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Coordinated single-phase control scheme for voltage unbalance reduction in low voltage network

Deepak Pullaguram, Sukumar Mishra, Nilanjan Senroy
Published 10 July 2017.DOI: 10.1098/rsta.2016.0308
Deepak Pullaguram
Electrical Engineering Department, Indian Institute of Technology Delhi, New Delhi 10016, India
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  • For correspondence: deepak.pullaguram@gmail.com
Sukumar Mishra
Electrical Engineering Department, Indian Institute of Technology Delhi, New Delhi 10016, India
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Nilanjan Senroy
Electrical Engineering Department, Indian Institute of Technology Delhi, New Delhi 10016, India
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Abstract

Low voltage (LV) distribution systems are typically unbalanced in nature due to unbalanced loading and unsymmetrical line configuration. This situation is further aggravated by single-phase power injections. A coordinated control scheme is proposed for single-phase sources, to reduce voltage unbalance. A consensus-based coordination is achieved using a multi-agent system, where each agent estimates the averaged global voltage and current magnitudes of individual phases in the LV network. These estimated values are used to modify the reference power of individual single-phase sources, to ensure system-wide balanced voltages and proper power sharing among sources connected to the same phase. Further, the high X/R ratio of the filter, used in the inverter of the single-phase source, enables control of reactive power, to minimize voltage unbalance locally. The proposed scheme is validated by simulating a LV distribution network with multiple single-phase sources subjected to various perturbations.

This article is part of the themed issue ‘Energy management: flexibility, risk and optimization’.

Footnotes

  • One contribution of 13 to a theme issue ‘Energy management: flexibility, risk and optimization’.

  • Accepted May 17, 2017.
  • © 2017 The Author(s)
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13 August 2017
Volume 375, issue 2100
Philosophical Transactions of the Royal Society A: Mathematical, 				Physical and Engineering Sciences: 375 (2100)
  • Table of Contents
Theme issue “Energy management: flexibility, risk and optimization” compiled and edited by John Moriarty and Pierluigi Mancarella

Keywords

voltage unbalance
single-phase source
low voltage distribution system
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Coordinated single-phase control scheme for voltage unbalance reduction in low voltage network
Deepak Pullaguram, Sukumar Mishra, Nilanjan Senroy
Phil. Trans. R. Soc. A 2017 375 20160308; DOI: 10.1098/rsta.2016.0308. Published 10 July 2017
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Research article:

Coordinated single-phase control scheme for voltage unbalance reduction in low voltage network

Deepak Pullaguram, Sukumar Mishra, Nilanjan Senroy
Phil. Trans. R. Soc. A 2017 375 20160308; DOI: 10.1098/rsta.2016.0308. Published 10 July 2017

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Article reuse

  • Article
    • Abstract
    • 1. Introduction
    • 2. Microgrid inverter control strategy
    • 3. Discrete dynamic consensus
    • 4. Simulations and results
    • 5. Conclusion
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    • Authors' contributions
    • Competing interests
    • Funding
    • Appendix A. Test system data
    • Footnotes
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  • electrical engineering

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