Optimal placement of phase-reconfiguration devices in low-voltage distribution network with residential PV generation

As residential PV generation penetrates in the low-voltage distribution network (LVDN), the unbalance issue may be intensified due to the asymmetry of generations/loads in different phases. Phase-reconfiguration device (PRD), which can reconfigure connected phases of residential customers, provides...

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Bibliographic Details
Published in:IET renewable power generation Vol. 14; no. 18; pp. 3752 - 3761
Main Authors: Liu, Bin, Meng, Ke, Dong, Zhao Yang, Wong, Peter K.C, Wei, Wei
Format: Journal Article
Language:English
Published: The Institution of Engineering and Technology 21.12.2020
Subjects:
convex programming
distribution networks
distribution transformer
integer programming
linear programming
load profiles
low‐voltage distribution network
LVDN
mixed‐integer linear programming
mixed‐integer nonconvex programming problem
modified IEEE system
operational constraints
optimal placement
phase‐reconfiguration device
photovoltaic power systems
power supply quality
power unbalance
PRDs
Research Article
residential customers
residential photovoltaic generation
residential PV generation
unbalance issue
voltage magnitude limits
mixed-integer nonconvex programming problem
residential PV generation
operational constraints
distribution networks
integer programming
distribution transformer
photovoltaic power systems
modified IEEE system
convex programming
linear programming
low-voltage distribution network
residential photovoltaic generation
power supply quality
load profiles
residential customers
PRDs
power unbalance
mixed-integer linear programming
LVDN
voltage magnitude limits
unbalance issue
optimal placement
phase-reconfiguration device
ISSN:1752-1416, 1752-1424
Online Access:Get full text
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Description
Summary:As residential PV generation penetrates in the low-voltage distribution network (LVDN), the unbalance issue may be intensified due to the asymmetry of generations/loads in different phases. Phase-reconfiguration device (PRD), which can reconfigure connected phases of residential customers, provides an effective method to address this issue. Noting that although the benefit brought by PRDs can vary if they are placed at different locations in the network, little literature has been reported on this topic. To bridge the research gap, this paper presents a novel method to optimally place PRDs in an LVDN aiming at minimizing the power unbalance running through the distribution transformer. The problem considers both installation, operational constraints, and boils down to a challenging mixed-integer non-convex programming problem, which is then reformulated as an efficient solvable mixed-integer linear programming problem. Moreover, operational constraints are relaxed with slack variables penalized in the objective function, which makes sure a feasible solution is always available without or with minimal operational violations. Case studies based on a modified IEEE system and a practical system in Australia demonstrate that an efficient strategy can be provided to address the unbalance issue while improving the network's power supply qualities.
ISSN:1752-1416
1752-1424
DOI:10.1049/iet-rpg.2020.0669