Powerflow Single-line Diagram
PSS®E is a trusted leader in the power industry for electric transmission system analysis and planning. Used by transmission planners, operations planners, consultants, and others in over 115 countries worldwide, PSS®E is powerful, customizable, and fully-featured. With the addition of integrated node-breaker support in version 34, PSS®E continues to lead the market in advances in electric transmission modeling and simulation software.
In addition to the base PSS®E software package, there is a rich ecosystem of optional add-on modules that provide extended capabilities to PSS®E users. See the “Add-On Modules” Tab for more information. ***Siemens PTI has recently invested heavily in the development of many new add-on modules, and we have even more coming out soon, so be sure to check the “Add-On Modules” Tab regularly!***
How to Purchase
PSS®E full commercial version
Please contact us for a quote
PSS®E University Edition
Our full, commercially licensed PSS®E analytical suite is offered at a special university price for education purposes and non-externally funded research.
Standard annual license terms allow one year of program use by Utility Companies to make engineering computations relating to Lessee's electric power generating and distributing system. Only those who own or operate electric power systems can purchase the software. It is not available for consulting or research purposes.
PSS®E Xpress (Power Flow)
PSS®E Xpress Plus (Power Flow, Short Circuit)
A free version of our world leading PSS®E software suite available at no cost for faculty and students, offering full analytical capabilities for systems up to 50 buses.
PSS®E evaluation version
The 30 day evaluation version of PSS®E with OPF and GIC may be obtained for evaluation purposes up to 50 buses. Evaluations are not available to individuals, students or universities.
The PSS®E base package includes:
Fast and robust power flow solution for network models up to 200,000 buses
Lightning-fast steady-state contingency analysis, including automatic corrective actions and remedial action scheme modeling
Full node-breaker support for detailed modeling of substation topology
Automated PV/QV analysis with plot generation
Powerful program automation and customization with full-featured Python® API
Balanced and unbalanced fault analysis, contingency analysis (deterministic and probabilistic)
Modern graphical user interface
Comprehensive power flow and dynamics model library including emerging technologies such as advanced FACTS devices and wind turbines
Code-based, user-written model building
Powerful, easy-to-use integrated plot facility
Graphical construction of user-defined controller models
The PSS®E base package can be enhanced to include one or all of the following modules:
Modeling and Data Exchange/Interface Modules
Enhanced Performance / Workflow Speedup Modules
CIM Importer *
Import CIM models from other systems (e.g. EMS) directly into PSS®E, allowing model comparison and validation between operations and planning, model maintenance, data interoperability and exchange, simplified NERC-MOD-33 compliance, plus many more uses!
Model Management Module*
Centrally manage all of your PSS®E data, files, projects, changes, etc. across multiple users and time horizons – from directly within PSS®E. Lightweight, easy to use, and barely any IT burden to deploy. Instantly construct and validate scenarios and basecases on demand. This can be used to functionally replace the “Open Case” step in PSS®E with a “Load Model Definition” step. It allows you to record projects directly in PSS®E (editing the network data through the datagrids or slider diagrams), and add these project definitions directly into the model database. The module supports a batch mode for streamlining model series development for regional model development efforts and automatic next-day model building for operations studies. Also, it is fully scalable and suitable for any size modeling team – big or small.
PSCAD Network Data Conversion*
Directly translate PSS®E network models into high-fidelity PSCAD electromagnetic transients models. Complex PSCAD machine and HVDC models can then be integrated into this network model for sophisticated analysis. PSS®E and PSCAD are the most widely used and trusted tools in their respective domains – now you have the ability to simplify & streamline your workflows involving these two tools.
Operations Data Interface Module (PI Historian & SCADA Integration)*
Interface for importing real-time and historic telemetry data from measurement data sources (e.g. PI Historian) into PSS®E. Example use cases are to calculate and set ambient-adjusted and dynamic ratings in PSS®E for off-line analysis, and to obtain more accurate generation and load profiles.
Graphical Model Builder (GMB)
Graphical Model Builder (GMB) module is a powerful and easy to use dynamics model development tool based on graphic representation of control block diagrams. Accurate power system planning requires that precise models be used in the simulation software. PSS®E software is designed for dynamic modeling of complex systems. GMB allows specialized modeling by supporting both standard and non-standard dynamic models.
Data Visualization and Reporting Module*
Provides PSS®E users with new ways of interacting with their power flow and dynamics output data, and simplifies the analysis and visualization of these results.
PSCAD/PSS®E Co-Simulation Module*
Hybrid simulation interface between PSCAD EMT and PSS®E transient stability applications. Allows complex PSCAD models to communicate with a PSS®E transient stability time-domain simulation. The PSCAD side system equivalent gets updates from PSS®, and the PSS®E side gets updates from the in PSCAD models at each time step. This hybrid simulation allows dynamic system equivalents in PSCAD, more accurate model behavior in PSS®E, and different versions of PSS®E running simultaneously.
Small Signal Stability Analysis Module*
Small signal stability analysis module integrated into PSS®E for performing small-signal stability, sub-synchronous resonance, eigenvalue analysis, and power system stabilizer tuning.
