106 citations · 149 across the 17 of their papers we have counts for
23 papers
Continuous Switch Model and Heuristics for Mixed-Integer Problems in Power Systems
Aayushya Agarwal, Amritanshu Pandey, Larry Pillegi
Many power systems operation and planning computations (e.g., transmission and generation switching and placement) solve a mixed-integer nonlinear problem (MINLP) with binary varia…
Equivalent Circuit Programming for Power Flow Analysis and Optimization
Marko Jereminov, Larry Pileggi
The utility of domain-specific knowledge for modeling, simulation, and optimization has been demonstrated for various research problem domains, including power systems. The concept…
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…
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…
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…
Impact of Load Models on Power Flow Optimization
Marko Jereminov, Bryan Hooi, Amritanshu Pandey +3
Aggregated load models, such as PQ and ZIP, are used to represent the approximated load demand at specific buses in grid simulation and optimization problems. In this paper we exam…
An Equivalent Circuit Formulation for Power System State Estimation including PMUs
Aleksandar Jovicic, Marko Jereminov, Larry Pileggi +1
In this paper, a novel formulation for the power system state estimation is proposed, based on the recently introduced equivalent split-circuit formulation of the power flow proble…
Linear Power Grid State Estimation with Modeling Uncertainties
Martin R. Wagner, Marko Jereminov, Larry Pileggi
Recent advances in power system State Estimation (SE) have included equivalent circuit models for representing measurement data that allows incorporation of both PMU and RTU measur…
A Linear Formulation for Power System State Estimation including RTU and PMU Measurements
Aleksandar Jovicic, Marko Jereminov, Larry Pileggi +1
In this paper, a novel linear formulation for power system state estimation that simultaneously treats conventional and synchrophasor measurements is proposed. A linear circuit mod…
Continuously Differentiable Analytical Models for Implicit Control within Power Flow
Aayushya Agarwal, Amritanshu Pandey, Marko Jereminov +1
Achieving robust and scalable convergence for simulation of realistic power flow cases can be challenging. One specific issue relates to the disconnected solution space that is cre…
Evaluating Feasibility within Power Flow
Marko Jereminov, David M. Bromberg, Amritanshu Pandey +2
Recent development of techniques that improve the convergence properties of power flow simulation have been demonstrated to facilitate scaling to large system sizes (80k+ buses). H…
Unified power system analyses and models using equivalent circuit formulation
Amritanshu Pandey, Marko Jereminov, Xin Li +2
In this paper we propose and demonstrate the potential for unifying models and algorithms for the steady state and transient simulation of single-phase and three-phase power system…
Robust Probabilistic Analysis of Transmission Power Systems based on Equivalent Circuit Formulation
Martin R. Wagner, Amritanshu Pandey, Marko Jereminov +1
Recent advances in steady-state analysis of power systems have introduced the equivalent split-circuit approach and corresponding continuation methods that can reliably find the co…
Robust Power Flow and Three-Phase Power Flow Analyses
Amritanshu Pandey, Marko Jereminov, Martin R. Wagner +3
Robust simulation is essential for reliable operation and planning of transmission and distribution power grids. At present, disparate methods exist for steady-state analysis of th…
Aggregated Load and Generation Equivalent Circuit Models with Semi-Empirical Data Fitting
Amritanshu Pandey, Marko Jereminov, Xin Li +2
In this paper we propose a semi-empirical modeling framework for aggregated electrical load and generation using an equivalent circuit formulation. The proposed models are based on…
Improving Power Flow Robustness via Circuit Simulation Methods
Amritanshu Pandey, Marko Jereminov, Gabriela Hug +1
Recent advances in power system simulation have included the use of complex rectangular current and voltage (I-V) variables for solving the power flow and three-phase power flow pr…
Robust Convergence of Power Flow using Tx Stepping Method with Equivalent Circuit Formulation
Amritanshu Pandey, Marko Jereminov, Martin R. Wagner +2
Robust solving of critical large power flow cases (with 50k or greater buses) forms the backbone of planning and operation of any large connected power grid. At present, reliable c…