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Title: A trust-region based sequential linear programming approach for AC optimal power flow problems
Authors: Sampath, Lahanda Purage Mohasha Isuru
Patil, Bhagyesh V.
Gooi, Hoay Beng
Maciejowski, Jan Marian
Ling, Keck Voon
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2018
Source: Sampath, L. P. M. I., Patil, B. V., Gooi, H. B., Maciejowski, J. M., & Ling, K. V. (2018). A trust-region based sequential linear programming approach for AC optimal power flow problems. Electric Power Systems Research, 165, 134-143. doi:10.1016/j.epsr.2018.09.002
Journal: Electric Power Systems Research
Abstract: This study proposes a new trust-region based sequential linear programming algorithm to solve the AC optimal power flow (OPF) problem. The OPF problem is solved by linearizing the cost function, power balance and engineering constraints of the system, followed by a trust-region to control the validity of the linear model. To alleviate the problems associated with the infeasibilities of a linear approximation, a feasibility restoration phase is introduced. This phase uses the original nonlinear constraints to quickly locate a feasible point when the linear approximation is infeasible. The algorithm follows convergence criteria to satisfy the first order optimality conditions for the original OPF problem. Studies on standard IEEE systems and large-scale Polish systems show an acceptable quality of convergence to a set of best-known solutions and a substantial improvement in computational time, with linear scaling proportional to the network size.
ISSN: 0378-7796
DOI: 10.1016/j.epsr.2018.09.002
Rights: © 2018 Elsevier B.V. All rights reserved. This paper was published in Electric Power Systems Research and is made available with permission of Elsevier B.V.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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