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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/7088
Title: An indirect UPFC model to enhance reusability of Newton power-flow codes
Authors: Bhowmick S.
Das B.
Kumar N.
Published in: IEEE Transactions on Power Delivery
Abstract: Power-flow modeling of a unified power-flow controller (UPFC) increases the complexities of the computer program codes for a Newton-Raphson load-flow (NRLF) analysis. This is due to the fact that modifications of the existing codes are needed for computing power injections, and the elements of the Jacobian matrix to take into account the contributions of the series and shunt voltage sources of the UPFC. Additionally, new codes for computing the UPFC real-power injection terms as well as the associated Jacobian matrix need to be developed. To reduce this complexity of programming codes, in this paper, an indirect yet exact UPFC model is proposed. In the proposed model, an existing power system installed with UPFC is transformed into an augmented equivalent network without any UPFC. Due to the absence of any UPFC, the augmented network can easily be solved by reusing the existing NRLF computer codes to obtain the solution of the original network containing UPFC(s). As a result, substantial reduction in the complexities of the computer program codes takes place. Additionally, the proposed model can also account for various practical device limit constraints of the UPFC. © 2008 IEEE.
Citation: IEEE Transactions on Power Delivery (2008), 23(4): 2079-2088
URI: https://doi.org/10.1109/TPWRD.2008.923105
http://repository.iitr.ac.in/handle/123456789/7088
Issue Date: 2008
Keywords: Flexible ac transmission systems (FACTS)
Newton power flow
Unified power-flow controller (UPFC)
ISSN: 8858977
Author Scopus IDs: 9734517100
7403286062
55464648500
Author Affiliations: Bhowmick, S., Department of Electrical Engineering, Delhi College of Engineering, Delhi 110 042, India
Das, B., Department of Electrical Engineering, Indian Institute of Technology, Roorkee 247 667, India
Kumar, N., Department of Electrical Engineering, Delhi College of Engineering, Delhi 110 042, India
Funding Details: Manuscript received January 29, 2007; revised December 12, 2007. First published July 2, 2008; current version published September 24, 2008. This work was supported by the All India Council for Technical Education (AICTE) sponsored R&D Project in the Flexible AC Transmission Systems (FACTS) Research Laboratory at the Department of Electrical Engineering, Delhi College of Engineering, Delhi, India. Paper no. TPWRD-00039-2007.
Corresponding Author: Bhowmick, S.; Department of Electrical Engineering, Delhi College of Engineering, Delhi 110 042, India; email: s_bhow@rediffmail.com
Appears in Collections:Journal Publications [EE]

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