Dc microgrid operational method for enhanced service reliability using DC bus signaling

Pyeong Ik Hwang, Gilsoo Jang, Gi Chan Pyo, Byung Moon Han, Seung Il Moon, Seon Ju Ahn

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This paper proposes a DC microgrid operational strategy and control method for improved service reliability. The objective is to supply power to as many non-critical loads as possible, while providing an uninterrupted power supply to critical loads. The DC bus signaling method, in which DC voltage is an information carrier, is employed to implement the operational strategy in a decentralized manner. During grid-connected operation, a grid-tied converter balances the power of the microgrid by controlling the DC voltage. All loads are connected to the microgrid, and operate normally. During islanded operation, distributed generators (DGs), a backup generator, or an energy storage system balances the power. However, some non-critical loads may be disconnected from the microgrid to ensure the uninterrupted power supply to critical loads. For enhanced service reliability, disconnected loads can be automatically reconnected if certain conditions are satisfied. Control rules are proposed for all devices, and detailed microgrid operational modes and transition conditions are then discussed. Additionally, methods to determine control parameter settings are proposed. PSCAD/EMTDC simulation results demonstrate the performance and effectiveness of the proposed operational strategy and control method.

Original languageEnglish
Pages (from-to)452-464
Number of pages13
JournalJournal of Electrical Engineering and Technology
Volume10
Issue number2
DOIs
Publication statusPublished - 2015 Mar 1

Fingerprint

Electric potential
Energy storage

Keywords

  • Autonomous operation
  • DC bus signaling
  • DC microgrid
  • Decentralized operation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Dc microgrid operational method for enhanced service reliability using DC bus signaling. / Hwang, Pyeong Ik; Jang, Gilsoo; Pyo, Gi Chan; Han, Byung Moon; Moon, Seung Il; Ahn, Seon Ju.

In: Journal of Electrical Engineering and Technology, Vol. 10, No. 2, 01.03.2015, p. 452-464.

Research output: Contribution to journalArticle

Hwang, Pyeong Ik ; Jang, Gilsoo ; Pyo, Gi Chan ; Han, Byung Moon ; Moon, Seung Il ; Ahn, Seon Ju. / Dc microgrid operational method for enhanced service reliability using DC bus signaling. In: Journal of Electrical Engineering and Technology. 2015 ; Vol. 10, No. 2. pp. 452-464.
@article{00fd9b719ddd44d49b4d6bf5dd0c013a,
title = "Dc microgrid operational method for enhanced service reliability using DC bus signaling",
abstract = "This paper proposes a DC microgrid operational strategy and control method for improved service reliability. The objective is to supply power to as many non-critical loads as possible, while providing an uninterrupted power supply to critical loads. The DC bus signaling method, in which DC voltage is an information carrier, is employed to implement the operational strategy in a decentralized manner. During grid-connected operation, a grid-tied converter balances the power of the microgrid by controlling the DC voltage. All loads are connected to the microgrid, and operate normally. During islanded operation, distributed generators (DGs), a backup generator, or an energy storage system balances the power. However, some non-critical loads may be disconnected from the microgrid to ensure the uninterrupted power supply to critical loads. For enhanced service reliability, disconnected loads can be automatically reconnected if certain conditions are satisfied. Control rules are proposed for all devices, and detailed microgrid operational modes and transition conditions are then discussed. Additionally, methods to determine control parameter settings are proposed. PSCAD/EMTDC simulation results demonstrate the performance and effectiveness of the proposed operational strategy and control method.",
keywords = "Autonomous operation, DC bus signaling, DC microgrid, Decentralized operation",
author = "Hwang, {Pyeong Ik} and Gilsoo Jang and Pyo, {Gi Chan} and Han, {Byung Moon} and Moon, {Seung Il} and Ahn, {Seon Ju}",
year = "2015",
month = "3",
day = "1",
doi = "10.5370/JEET.2015.10.2.452",
language = "English",
volume = "10",
pages = "452--464",
journal = "Journal of Electrical Engineering and Technology",
issn = "1975-0102",
publisher = "Korean Institute of Electrical Engineers",
number = "2",

}

TY - JOUR

T1 - Dc microgrid operational method for enhanced service reliability using DC bus signaling

AU - Hwang, Pyeong Ik

AU - Jang, Gilsoo

AU - Pyo, Gi Chan

AU - Han, Byung Moon

AU - Moon, Seung Il

AU - Ahn, Seon Ju

PY - 2015/3/1

Y1 - 2015/3/1

N2 - This paper proposes a DC microgrid operational strategy and control method for improved service reliability. The objective is to supply power to as many non-critical loads as possible, while providing an uninterrupted power supply to critical loads. The DC bus signaling method, in which DC voltage is an information carrier, is employed to implement the operational strategy in a decentralized manner. During grid-connected operation, a grid-tied converter balances the power of the microgrid by controlling the DC voltage. All loads are connected to the microgrid, and operate normally. During islanded operation, distributed generators (DGs), a backup generator, or an energy storage system balances the power. However, some non-critical loads may be disconnected from the microgrid to ensure the uninterrupted power supply to critical loads. For enhanced service reliability, disconnected loads can be automatically reconnected if certain conditions are satisfied. Control rules are proposed for all devices, and detailed microgrid operational modes and transition conditions are then discussed. Additionally, methods to determine control parameter settings are proposed. PSCAD/EMTDC simulation results demonstrate the performance and effectiveness of the proposed operational strategy and control method.

AB - This paper proposes a DC microgrid operational strategy and control method for improved service reliability. The objective is to supply power to as many non-critical loads as possible, while providing an uninterrupted power supply to critical loads. The DC bus signaling method, in which DC voltage is an information carrier, is employed to implement the operational strategy in a decentralized manner. During grid-connected operation, a grid-tied converter balances the power of the microgrid by controlling the DC voltage. All loads are connected to the microgrid, and operate normally. During islanded operation, distributed generators (DGs), a backup generator, or an energy storage system balances the power. However, some non-critical loads may be disconnected from the microgrid to ensure the uninterrupted power supply to critical loads. For enhanced service reliability, disconnected loads can be automatically reconnected if certain conditions are satisfied. Control rules are proposed for all devices, and detailed microgrid operational modes and transition conditions are then discussed. Additionally, methods to determine control parameter settings are proposed. PSCAD/EMTDC simulation results demonstrate the performance and effectiveness of the proposed operational strategy and control method.

KW - Autonomous operation

KW - DC bus signaling

KW - DC microgrid

KW - Decentralized operation

UR - http://www.scopus.com/inward/record.url?scp=84924148742&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84924148742&partnerID=8YFLogxK

U2 - 10.5370/JEET.2015.10.2.452

DO - 10.5370/JEET.2015.10.2.452

M3 - Article

AN - SCOPUS:84924148742

VL - 10

SP - 452

EP - 464

JO - Journal of Electrical Engineering and Technology

JF - Journal of Electrical Engineering and Technology

SN - 1975-0102

IS - 2

ER -