R
Ray D. Zimmerman
Researcher at Cornell University
Publications - 63
Citations - 8205
Ray D. Zimmerman is an academic researcher from Cornell University. The author has contributed to research in topics: Electric power system & Electricity market. The author has an hindex of 23, co-authored 62 publications receiving 6999 citations.
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Journal ArticleDOI
MATPOWER: Steady-State Operations, Planning, and Analysis Tools for Power Systems Research and Education
TL;DR: The details of the network modeling and problem formulations used by MATPOWER, including its extensible OPF architecture, are presented, which are used internally to implement several extensions to the standard OPF problem, including piece-wise linear cost functions, dispatchable loads, generator capability curves, and branch angle difference limits.
Journal ArticleDOI
Stability-constrained optimal power flow
TL;DR: A new methodology that eliminates the need for repeated simulation to determine a transiently secure operating point is presented, and dynamic equations are converted to numerically equivalent algebraic equations and integrated into the standard OPF formulation.
Journal ArticleDOI
On Computational Issues of Market-Based Optimal Power Flow
TL;DR: In this article, trust region based augmented Lagrangian method (TRALM), step-controlled primal-dual interior point method (SCIPM), and constrained cost variable (CCV) OPF formulation are proposed.
Proceedings ArticleDOI
MATPOWER's extensible optimal power flow architecture
TL;DR: This paper describes the optimal power flow (OPF) architecture implemented in MATPOWER, an open-source Mat-lab power system simulation package, which utilizes an extensible architecture that allows the user to easily add new variables, constraints and costs to the standard OPF problem formulation while preserving the structure needed to use pre-compiled solvers.
Journal ArticleDOI
Fast decoupled power flow for unbalanced radial distribution systems
TL;DR: In this article, a new problem formulation of three-phase distribution power flow equations taking into account the radial structure of the distribution network is presented, and an effective solution method for general unbalanced radial distribution systems is presented.