74 citations · 252 across the 49 of their papers we have counts for
59 papers
Strategic Data Center Load Shifting: Implications for Market Efficiency and Transmission Value
Aron Brenner, Line Roald, Saurabh Amin
Data center electricity use may reach 12% of U.S. demand by 2030, alongside growing ability to shift workloads geographically in response to prices or carbon signals. We examine th…
Day-Ahead Transmission Grid Topology Optimization Considering Renewable Energy Sources' Uncertainty
Giacomo Bastianel, Dirk Van Hertem, Hakan Ergun +1
The increasing renewable penetration introduces significant uncertainty in power system operations. At the same time, the existing transmission grid is often already congested, and…
Second-Order-Cone Formulations of Power Flow for Topology Optimization
Noah Rhodes, James Luedkte, Line Roald
Optimization problems that involve topology optimization in scenarios with large scale outages, such as post-disaster restoration or public safety power shutoff planning, are very…
Advanced Scheduling of Electrolyzer Modules for Grid Flexibility
Angelina Lesniak, Andrea Gloppen Johnsen, Noah Rhodes +1
As the transition to sustainable power generation progresses, green hydrogen production via electrolysis is expected to gain importance as a means for energy storage and flexible l…
ElectricityEmissions.jl: A Framework for the Comparison of Carbon Intensity Signals
Joe Gorka, Noah Rhodes, Line Roald
An increasing number of individuals, companies and organizations are interested in computing and minimizing the carbon emissions associated with their real-time electricity consump…
Quantifying Metrics for Wildfire Ignition Risk from Geographic Data in Power Shutoff Decision-Making
Ryan Piansky, Sofia Taylor, Noah Rhodes +3
Faults on power lines and other electric equipment are known to cause wildfire ignitions. To mitigate the threat of wildfire ignitions from electric power infrastructure, many util…
A Framework for Balancing Power Grid Efficiency and Risk with Bi-objective Stochastic Integer Optimization
Ramsey Rossmann, Mihai Anitescu, Julie Bessac +4
Power grid expansion planning requires making large investment decisions in the present that will impact the future cost and reliability of a system exposed to wide-ranging uncerta…
Cascading Blackout Severity Prediction with Statistically-Augmented Graph Neural Networks
Joe Gorka, Tim Hsu, Wenting Li +2
Higher variability in grid conditions, resulting from growing renewable penetration and increased incidence of extreme weather events, has increased the difficulty of screening for…
Multistage Stochastic Program for Mitigating Power System Risks under Wildfire Disruptions
Hanbin Yang, Noah Rhodes, Haoxiang Yang +2
The frequency of wildfire disasters has surged five-fold in the past 50 years due to climate change. Preemptive de-energization is a potent strategy to mitigate wildfire risks but…
Long Solution Times or Low Solution Quality: On Trade-Offs in Choosing a Power Flow Formulation for the Optimal Power Shutoff Problem
Eric Haag, Noah Rhodes, Line Roald
The Optimal Power Shutoff (OPS) problem is an optimization problem that makes power line de-energization decisions in order to reduce the risk of igniting a wildfire, while minimiz…
Identifying Secure Operating Ranges for DER Control using Bilevel Optimization
Kshitij Girigoudar, Line A. Roald
Active distribution grids are accommodating an increasing number of controllable electric loads and distributed energy resources (DERs). A majority of these DERs are managed by ent…
Managing Wildfire Risk and Promoting Equity through Optimal Configuration of Networked Microgrids
Sofia Taylor, Gabriela Setyawan, Bai Cui +2
As climate change increases the risk of large-scale wildfires, wildfire ignitions from electric power lines are a growing concern. To mitigate the wildfire ignition risk, many elec…
Multi-period Power System Risk Minimization under Wildfire Disruptions
Hanbin Yang, Noah Rhodes, Haoxiang Yang +2
Natural wildfire becomes increasingly frequent as climate change evolves, posing a growing threat to power systems, while grid failures simultaneously fuel the most destructive wil…
Security Constrained Optimal Power Shutoff
Noah Rhodes, Carleton Coffrin, Line Roald
Electric grid faults are increasingly the source of ignition for major wildfires. To reduce the likelihood of such ignitions in high risk situations, utilities use pre-emptive deen…
Optimal Energy Rationing for Prepaid Electricity Customers
Maitreyee Marathe, Line A. Roald
For a large (and recently increasing) number of households, affordability is a major hurdle in accessing sufficient electricity and avoiding service disconnections. For such househ…
Unifying Chance-Constrained and Robust Optimal Power Flow for Resilient Network Operations
Álvaro Porras, Line Roald, Juan Miguel Morales +1
Uncertainty in renewable energy generation has the potential to adversely impact the operation of electric networks. Numerous approaches to manage this impact have been proposed, r…
Optimal Design and Cascading Failure Evaluation of Remedial Action Schemes
Aditya Rangarajan, Line Roald
Remedial action schemes (RAS) are often seen as an alternative to building new transmission infrastructure to relieve congestion in the system. Consequently, there has been a rapid…
California Test System (CATS): A Geographically Accurate Test System based on the California Grid
Sofia Taylor, Aditya Rangarajan, Noah Rhodes +3
This paper presents the California Test System (CATS), a synthetic transmission grid in California that can be used by the public for power systems policy research without revealin…
Chance-Constrained AC Optimal Power Flow for Unbalanced Distribution Grids
Kshitij Girigoudar, Ashley M. Hou, Line A. Roald
The growing penetration of distributed energy resources (DERs) is leading to continually changing operating conditions, which need to be managed efficiently by distribution grid op…
Enabling Undergrounding of Long-Distance Transmission Lines with Low Frequency AC Technology
David K. Sehloff, Line A. Roald
With increasing prevalence of severe natural hazards and the ignition of wildfires by power lines, many power system planners are considering converting overhead lines to undergrou…
Efficient Representations of Radiality Constraints in Optimization of Islanding and De-Energization in Distribution Grids
Joe Gorka, Line Roald
Optimization of power distribution system topology is complicated by the requirement that the system be operated in a radial configuration. In this paper, we discuss existing metho…
Recursive Restoration Refinement: A Fast Heuristic for Near-Optimal Restoration Prioritization in Power Systems
Noah Rhodes, Carleton Coffrin, Line Roald
The prioritization of restoration actions after large power system outages plays a key role in how quickly power can be restored. It has been shown that fast and intuitive heuristi…
Exploring the Impacts of Power Grid Signals on Data Center Operations using a Receding-Horizon Scheduling Model
Weiqi Zhang, Line A. Roald, Victor M. Zavala
Data centers (DCs) can help decarbonize the power grid by helping absorb renewable power (e.g., wind and solar) due to their ability to shift power loads across space and time. How…
Co-optimization of power line shutoff and restoration under high wildfire ignition risk
Noah Rhodes, Line Roald
Electric power infrastructure has ignited several of the most destructive wildfires in recent history. Preemptive power shutoffs are an effective tool to mitigate the risk of ignit…