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Methodology for alleviation of voltage excursions in large power systems

Singh, SP and Raju, GS and Thukaram, D and Singh, GD (1996) Methodology for alleviation of voltage excursions in large power systems. In: International Journal of Electrical Power & Energy Systems, 18 (3). pp. 167-173.

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Official URL: http://dx.doi.org/10.1016/0142-0615(95)00018-6


This paper presents a method for minimizing the sum of the square of voltage deviations by a least-square minimization technique, and thus improving the voltage profile in a given system by adjusting control variables, such as tap position of transformers, reactive power injection of VAR sources and generator excitations. The control variables and dependent variables are related by a matrix J whose elements are computed as the sensitivity matrix. Linear programming is used to calculate voltage increments that minimize transmission losses. The active and reactive power optimization sub-problems are solved separately taking advantage of the loose coupling between the two problems. The proposed algorithm is applied to IEEE 14-and 30-bus systems and numerical results are presented. The method is computationally fast and promises to be suitable for implementation in real-time dispatch centres.

Item Type: Journal Article
Publication: International Journal of Electrical Power & Energy Systems
Publisher: Elsevier Science
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: scheduling;on-line control;mathematical programming;optimal power flow
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 04 Apr 2012 10:17
Last Modified: 04 Apr 2012 10:17
URI: http://eprints.iisc.ac.in/id/eprint/44220

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