include more dynamic models for stability analysis, at the 200,000 bus size – this means (1) wind machines increased to 20,000 (2) CCT models increased to 150,000, and (3) line relay model connections (MXRLCX) increased to 40,000.

Additional notable enhancements:

• Perform TPL-007 Supplemental Event Calculations with Moving boxes using the latest GIC module.
• Utilize the new ability to identify intra-substation loop flows in substation diagrams.
• Leverage enhanced auto substation diagram layouts with better branch routing.
• Import PSLF version 19 EPC files