Advanced Contingency Analysis and RAS Tools*
Extended tools for allowing PSS®E users to perform powerful powerflow and contingency analysis customizations, including the ability to model Remedial Action Schemes (RAS) and Special Protection Systems (SPS). Includes fast PSS®E contingency analysis results APIs, contingency results to database APIs, powerflow and contingency analysis Python extension framework and functions for complex, user-defined RAS and SPS schemes.
Transfer Analysis and Sensitivity Module*
Integrates the functionality of MUST directly into PSS®E. We’ve also made extensive performance/stability improvements, and added new functionality based on user feedback: ATC/ATF calculation, flowgate generation, new Python GUI, and completed Python API.
The PSS®E Dynamic Simulation module is a versatile tool to investigate system response to disturbances that cause large and sudden changes in the power system. The dynamic simulation module employs a vast library of built-in models for modeling different types of equipment, and with capability to create user defined models of any complexity. An integrated dynamic simulation plotting package allows for quick generation of plotting with ability to export to several popular graphic formats.
Geomagnetic Induced Currents (GIC)
Power system planners and operators require technical tools to conduct studies to assess the impact of GIC currents in the power grid and prepare mitigation measures. The value added GIC module for PSS®E meets their requirement using the latest method of calculation recommended by NERC. The method used is the induced voltages in transmission lines from the voltage sources.
Eigenvalue and Modal Analysis (NEVA)
Stability problems, such as inter-area oscillations, have become increasingly common in large interconnected power systems. The Eigenvalue and Modal Analysis (NEVA) module provides an extension of analytical methods to examine these oscillations. Used with the PSS® Product Suite, the NEVA module provides methods to investigate long-term stability, allows a deeper view into eigenvectors, determines the best damping locations, and allows evaluation of damping strategies.
Optimal Power Flow (OPF)
The Optimal Power Flow (OPF) module goes beyond traditional load flow analysis to provide the ability to fully optimize and refine your transmission systems. OPF improves the efficiency of power system performance studies by adding intelligence to the load flow solution process. Whereas the conventional load flow relies on the engineer to systematically investigate a variety of solutions before arriving at a satisfactory or good solution, OPF automatically adjusts controls to determine the best solution.
Short Circuit Calculations
PSS®E Short Circuit module has a number of short circuit calculation algorithms to meet the diverse needs of fault analyses. All algorithms are self-contained analyses in PSS®E. They require a valid power flow working case and the power system sequence data.
Transmission Line Calculator / Line Properties Module
The Transmission Line Calculator module calculates branch impedances from line geometry models. Also known as the Line Properties Module.
Parallel Processing Module for Dynamics*
Optional add-on module for PSS®E that provides up to 25x speedup of dynamics simulations on a single workstation. It allows you to run multiple simulations in parallel by deploying a single simulation on each CPU core / thread of your workstation. Allows you to accomplish in minutes what normally takes hours! Easy to deploy – simple installation with no IT burden. Easy to use – immediate benefits, without a big learning curve.
Comprehensive modeling capabilities enabling sophisticated analyses and accuracy while saving time
Improved system reliability while saving and lowering infrastructure costs
Improved work processes and efficiency
Integration into a client’s workflow through built-in Python APIs.
Rapid assessments provide for fast response to constantly changing network conditions and consequential impacts
Anticipate network problems and analyze alternatives with speed and ease
Calculates the area exchanges in the planning network model.
40+ year industry “tool of reference” and data format for transmission studies.
PSS®E produces the fastest and most accurate results of any competitor.
Massive customer ecosystem à access to scripts, help, information sharing, etc.
Most comprehensive model library in industry
Users can automate their workflows via scripting
Integrates with other tools commonly used by our customers (e.g. PSCAD, ASPEN, Energy Management Systems)
Comprehensive analysis that aligns with regulations
PSS®E Version 34.0 is here and the most exciting new enhancement is integrated node-breaker support. Siemens PTI’s expert engineering team has implemented a carefully designed approach to node-breaker modeling. The ability to manage and analyze detailed substation topology provides planners with even more powerful and accurate study capabilities.
With PSS®E 34 node-breaker it is possible to:
Auto-generate substation layouts to easily create complex topologies, including the ability to graphically manipulate details and fine tune the design
Simulate complex contingencies at the breaker level to accurately portray protection behavior
Readily compare planning and operation models at the substation level, which can aid in power flow base case validation and NERC MOD 33 compliance
Visualize substation topology at the device level with PSS®E single-line diagrams, allowing you to view power flow results at individual buses, breakers, and switches.
The best part is that the node-breaker tools in PSS®E 34 come with no additional cost!
Additional enhancements to PSS®E 34
Interface, diagram and plotter improvements
Improved power flow models
Customizable ratings groups
Geomagnetic Induced Current (GIC) analysis improvements
New dynamics models
Built on proven technology, PSS ®E Version 33 delivers new features and enhancements to:
Improve your work flow
Analyze effects of a Geo-Magnetic
Disturbance (GMD) on your network
Utilize all available processors during contingency analysis
Support grid code compliance
Provide preventative security capabilities
Geomagnetic Induced Currents (GIC) calculation module
Native Induction Machine Model
Dynamic model standardization
Preventive Security Constrained OPF
N-1-1 Contingency Solution
If you are currently a PSS®E customer, you can download PSS®E from the User Support downloads page located here.
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