Title :
Protection Principles for Future Microgrids
Author :
Laaksonen, Hannu Jaakko
Author_Institution :
Dept. of Electr. Eng. & Autom., Univ. of Vaasa, Vaasa, Finland
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;
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2010.2066990
