Voltage Regulation Algorithms for Multiphase Power Distribution Grids

Time-varying renewable energy generation can result in serious under-/over-voltage conditions in future distribution grids. Augmenting conventional utility-owned voltage regulating equipment with the reactive power capabilities of distributed generation units is a viable solution. Local control opti...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on power systems Vol. 31; no. 5; pp. 3913 - 3923
Main Authors: Kekatos, Vassilis, Liang Zhang, Giannakis, Georgios B., Baldick, Ross
Format: Journal Article
Language:English
Published: New York IEEE 01.09.2016
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Accelerated proximal gradient
Acceleration
Algorithms
Control
Convergence
Data buses
Electric potential
Electric utilities
Electricity distribution
Linear approximation
linear distribution flow model
Mathematical model
Mathematical models
PV inverters
Reactive power
three-phase distribution grids
Voltage
Voltage control
ISSN:0885-8950, 1558-0679
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Time-varying renewable energy generation can result in serious under-/over-voltage conditions in future distribution grids. Augmenting conventional utility-owned voltage regulating equipment with the reactive power capabilities of distributed generation units is a viable solution. Local control options attaining global voltage regulation optimality at fast convergence rates is the goal here. In this context, novel reactive power control rules are analyzed under a unifying linearized grid model. For single-phase grids, our proximal gradient scheme has computational complexity comparable to that of the rule suggested by the IEEE 1547.8 standard, but it enjoys well-characterized convergence guarantees. Furthermore, adding memory to the scheme results in accelerated convergence. For three-phase grids, it is shown that reactive power injections have a counter-intuitive effect on bus voltage magnitudes across phases. Nevertheless, when our control scheme is applied to unbalanced conditions, it is shown to reach an equilibrium point. Numerical tests using the IEEE 13-bus, the IEEE 123-bus, and a Southern California Edison 47-bus feeder with increased renewable penetration verify the properties of the schemes and their resiliency to grid topology reconfigurations.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
content type line 23
ISSN:0885-8950
1558-0679
DOI:10.1109/TPWRS.2015.2493520