Protection of microgrid with high amounts of renewables: challenges and solutions

Research output: Contribution to conferencePaper

Abstract

Microgrid is a small-scale network including generators, loads and storage system, which provides a friendly way for the penetration of renewables and releases the burden of transmission system arising from the increased energy demand. Moreover, since microgrid can operate in islanded mode, it can provide backup power to local consumers when the main grid is disconnected. However, the utilization of microgrid causes serious problems in the area of power system protection. The main issues comprise varied fault levels in different operating modes and fault detection in islanded microgrid particularly when the microgrid is dominated by inverter based DGs (IIDGs). In addition, to avoid non-necessary power losses raised from multi-stage power conversion of DC loads and generators, DC microgrid becomes another attractive choice, which further increases the difficult on designing protection system for the futuristic microgrid. In this paper, a comprehensive review of the existing issues and protection methods for AC and DC microgrids is presented. Furthermore, to facilitate better understanding to readers, the benefits and limitations of each method are discussed in depth. Potential protection tools for future microgrid are suggested at the end of this paper.

Conference

ConferenceUPEC 2019 - 54th International Universities Power Engineering Conference
CountryRomania
CityBucharest
Period3/09/196/09/19

Fingerprint

DC generators
Complex networks
Fault detection

Keywords

  • microgrid (MG)
  • distributed generation
  • protection scheme design

Cite this

Liu, D., Tzelepis, D., & Dysko, A. (2019). Protection of microgrid with high amounts of renewables: challenges and solutions. Paper presented at UPEC 2019 - 54th International Universities Power Engineering Conference, Bucharest, Romania.
Liu, Di ; Tzelepis, Dimitrios ; Dysko, Adam. / Protection of microgrid with high amounts of renewables : challenges and solutions. Paper presented at UPEC 2019 - 54th International Universities Power Engineering Conference, Bucharest, Romania.6 p.
@conference{1fbfab34f466479da5ebf3e2938dbcdf,
title = "Protection of microgrid with high amounts of renewables: challenges and solutions",
abstract = "Microgrid is a small-scale network including generators, loads and storage system, which provides a friendly way for the penetration of renewables and releases the burden of transmission system arising from the increased energy demand. Moreover, since microgrid can operate in islanded mode, it can provide backup power to local consumers when the main grid is disconnected. However, the utilization of microgrid causes serious problems in the area of power system protection. The main issues comprise varied fault levels in different operating modes and fault detection in islanded microgrid particularly when the microgrid is dominated by inverter based DGs (IIDGs). In addition, to avoid non-necessary power losses raised from multi-stage power conversion of DC loads and generators, DC microgrid becomes another attractive choice, which further increases the difficult on designing protection system for the futuristic microgrid. In this paper, a comprehensive review of the existing issues and protection methods for AC and DC microgrids is presented. Furthermore, to facilitate better understanding to readers, the benefits and limitations of each method are discussed in depth. Potential protection tools for future microgrid are suggested at the end of this paper.",
keywords = "microgrid (MG), distributed generation, protection scheme design",
author = "Di Liu and Dimitrios Tzelepis and Adam Dysko",
year = "2019",
month = "9",
day = "3",
language = "English",
note = "UPEC 2019 - 54th International Universities Power Engineering Conference ; Conference date: 03-09-2019 Through 06-09-2019",

}

Liu, D, Tzelepis, D & Dysko, A 2019, 'Protection of microgrid with high amounts of renewables: challenges and solutions' Paper presented at UPEC 2019 - 54th International Universities Power Engineering Conference, Bucharest, Romania, 3/09/19 - 6/09/19, .

Protection of microgrid with high amounts of renewables : challenges and solutions. / Liu, Di; Tzelepis, Dimitrios; Dysko, Adam.

2019. Paper presented at UPEC 2019 - 54th International Universities Power Engineering Conference, Bucharest, Romania.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Protection of microgrid with high amounts of renewables

T2 - challenges and solutions

AU - Liu, Di

AU - Tzelepis, Dimitrios

AU - Dysko, Adam

PY - 2019/9/3

Y1 - 2019/9/3

N2 - Microgrid is a small-scale network including generators, loads and storage system, which provides a friendly way for the penetration of renewables and releases the burden of transmission system arising from the increased energy demand. Moreover, since microgrid can operate in islanded mode, it can provide backup power to local consumers when the main grid is disconnected. However, the utilization of microgrid causes serious problems in the area of power system protection. The main issues comprise varied fault levels in different operating modes and fault detection in islanded microgrid particularly when the microgrid is dominated by inverter based DGs (IIDGs). In addition, to avoid non-necessary power losses raised from multi-stage power conversion of DC loads and generators, DC microgrid becomes another attractive choice, which further increases the difficult on designing protection system for the futuristic microgrid. In this paper, a comprehensive review of the existing issues and protection methods for AC and DC microgrids is presented. Furthermore, to facilitate better understanding to readers, the benefits and limitations of each method are discussed in depth. Potential protection tools for future microgrid are suggested at the end of this paper.

AB - Microgrid is a small-scale network including generators, loads and storage system, which provides a friendly way for the penetration of renewables and releases the burden of transmission system arising from the increased energy demand. Moreover, since microgrid can operate in islanded mode, it can provide backup power to local consumers when the main grid is disconnected. However, the utilization of microgrid causes serious problems in the area of power system protection. The main issues comprise varied fault levels in different operating modes and fault detection in islanded microgrid particularly when the microgrid is dominated by inverter based DGs (IIDGs). In addition, to avoid non-necessary power losses raised from multi-stage power conversion of DC loads and generators, DC microgrid becomes another attractive choice, which further increases the difficult on designing protection system for the futuristic microgrid. In this paper, a comprehensive review of the existing issues and protection methods for AC and DC microgrids is presented. Furthermore, to facilitate better understanding to readers, the benefits and limitations of each method are discussed in depth. Potential protection tools for future microgrid are suggested at the end of this paper.

KW - microgrid (MG)

KW - distributed generation

KW - protection scheme design

M3 - Paper

ER -

Liu D, Tzelepis D, Dysko A. Protection of microgrid with high amounts of renewables: challenges and solutions. 2019. Paper presented at UPEC 2019 - 54th International Universities Power Engineering Conference, Bucharest, Romania.