GFM 102: Stability is an online short course offered from 11 AM – 1 PM CST, Monday, 11/9 to Friday, 11/13

Registration link coming soon!

GFM 102: Stability is intended for researchers (graduate and undergraduate students, research engineers at varying levels, faculty) and working professionals from industry (power electronics manufacturers, utilities, and system operators). Broadly, it covers fundamental notions of stability from a controls engineering and system-theoretic viewpoint. Foundational elements related to small-signal and large-signal stability are reviewed adopting a technology agnostic lens. Models and modeling paradigms to facilitate analytical stability assessment at different timescales will be presented. Representation of system dynamics in state-space and in the frequency domain will follow, with a discussion on how stability is examined in each. Zooming in on grid-forming technologies, an analytical approach is adopted to examine the stability of three canonical topologies: a single unit connected to an infinite bus, parallel connections of three-phase units, and all realizable three-phase configurations of single-phase units. Taking a step closer to practice, frequency domain conditions for GFM IBR standards and stability under interconnection will be presented next. This will bridge the gap from academic treatments and analytical approaches to how grid codes can facilitate stability-enforcing operation of grid-forming technologies.

Presenters

• Nathan Baeckeland: Researcher III-Electrical Engineering, National Laboratory of the Rockies

• Sairaj Dhople: Oscar A. Schott Professor, University of Minnesota

• Bala K. Poolla: Researcher III-Electrical Engineering, National Laboratory of the Rockies

• Dominic Groß: Associate Professor, University of Wisconsin Madison

Course completion grants 1 CEU.

GFM 102: Stability is structured in 3 modules. Each module has a theoretical component and is accompanied with EMT simulation exercises that are intended to be completed individually. A short description of the modules is provided below.

Module 1: Fundamentals

  • Stability definitions and GFM-specific attributes
  • Reduced-order GFM models to facilitate stability assessment

Module 2: Stability Assessment

  • Small-signal stability: State-space and frequency-domain approaches
  • Large-signal stability: Challenges and opportunities
  • Analytical methods that scale from individual units to large networks

Module 3: Towards Specifications, Grid Codes, and Standards

  • Dynamic droop coefficients, technology-agnostic specifications, and insights from frequency sweeps
  • Making the leap to practice: specifications, grid codes, and standards