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

Content Provider	IEEE Xplore Digital Library
Author	Miyoung Kim Hara, R. Kita, H.
Copyright Year	1969
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.
Sponsorship	IEEE Power Engineering Society
Starting Page	297
Ending Page	305
Page Count	9
File Size	1387792
File Format	PDF
ISSN	08858950
Volume Number	24
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Distributed control Design methodology Power supplies Power quality Energy resources Energy resolution Power system security Substations Voltage control Impedance voltage regulation Distributed generation LDC parameters (equivalent impedance, load center voltage) line drop compensation (LDC) under load tap changer (ULTC)
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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