TY - GEN
T1 - A novel protection coordination strategy using back tracking algorithm for distribution systems with high penetration of DG
AU - Zayandehroodi, Hadi
AU - Mohamed, Azah
AU - Shareef, Hussain
AU - Mohammadjafari, Marjan
AU - Farhoodnea, Masoud
PY - 2012
Y1 - 2012
N2 - Power distribution systems are conventionally designed as radial systems fed from a main source. However, when a distributed generation (DG) unit is connected to the system, the network is no longer radial. The presence of DG may affect existing protective relaying, especially overcurrent relays although DG has significant economic and environmental benefits. This paper proposed a novel protection strategy for coordinating the protection relays in power distribution system with high penetration of DG units. The proposed strategy coordinates the open/close states of the overcurrent relays by using the backtracking algorithm to determine the downstream and upstream paths leading to DG units. Initially, the faulty line is identified and the main protection algorithm determines the open/close states of relays so as to isolate the faulty line. In addition, a backup protection algorithm is considered to complete the protection coordination scheme in case of malfunction relays. Several case studies are considered to verify the accuracy of the proposed protection coordination method. The results verified that the proposed protection strategy is able to accurately coordinate the relays in a power distribution system with DG units.
AB - Power distribution systems are conventionally designed as radial systems fed from a main source. However, when a distributed generation (DG) unit is connected to the system, the network is no longer radial. The presence of DG may affect existing protective relaying, especially overcurrent relays although DG has significant economic and environmental benefits. This paper proposed a novel protection strategy for coordinating the protection relays in power distribution system with high penetration of DG units. The proposed strategy coordinates the open/close states of the overcurrent relays by using the backtracking algorithm to determine the downstream and upstream paths leading to DG units. Initially, the faulty line is identified and the main protection algorithm determines the open/close states of relays so as to isolate the faulty line. In addition, a backup protection algorithm is considered to complete the protection coordination scheme in case of malfunction relays. Several case studies are considered to verify the accuracy of the proposed protection coordination method. The results verified that the proposed protection strategy is able to accurately coordinate the relays in a power distribution system with DG units.
KW - Backtracking Algorithm
KW - Distributed Generation (DG)
KW - Distribution Network
KW - Overcurrent Relay Coordination
KW - Protection
UR - http://www.scopus.com/inward/record.url?scp=84864986229&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84864986229&partnerID=8YFLogxK
U2 - 10.1109/PEOCO.2012.6230858
DO - 10.1109/PEOCO.2012.6230858
M3 - Conference contribution
AN - SCOPUS:84864986229
SN - 9781467306614
T3 - 2012 IEEE International Power Engineering and Optimization Conference, PEOCO 2012 - Conference Proceedings
SP - 187
EP - 192
BT - 2012 IEEE International Power Engineering and Optimization Conference, PEOCO 2012 - Conference Proceedings
T2 - 2012 IEEE International Power Engineering and Optimization Conference, PEOCO 2012
Y2 - 6 June 2012 through 7 June 2012
ER -