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Grid Modeling Tools

NREL researchers develop advanced modeling tools for grid research and analysis.

Flexible Energy Scheduling Tool for Integrating Variable Generation

A model that simulates the behavior of the electric power system to help researchers understand the impacts of variability and uncertainty on power system operations.

Multi-Area Frequency Response Integration Tool

The Multi-Area Frequency Response Integration Tool (MAFRIT) is the only software tool of its kind that integrates primary frequency response (turbine governor control) with secondary frequency response (automatic generation control). It simulates the power system dynamic response in full time spectrum with variable time steps from millisecond to minutes to hours and days. Capable of simulating both normal and event conditions, this tool can represent real power system operations and thus evaluate the primary and secondary reserves adequacy. This unique interaction of a turbine governor model and a novel automatic generation control model places special emphasis on electric power systems with high penetrations of renewable generation.

Integrated Grid Modeling System

The Integrated Grid Modeling System (IGMS) is a novel electric power system modeling platform for integrated transmission-distribution analysis that co-simulates off-the-shelf tools on high=performance computing platforms to offer unprecedented resolution from independent system operator markets down to appliances and other end uses. The system simultaneously models hundreds or thousands of distribution systems in co-simulation with detailed independent system operator markets and automatic generation control-level reserve deployment.