PSLF Simulation Engine

Effective power system analysis often requires large-scale simulations and manipulation of large volumes of data. When performing these analyses, efficient algorithms are just as important as the engineering models in which the data is used. GE Energy Consulting recognizes these imperatives, and has developed GE PSLF. The algorithms for power-flow and dynamic system analysis in the PSLF suite have been developed to handle large utility-scale systems of up to 125,000 buses. A complete set of tools allows the user to switch smoothly between data visualization, system simulation, and results analysis.

Dynamic Tools

The Dynamic Analysis package in PSLF allows users to perform transient stability analysis for multiple events on cases containing up to 125,000 buses. This tool can be run in batch mode, allowing the execution of multiple dynamic simulations without requiring user interaction. Users may also model and simulate remedial action schemes (RAS) within dynamic simulations.

Our embedded dynamic contingency analysis tool DYTOOLS is designed to assist planning engineers in the batch processing of dynamic stability simulations. The input format allows engineers to define contingencies in plain terms very similar to SSTOOLS and does not require the use of EPCL. This is the major advantage of DYTOOLS.

Steady State Analysis Tools

The Steady State Analysis package for GE PSLF allows users to perform traditional thermal and voltage analysis, static voltage stability analysis and transfer limit analysis. Thousands of contingencies can be simulated in each run. SSTOOLS offers users tremendous flexibility and has become the Steady State Contingency Analysis Tool of choice for PSLF.


ProvisoHD is a software tool that enables users to quickly and visually analyze post-contingency data produced by SSTOOLS. Reliability standards are driving planning engineers to analyze a larger number of contingencies. As a result, SSTOOLS output files can be very large (multiple GB) and fast, efficient analysis of results is critical. ProvisoHD has become the standard post-processing tool for engineers performing analysis with SSTOOLS.


GE Energy Consulting has been active in the study of geomagnetic disturbances’ effects on power systems since the late 1980s. PSLF’s GMD add-on is useful for simulating these events in both snapshot and time-domain mode, and helps users meet the requirements of the TPL-007-3h standard.

Node-Breaker Modeling

The Node-Breaker option in PSLF allows users to import and perform simulations on datasets in node-breaker formats taken from operational snapshots.

Optimal Power-flow

PSLF’s Optimal Power-flow (OPF) add-on provides valuable post-contingency instructions for corrective actions.