Smart Loads for Voltage Control in Distribution Networks

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Title: Smart Loads for Voltage Control in Distribution Networks
Authors: Akhtar, Z
Chaudhuri, B
Hui, S
Item Type: Journal Article
Abstract: This paper shows that the smart loads (SLs) could be effective in mitigating voltage problems caused by photovoltaic (PV) generation and electric vehicle (EV) charging in low-voltage (LV) distribution networks. Limitations of the previously reported SL configuration with only series reactive compensator (SLQ) (one converter) is highlighted in this paper. To overcome these limitations, an additional shunt converter is used in back-to-back (B2B) configuration to support the active power exchanged by the series converter, which increases the flexibility of the SL without requiring any energy storage. Simulation results on a typical U.K. LV distribution network are presented to compare the effectiveness of an SL with B2B converters (SLBCs) against an SLQ in tackling under- and over-voltage problems caused by EV or PV. It is shown that SLBCs can regulate the main voltage more effectively than SLQs especially under overvoltage condition. Although two converters are required for each SLBC, it is shown that the apparent power capacity of each converter is required to be significantly less than that of an equivalent SLQ.
Issue Date: 26-Oct-2015
Date of Acceptance: 24-Sep-2015
ISSN: 1949-3061
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Start Page: 937
End Page: 946
Journal / Book Title: IEEE Transactions on Smart Grid
Volume: 8
Issue: 2
Copyright Statement: © 2015 IEEE. This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/K036327/1
Keywords: 0906 Electrical And Electronic Engineering
0915 Interdisciplinary Engineering
Publication Status: Published
Appears in Collections:Faculty of Engineering
Electrical and Electronic Engineering

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