Title :
Adaptive Protection System for Microgrids: Protection practices of a functional microgrid system.
Author :
Liang Che ; Khodayar, Mohammad E. ; Shahidehpour, Mohammad
Author_Institution :
Electr. & Comput. Eng. Dept., Illinois Inst. of Technol., Chicago, IL, USA
Abstract :
Distributed energy resources (DERs) offer on-site generation at consumption points, which are expected to change the conventional concept of central power generation. DER integration reduces transmission losses and enhances the operation reliability of distribution systems. However, distribution systems are traditionally designed as passive networks in which large DER penetrations representing bidirectional power flows and topology-dependent fault currents could affect protection devices, cause danger to the maintenance personnel, and result in uncontrollable under-/overvoltage and frequency. IEEE Standard 1547 requires DER units to stop energizing the distribution system when the system is de-energized due to faults.
Keywords :
distributed power generation; fault currents; power distribution protection; power distribution reliability; DER integration; DER penetrations; DER units; IEEE Standard 1547; adaptive protection system; bidirectional power flows; central power generation; consumption points; distributed energy resources; distribution systems operation reliability; microgrids; onsite generation; overvoltage; passive networks; protection devices; topology-dependent fault currents; transmission losses; underoltage; Energy resources; Fault currents; Microgrids; Network topology; Power consumption; Power distribution planning; Power grids; Relays; Substations; Switches;
Journal_Title :
Electrification Magazine, IEEE
DOI :
10.1109/MELE.2013.2297031