106 citations · 180 across the 29 of their papers we have counts for
35 papers
Power Grid Behavioral Patterns and Risks of Generalization in Applied Machine Learning
Shimiao Li, Jan Drgona, Shrirang Abhyankar +1
Recent years have seen a rich literature of data-driven approaches designed for power grid applications. However, insufficient consideration of domain knowledge can impose a high r…
Actionable Three-Phase Infeasibility Optimization with Varying Slack Sources
Elizabeth Foster, Timothy McNamara, Amritanshu Pandey +1
Modern distribution grids that include numerous distributed energy resources (DERs) and battery electric vehicles (BEVs) will require simulation and optimization methods that can c…
Towards Practical Physics-Informed ML Design and Evaluation for Power Grid
Shimiao Li, Amritanshu Pandey, Larry Pileggi
When applied to a real-world safety critical system like the power grid, general machine learning methods suffer from expensive training, non-physical solutions, and limited interp…
Circuit-theoretic Line Outage Distribution Factor
Shimiao Li, Amritanshu Pandey, Larry Pileggi
This work presents the design of AC line outage distribution factor created from the circuit-theoretic power flow models. Experiment results are shown to demonstrate its efficacy i…
Two-Stage Homotopy Method to Incorporate Discrete Control Variables into AC-OPF
Timothy McNamara, Amritanshu Pandey, Aayushya Agarwal +1
Alternating-Current Optimal Power Flow (AC-OPF) is an optimization problem critical for planning and operating the power grid. The problem is traditionally formulated using only co…
Three-Phase Infeasibility Analysis for Distribution Grid Studies
Elizabeth Foster, Amritanshu Pandey, Larry Pileggi
With the increase of distributed energy resources in the distribution grid, planning to ensure sufficient infrastructure and resources becomes critical. Planning at the distributio…
A Convex Method of Generalized State Estimation using Circuit-theoretic Node-breaker Model
Shimiao Li, Amritanshu Pandey, Larry Pileggi
An accurate and up-to-date topology is critical for situational awareness of a power grid; however, wrong switch statuses due to physical damage, communication error, or cyber-atta…
Analytical Inverter-Based Distributed Generator Model for Power Flow Analysis
Naeem Turner-Bandele, Amritanshu Pandey, Larry Pileggi
Quantifying the impact of inverter-based distributed generation (DG) sources on power-flow distribution system cases is arduous. Existing distribution system tools predominately mo…
Combined Transmission and Distribution State-Estimation for Future Electric Grids
Amritanshu Pandey, Shimiao Li, Larry Pileggi
Proliferation of grid resources on the distribution network along with the inability to forecast them accurately will render the existing methodology of grid operation and control…
Fast AC Steady-State Power Grid Simulation and Optimization Using Prior Knowledge
Aayushya Agarwal, Amritanshu Pandey, Larry Pileggi
Fast and accurate optimization and simulation is widely becoming a necessity for large scale transmission resiliency and planning studies such as N-1 SCOPF, batch contingency solve…
Dynamic Graph-Based Anomaly Detection in the Electrical Grid
Shimiao Li, Amritanshu Pandey, Bryan Hooi +2
Given sensor readings over time from a power grid, how can we accurately detect when an anomaly occurs? A key part of achieving this goal is to use the network of power grid sensor…
A WLAV-based Robust Hybrid State Estimation using Circuit-theoretic Approach
Shimiao Li, Amritanshu Pandey, Larry Pileggi
For reliable and secure power grid operation, AC state-estimation (ACSE) must provide certain guarantees of convergence while being resilient against bad-data. This paper develops…
Incremental Model Building Homotopy Approach for Solving Exact AC-Constrained Optimal Power Flow
Amritanshu Pandey, Aayushya Agarwal, Larry Pileggi
Alternating-Current Optimal Power Flow (AC-OPF) is framed as a NP-hard non-convex optimization problem that solves for the most economical dispatch of grid generation given the AC-…
A LASSO-Inspired Approach for Localizing Power System Infeasibility
Shimiao Li, Amritanshu Pandey, Aayushya Agarwal +2
A method is proposed to identify and localize the cause of network collapse with augmented power flow analysis for a grid model with insufficient resources. Owing to heavy network…
A Circuit-Theoretic Approach to State Estimation
Shimiao Li, Amritanshu Pandey, Soummya Kar +1
Traditional state estimation (SE) methods that are based on nonlinear minimization of the sum of localized measurement error functionals are known to suffer from non-convergence an…
SUGAR-R: Robust Online Restoration Platform for SCADA-Absent Grid
Amritanshu Pandey, Aayushya Agrawal, Marko Jereminov +1
Secure and fast grid restoration from a collapsed state is increasingly critical as blackouts are becoming more prevalent around the globe. Generally, the restoration of grid durin…
Implicitly Modeling Frequency Control within Power Flow
Aayushya Agarwal, Amritanshu Pandey, Marko Jereminov +1
In this paper, we extend a circuit-based, current-voltage power flow formulation to include frequency deviations and implicitly model generator primary and secondary control action…
Steady-State Simulation for Combined Transmission and Distribution Systems
Amritanshu Pandey, Larry Pileggi
The future electric grid will consist of significant penetration of renewable and distributed generation that is likely to create a homogenous transmission and distribution (T&D) s…
Enhanced Modelling Framework for Equivalent Circuit-Based Power System State Estimation
Aleksandar Jovicic, Marko Jereminov, Larry Pileggi +1
The equivalent split-circuit formulation is a novel approach that has recently been applied to a range of power system related problems. As a result, a linear and a nonlinear metho…
Improving Voltage Profile of the Nigerian Power Grid
Amritanshu Pandey, Aayushya Agarwal, Marko Jereminov +3
Extreme voltages at the system nodes are one of the primary causes for total and partial collapse of the Nigerian grid. In this paper, we develop a framework to re-dispatch the vol…
A Probabilistic Approach to Power System State Estimation using a Linear Algorithm
Martin R. Wagner, Marko Jereminov, Amritanshu Pandey +1
An equivalent circuit formulation for power system analysis was demonstrated to improve robustness of Power Flow and enable more generalized modeling, including that for RTUs (Remo…
Robust and Efficient Power Flow Convergence with G-min Stepping Homotopy Method
Marko Jereminov, Athanasios Terzakis, Martin Wagner +2
Recent advances have shown that the circuit simulation algorithms that allow for solving highly nonlinear circuits of over one billion variables can be applicable to power system s…
Equivalent Circuit Programming for Estimating the State of a Power System
Marko Jereminov, Aleksandar Jovicic, Martin R. Wagner +2
An Equivalent Circuit Programming (ECP) approach that expresses the optimality conditions of an optimization problem in terms of an equivalent circuit model and uses circuit simula…
Robust Sequential Steady-State Analysis of Cascading Outages
Amritanshu Pandey, Aayushya Agarwal, Marko Jereminov +3
Simulating potential cascading failures can be useful for avoiding or mitigating such events. Currently, existing steady-state analysis tools are ill-suited for simulating cascadin…