Protection Principles for Future Microgrids

Author

Laaksonen, Hannu Jaakko

Author_Institution

Dept. of Electr. Eng. & Autom., Univ. of Vaasa, Vaasa, Finland

Volume

25

Issue

12

fYear

2010

Firstpage

2910

Lastpage

2918

Abstract

Realization of future low-voltage (LV) microgrids requires that all technical issues, such as power and energy balance, power quality and protection, are solved. One of the most crucial one is the protection of LV microgrid during normal and island operation. In this paper, protection issues of LV microgrids are presented and extensions to the novel LV-microgrid-protection concept has been developed based on simulations with PSCAD simulation software. Essential in the future-protection concept for LV microgrids will be the utilization of high speed, standard, e.g., IEC-61850-based communication to achieve fast, selective, and reliable operation protection.

Keywords

power grids; power supply quality; power system CAD; power system protection; IEC-61850-based communication; LV microgrid protection; PSCAD simulation software; energy balance; island operation; low-voltage microgrids; normal operation; power balance; power protection; power quality; Converters; Density estimation robust algorithm; Energy storage; Fault currents; IEC standards; Intelligent networks; Intelligent systems; Low voltage; Power quality; Power system stability; Protection; Relays; Smart grids; Voltage measurement; Distributed generation (DG); energy storage; islanding; low voltage (LV); microgrid; protection; smart grids;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2010.2066990

Filename

5549919