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Title: A new approach to voltage management in unbalanced low voltage networks using demand response and OLTC considering consumer preference
Authors: Hettiwatte, S
Rahman, M. D.M
Arefi, A
Shafiullah, G. M
Keywords: Voltage unbalance
Demand response
On-load tap changers
Consumer comfort
Peak demand
Issue Date: 1-Jul-2018
Publisher: Elsevier
Citation: Cited by 63
Series/Report no.: International journal of electrical power & energy systems;Vol 99 Pages 11-27
Abstract: Voltage unbalance and magnitude violations under normal operating conditions have become main power quality problems in many low voltage (LV) distribution networks. Maintaining the voltage level in an LV network within the standard limits is the main constraining factor in increasing the network hosting ability for rooftop photovoltaic (PV). This study presents a new effective method for voltage management in unbalanced distribution networks through the implementation of optimal residential demand response (DR) and on-load tap changers (OLTCs). The proposed method minimises the compensation costs of voltage management (cost of DR and network loss), while prioritises the consumer consumption preferences for minimising their comfort level violations. A modified particle swarm optimisation algorithm (MPSO) is utilised to identify the optimal switching combination of household appliances and OLTC tap positions for the network voltage management. The proposed method is comprehensively examined on a real three-phase four-wire Australian LV network with considerable unbalanced and distributed generations. Several scenarios are investigated for improving the network voltage magnitude and unbalance considering individual and coordinated operations of DR and OLTCs (three phase tap control and independent phase tap control). Simulation results show that the coordinated approach of DR and OLTC, especially, DR integrated with OLTC independent phase tap control effectively improves the network voltage and increases the PV hosting capacity.
URI: http://localhost:80/handle/123456789/650
ISSN: 0142-0615
Appears in Collections:Research Papers - Department of Electrical and Electronic Engineering
Research Papers - SLIIT Staff Publications

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