Optimum Reactive Power Dispatch and Identification of Critical On-load Tap Changing (OLTC) Transformers

Yesuratnam, G and Thukaram, D (2007) Optimum Reactive Power Dispatch and Identification of Critical On-load Tap Changing (OLTC) Transformers. In: Electric Power Components and Systems, 35 (6). pp. 655-674.

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Abstract

The voltage stability problem has become a major concern in planning and operation of today’s power system as a result of stressed conditions. It is known that the following disturbances, on-load tap changers (OLTCs), act to restore the load bus voltage and thus restore the load power to near pre-disturbance level. But the operation of OLTCs has a significant influence on voltage stability under some operating conditions. This article discusses the effect of OLTCs with different objectives of reactive power dispatch and identify critical OLTCs based on voltage stability criteria. Results obtained on an equivalent system of 24-node EHV system are presented.

Item Type:	Journal Article
Publication:	Electric Power Components and Systems
Publisher:	Taylor & Francis Group
Additional Information:	Copyright of this article belongs to Taylor & Francis Group.
Keywords:	reactive power dispatch;OLTC transformers;voltage stability;L-index
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	03 Jun 2008
Last Modified:	19 Sep 2010 04:45
URI:	http://eprints.iisc.ac.in/id/eprint/14138

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