189 citations · 417 across the 21 of their papers we have counts for
24 papers
Reachability Analysis for Power Systems with Heterogeneous Resources via Jordan Transformation
Damola Ajeyemi, Antonin Colot, Sairaj Dhople +2
This paper develops a computationally efficient framework for reachability analysis of transmission-level power system dynamics with synchronous generators, grid-forming and grid-f…
Small-signal Stability of a Unified Single-unit Infinite-bus Swing-equation Model for Generators and Inverters
Debjyoti Chatterjee, Nathan Baeckeland, Bala Kameshwar Poolla +3
We present a swing-equation model with generalized and equilibria-dependent inertia, damping, and synchronization constants for energy conversion interfaces with second-order activ…
Automated Synthesis of Hardware-implementable Analog Circuits for Constrained Optimization
Sachin Khoja, Kamlesh Sawant, Palak Jain +2
This paper presents an automated software toolchain for synthesizing hardware-implementable analog circuits that solve constrained optimization problems. The proposed toolchain sup…
Revisiting Power Systems Time-domain Simulation Methods and Models
Jose Daniel Lara, Rodrigo Henriquez-Auba, Deepak Ramasubramanian +3
The changing nature of power systems dynamics is challenging present practices related to modeling and study of system-level dynamic behavior. While developing new techniques and m…
Towards Optimal Primary- and Secondary-control Design for Networks with Generators and Inverters
Manish K. Singh, D. Venkatramanan, Sairaj Dhople
For power grids predominantly featuring large synchronous generators (SGs), there exists a significant body of work bridging optimization and control tasks. A generic workflow in s…
Time-domain Generalization of Kron Reduction
Manish K. Singh, Sairaj Dhople, Florian Dorfler +1
Kron reduction is a network-reduction method that eliminates nodes with zero current injections from electrical networks operating in sinusoidal steady state. In the time domain, t…
Integrated System Models for Networks with Generators & Inverters
D. Venkatramanan, Manish K. Singh, Olaolu Ajala +2
Synchronous generators and inverter-based resources are complex systems with dynamics that cut across multiple intertwined physical domains and control loops. Modeling individual g…
Model Reduction for Inverters with Current Limiting and Dispatchable Virtual Oscillator Control
Olaoluwapo Ajala, Minghui Lu, Brian Johnson +2
This paper outlines reduced-order models for grid-forming virtual-oscillator-controlled inverters with nested current- and voltage-control loops, and current-limiting action for ov…
FedPD: A Federated Learning Framework with Optimal Rates and Adaptivity to Non-IID Data
Xinwei Zhang, Mingyi Hong, Sairaj Dhople +2
Federated Learning (FL) has become a popular paradigm for learning from distributed data. To effectively utilize data at different devices without moving them to the cloud, algorit…
Singular Perturbation and Small-signal Stability for Inverter Networks
Saber Jafarpour, Victor Purba, Sairaj V. Dhople +2
This paper examines small-signal stability of electrical networks composed dominantly of three-phase grid-following inverters. We show that the mere existence of a high-voltage pow…
Reduced-order Aggregate Dynamical Model for Wind Farms
Sanjana Vijayshankar, Victor Purba, Peter J. Seiler +1
This paper presents an aggregate reduced-order model for a wind farm composed of identical parallel-connected Type-3 wind turbines. The model for individual turbines includes mecha…
Engineering Inertial and Primary-frequency Response for Distributed Energy Resources
Swaroop S. Guggilam, Changhong Zhao, Emiliano Dall'Anese +2
We propose a framework to engineer synthetic-inertia and droop-control parameters for distributed energy resources (DERs) so that the system frequency in a network composed of DERs…
Approximate moment dynamics for polynomial and trigonometric stochastic systems
Khem Raj Ghusinga, Mohammad Soltani, Andrew Lamperski +2
Stochastic dynamical systems often contain nonlinearities which make it hard to compute probability density functions or statistical moments of these systems. For the moment comput…
Design of Distributed Controllers Seeking Optimal Power Flow Solutions Under Communication Constraints
Emiliano Dall'Anese, Andrea Simonetto, Sairaj Dhople
This paper focuses on power distribution networks featuring distributed energy resources (DERs), and develops controllers that drive the DER output powers to solutions of time-vary…
Linear Approximations to AC Power Flow in Rectangular Coordinates
Sairaj V. Dhople, Swaroop S. Guggilam, Yu Christine Chen
This paper explores solutions to linearized powerflow equations with bus-voltage phasors represented in rectangular coordinates. The key idea is to solve for complex-valued perturb…
Power Divider
Yu Christine Chen, Sairaj Dhople
This paper derives analytical closed-form expressions that uncover the contributions of nodal active- and reactive-power injections to the active- and reactive-power flows on trans…
Power Systems Without Fuel
Joshua Adam Taylor, Sairaj V. Dhople, Duncan S. Callaway
The finiteness of fossil fuels implies that future electric power systems may predominantly source energy from fuel-free renewable resources like wind and solar. Evidently, these p…
Photovoltaic Inverter Controllers Seeking AC Optimal Power Flow Solutions
Emiliano Dall'Anese, Sairaj V. Dhople, Georgios B. Giannakis
This paper considers future distribution networks featuring inverter-interfaced photovoltaic (PV) systems, and addresses the synthesis of feedback controllers that seek real- and r…
Stochastic hybrid systems in equilibrium: moment closure, finite-time blowup, and exact solutions
Lee DeVille, Sairaj Dhople, Alejandro Dominguez-Garcia +1
We present a variety of results analyzing the behavior of a class of stochastic processes --- referred to as Stochastic Hybrid Systems (SHSs) --- in or near equilibrium, and determ…
Uncovering Droop Control Laws Embedded Within the Nonlinear Dynamics of Van der Pol Oscillators
Mohit Sinha, Florian Dorfler, Brian B. Johnson +1
This paper examines the dynamics of power-electronic inverters in islanded microgrids that are controlled to emulate the dynamics of Van der Pol oscillators. The general strategy o…
Regulation of Dynamical Systems to Optimal Solutions of Semidefinite Programs: Algorithms and Applications to AC Optimal Power Flow
Emiliano Dall'Anese, Sairaj Dhople, Georgios B. Giannakis
This paper considers a collection of networked nonlinear dynamical systems, and addresses the synthesis of feedback controllers that seek optimal operating points corresponding to…
Optimal Dispatch of Residential Photovoltaic Inverters Under Forecasting Uncertainties
Emiliano Dall'Anese, Sairaj V. Dhople, Brian B. Johnson +1
Efforts to ensure reliable operation of existing low-voltage distribution systems with high photovoltaic (PV) generation have focused on the possibility of inverters providing anci…
Decentralized Optimal Dispatch of Photovoltaic Inverters in Residential Distribution Systems
Emiliano Dall'Anese, Sairaj V. Dhople, Brian B. Johnson +1
Decentralized methods for computing optimal real and reactive power setpoints for residential photovoltaic (PV) inverters are developed in this paper. It is known that conventional…
Synchronization of Nonlinear Circuits in Dynamic Electrical Networks with General Topologies
Sairaj Dhople, Brian Johnson, Florian Dorfler +1
Sufficient conditions are derived for global asymptotic synchronization in a system of identical nonlinear electrical circuits coupled through linear time-invariant (LTI) electrica…