Title :
Islanding protection of distribution systems with distributed generators — A comprehensive survey report
Author :
Chowdhury, S.P. ; Chowdhury, S. ; Ten, Chui Fen ; Crossley, P.A.
Author_Institution :
Electr. Eng. Dept., Jadavpur Univ., Kolkata
Abstract :
Anti-islanding protection schemes currently enforce the DGs to disconnect immediately for grid faults through loss of grid (LOG) protection system. This greatly reduces the benefits of DG deployment. For preventing disconnection of DGs during LOG, several islanding protection schemes are being developed. Their main objectives are to detect LOG and disconnect the DGs from the utility. This allows the DGs to operate as power islands suitable for maintaining uninterruptible power supply to critical loads. A major challenge for the islanding protection schemes is the protection co-ordination of distribution systems with bi-directional fault current flows. This is unlike the conventional overcurrent protection for radial systems with unidirectional fault current flow. This paper presents a comprehensive survey of various islanding protection schemes that are being developed, tested and validated through extensive research activities across the globe.
Keywords :
distributed power generation; power distribution faults; power distribution protection; power measurement; uninterruptible power supplies; bidirectional fault current flows; distributed generators; distribution systems; grid faults; islanding protection; loss of grid protection system; uninterruptible power supply; Control systems; Distributed control; Fault currents; Power generation; Power quality; Power system protection; Power system reliability; Testing; Voltage; Wind energy generation; Digital Protection; Distributed Generation; Islanding Protection; Loss of grid; Protection Coordination;
Conference_Titel :
Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century, 2008 IEEE
Conference_Location :
Pittsburgh, PA
Print_ISBN :
978-1-4244-1905-0
Electronic_ISBN :
1932-5517
DOI :
10.1109/PES.2008.4596787