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Design of the Optimal ULTC Parameters in Distribution System With Distributed Generations.

Authors :
Miyoung Kim
Hara, Ryoichi
Kita, Hiroyuki
Source :
IEEE Transactions on Power Systems; Feb2009, Vol. 24 Issue 1, p297-305, 9p, 3 Black and White Photographs, 1 Chart, 14 Graphs
Publication Year :
2009

Abstract

In order that the supply of electric power remain stable and sustainable, a certain level of power quality must be maintained while securing energy resources and resolving environmental issues. The distributed generation (DG) has become an essential and indispensable element of such distribution systems from both an environmental and an energy security perspective. However, the installation of DGs in distribution systems may cause variations of voltage on distribution feeder because the DG power outputs may change randomly and dramatically. Generally, the sending voltage at substation in distribution systems can be regulated by an under load tap changer (ULTC) designed to maintain customers' receiving voltages within a predetermined range. Voltage regulation performed by ULTC calls for two parameters: the equivalent impedance and the load center voltage. Therefore, in distribution networks with DG interconnections, these parameters should be designed with attention not only to load variations but also to DG outputs. This paper proposes a method for designing ULTC parameters with reference to variations in DG output. The proposed algorithm is tested with IEEE 13-node system and Korean model network. The results demonstrate the validity of the proposed design method for varying DG distribution. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
08858950
Volume :
24
Issue :
1
Database :
Complementary Index
Journal :
IEEE Transactions on Power Systems
Publication Type :
Academic Journal
Accession number :
39366343
Full Text :
https://doi.org/10.1109/TPWRS.2008.2004830