Electric Power ApplicationsKNITRO is used in the electric power industry for many applications, most commonly to determine operating conditions that achieve optimal power flow (OPF). KNITRO frees engineers to model OPF problems with arbitrary objective functions and nonlinear constraints. The large-scale computational capabilities of KNITRO can address systems with tens of thousands of nodes (buses), and even optimize large systems across multiple planning scenarios. KNITRO is used in commercial applications that model:
KNITRO is the nonlinear solver engine of the latest power management and planning tools produced by Tractebel Engineering. Nonlinear AC power flow. Some OPF applications ignore transmission line capacitance and assume small phase angles to arrive at a linear model. Linear models can be solved more easily with commercial LP codes, but simplifications may have consequences. With KNITRO the fully nonlinear AC flow equations can be modeled, eliminating inaccuracies introduced by linear models. |
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Case Studies
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KNITRO for Nonlinear Optimal Power Flow Applications. KNITRO is used to solve OPF problems, including cost minimization, multi-objective optimization, and stochastic programming. Networks are modeled using nonlinear AC power balance equations. October 2006. PDF, 2 pages, 125k. | |
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AMPL models for IEEE test problems. Download example OPF problems written as AMPL text files, ready for solution by KNITRO. Small problems can be solved with the free student/evaluation versions of AMPL and KNITRO (instructions come with the problems). May 2007. As a zip file or tar.gz file, 40k. |
