Fully distributed peer-to-peer optimal voltage control with minimal model requirements

Lukas Ortmann*, Alexander Prostejovsky, Kai Heussen, Saverio Bolognani

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

This paper addresses the problem of voltage regulation in a power distribution grid using the reactive power injections of grid-connected power inverters. We first discuss how purely local voltage control schemes cannot regulate the voltages within a desired range under all circumstances and may even yield detrimental control decisions. Communication and, through that, coordination are therefore needed. On the other hand, short-range peer-to-peer communication and knowledge of electric distances between neighbouring controllers are sufficient for this task. We implement such a peer-to-peer controller and test it on a 400 V distribution feeder with asynchronous communication channels, confirming its viability on real-life systems. Finally, we analyze the scalability of this approach with respect to the number of agents on the feeder that participate in the voltage regulation task.

Original languageEnglish
Article number106717
JournalElectric Power Systems Research
Volume189
Number of pages9
ISSN0378-7796
DOIs
Publication statusPublished - Dec 2020

Keywords

  • Distributed control
  • Distributed optimization
  • Power distribution grids
  • Reactive power
  • Volt/VAr control

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