4 papers
Jacobian Voltage Stiffness Metric -- A Measure of Grid-Forming Capability and System Strength in IBR-Dominated Grids
Ambuj Gupta, Balarko Chaudhuri, Mark O'Malley
As power systems transition toward inverter-based resource (IBR)-dominated grids, traditional system strength definitions and metrics are becoming increasingly inadequate to charac…
Frequency-Domain Compliance Assessment of Grid-Forming Devices
Ambuj Gupta, Muhammad Sharjeel Javaid, Balarko Chaudhuri +1
Grid-ForMing Inverters (GFMIs) are expected to provide voltage stiffness to the grid. Explicitly, system operators (SOs) and regulators expect GFMIs to behave like a "voltage sourc…
Equivalent Circuit Modeling of Grid-Forming Inverters in (Sub)-Transient Time-Frame
Ambuj Gupta, Balarko Chaudhuri, Mark O'Malley
The widely accepted definition of grid-forming (GFM) inverter states that it should behave as a (nearly) constant voltage source behind an impedance by maintaining a (nearly) const…
Spatial Characterization of Sub-Synchronous Oscillations Using Black-Box IBR Models
Muhammad Sharjeel Javaid, Gabriel Covarrubias Maureira, Ambuj Gupta +4
Power systems with high penetration of inverter-based resources (IBRs) are prone to sub-synchronous oscillations (SSO). The opaqueness of vendor-specific IBR models limits the abil…