Scheduled System Maintenance:
Some services will be unavailable Sunday, March 29th through Monday, March 30th. We apologize for the inconvenience.
By Topic

Zonal overcurrent protection for smart radial distribution systems with distributed generation

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Ituzaro, F.A. ; Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA ; Douglin, R.H. ; Butler-Purry, K.L.

In a smart radial distribution grid (RDS), distributed generators (DGs) will be more prominent. The addition of the DGs changes the topology of RDS, causes bidirectional power flows and contributes to fault current levels. This may result in unwanted tripping of existing overcurrent (OC) protection devices and in permanent outage of a large number of customers. The increased penetration of DGs requires a smarter protection that considers all the network flows while optimizing the system assets. This paper presents an approach that modified an existing overcurrent protection scheme to reduce the number of customers' affected by faults in RDS with DGs. The modified approach involves predefining protection zones in RDS and installing directional OC relays and circuit breakers at the zonal boundaries. Zonal boundary relays determine faulted zones by sharing information on the direction of their detected fault current using binary bit signals over a radio frequency communication medium. The approach was verified through simulations using EMTP™/PSCAD®. Results from simulations showed the selective identification and isolation of faulted zones while allowing some of the DGs to continue to supply the unfaulted parts of the system.

Published in:

Innovative Smart Grid Technologies (ISGT), 2013 IEEE PES

Date of Conference:

24-27 Feb. 2013