Title
On the Need for Communication for Voltage Regulation of Power Distribution Grids
Abstract
We consider the problem of regulating the voltage profile of a power distribution grid by controlling the reactive power injection of distributed microgenerators. We define a very general class of purely local feedback controllers in which reactive power injection is adjusted based on the local voltage measurements. This class includes most of the solutions proposed in the literature and in the latest grid codes. We show that these strategies do not guarantee the desired regulation, as each of them can have an equilibrium that is not feasible with respect to the desired voltage and power constraints. We then propose a networked feedback law to show that, by adding short-range communication between microgenerators, it is possible to design control strategies that provably converge to the feasible set. This fundamental performance gap between local and networked strategies is finally illustrated via simulations.
Year
DOI
Venue
2019
10.1109/TCNS.2019.2921268
IEEE Transactions on Control of Network Systems
Keywords
Field
DocType
Reactive power,Voltage control,Voltage measurement,Mathematical model,Power measurement,Power distribution,Reactive power control
Decentralised system,Control theory,Voltage,AC power,Voltage regulation,Feasible region,Performance gap,Grid,Mathematics,Distribution grid
Journal
Volume
Issue
ISSN
6
3
2325-5870
Citations 
PageRank 
References 
1
0.38
0
Authors
4
Name
Order
Citations
PageRank
Saverio Bolognani116018.91
Ruggero Carli289469.17
Guido Cavraro36910.25
Sandro Zampieri41470101.34