Mitigation of Voltage Unbalance in Distribution Feeders using Phase Switching Devices: A Decentralized Control Approach based on Local Measurements

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

The high penetration level of single-phase solar PVs in low voltage distribution systems has raised concern about the Voltage Unbalance (VU) level. Real-time phase reconfiguration using Dynamic Switching Devices (DSD) has been proposed as a cost-effective solution to mitigate the excessive level of Voltage Unbalance.DSDs are fast power electronics devices that could change the phase connection of a solar PV with minimum disturbances. Most of the proposed methodologies for controlling DSDs are based on a central controller and the assumption of availability of Advanced Metering Infrastructure (AMI) and a communication system. In this paper, we propose a distributed control methodology to control DSDs based on the measurement from the local node only and using the sensitivity of nodal voltage to power injection. Each DSD decides on phase swapping if it rectifies the unbalance index of the local node. We show that decreasing the Voltage Unbalance Factor (VUF) of individual nodes will improve the unbalance situation of the whole feeder. The proposed scheme does not require a communication system nor a central controller. The result of simulations confirms the efficacy of the proposed methodology.

Original languageEnglish
Pages (from-to)2875-2885
Number of pages11
JournalIEEE Transactions on Power Delivery
Volume37
Issue number4
Early online date8 Oct 2021
DOIs
Publication statusPublished - 1 Aug 2022

Fingerprint

Dive into the research topics of 'Mitigation of Voltage Unbalance in Distribution Feeders using Phase Switching Devices: A Decentralized Control Approach based on Local Measurements'. Together they form a unique fingerprint.

Cite this