Physics-informed neural network Lyapunov functions: PDE characterization, learning, and verification

J Liu, Y Meng, M Fitzsimmons, R Zhou - arXiv preprint arXiv:2312.09131, 2023 - arxiv.org
We provide a systematic investigation of using physics-informed neural networks to compute
Lyapunov functions. We encode Lyapunov conditions as a partial differential equation (PDE) …

Real power modulation strategies for transient stability control

RT Elliott, H Choi, DJ Trudnowski, T Nguyen - IEEE Access, 2022 - ieeexplore.ieee.org
Transient stability control of power systems is based on actions that are taken automatically
following a disturbance to ensure that the system remains in synchronism. Examples of such …

Approximating regions of attraction of a sparse polynomial differential system

M Tacchi, C Cardozo, D Henrion, JB Lasserre - IFAC-PapersOnLine, 2020 - Elsevier
Motivated by stability analysis of large scale power systems, we describe how the Lasserre
(moment-sums of squares, SOS) hierarchy can be used to generate outer approximations of …

Distributed stability conditions for power systems with heterogeneous nonlinear bus dynamics

P Yang, F Liu, Z Wang, C Shen - IEEE Transactions on Power …, 2019 - ieeexplore.ieee.org
This article derives distributed conditions that guarantee the system-wide stability for power
systems with nonlinear and heterogeneous bus dynamics interconnected via power …

Compositionally verifiable vector neural Lyapunov functions for stability analysis of interconnected nonlinear systems

J Liu, Y Meng, M Fitzsimmons, R Zhou - arXiv preprint arXiv:2403.10007, 2024 - arxiv.org
While there has been increasing interest in using neural networks to compute Lyapunov
functions, verifying that these functions satisfy the Lyapunov conditions and certifying …

Moment-SOS hierarchy for large scale set approximation. Application to power systems transient stability analysis

M Tacchi - 2021 - laas.hal.science
This thesis deals with approximating sets using Lasserre's moment-SOS hierarchy. The
motivation is the increasing need for efficient methods to approximate sets of secure …

Transient stability analysis of power systems via occupation measures

C Josz, DK Molzahn, M Tacchi… - 2019 IEEE Power & …, 2019 - ieeexplore.ieee.org
We propose the application of occupation measure theory to the classical problem of
transient stability analysis for power systems. This enables the computation of certified inner …

Distributed conditions for small-signal stability of power grids and local control design

S Baros, A Bernstein… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
Operating modern power grids with stability guarantees is markedly important. Typical
methods for analyzing and certifying power grid stability are largely centralized relying on …

A multiple-comparison-systems method for distributed stability analysis of large-scale nonlinear systems

S Kundu, M Anghel - Automatica, 2017 - Elsevier
Lyapunov functions provide a tool to analyze the stability of nonlinear systems without
extensively solving the dynamics. Recent advances in sum-of-squares methods have …

Algorithmic construction of lyapunov functions for continuous vector fields via convex semi-infinite programs

R Gupta, S Chattopadhyay, P Paruchuri… - arXiv preprint arXiv …, 2023 - arxiv.org
This article presents a novel numerically tractable technique for synthesizing Lyapunov
functions for equilibria of nonlinear vector fields. In broad strokes, corresponding to an …