A new technique for optimal allocation and sizing of capacitors and setting of LTC

Ziari, Iman, Ledwich, Gerard F., & Ghosh, Arindam (2012) A new technique for optimal allocation and sizing of capacitors and setting of LTC. International Journal of Electrical Power & Energy Systems, 46(March), pp. 250-257.

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Abstract

An iterative based strategy is proposed for finding the optimal rating and location of fixed and switched capacitors in distribution networks. The substation Load Tap Changer tap is also set during this procedure. A Modified Discrete Particle Swarm Optimization is employed in the proposed strategy. The objective function is composed of the distribution line loss cost and the capacitors investment cost. The line loss is calculated using estimation of the load duration curve to multiple levels. The constraints are the bus voltage and the feeder current which should be maintained within their standard range.

For validation of the proposed method, two case studies are tested. The first case study is the semi-urban 37-bus distribution system which is connected at bus 2 of the Roy Billinton Test System which is located in the secondary side of a 33/11 kV distribution substation. The second case is a 33 kV distribution network based on the modification of the 18-bus IEEE distribution system. The results are compared with prior publications to illustrate the accuracy of the proposed strategy.

Impact and interest:

11 citations in Scopus
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7 citations in Web of Science®

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ID Code: 55541
Item Type: Journal Article
Refereed: Yes
Keywords: Distribution system, Capacitor, Optimization
DOI: 10.1016/j.ijepes.2012.09.010
ISSN: 0142-0615
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Power and Energy Systems Engineering (excl. Renewable Power) (090607)
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
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Deposited On: 12 Dec 2012 01:50
Last Modified: 12 Jun 2013 15:22

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