TY - JOUR
AU - Dashtdar, Majid
AB - Various algorithms have been introduced for differential protection of power transformers, each of which has its limitations. One of the causes of unwanted interruption in power transformers is its magnetizing inrush current. This current causes the differential relay to misdiagnose the internal fault of the transformer and leads to an incorrect cutoff command. In this paper, fuzzy systems are used to improve the differential protection of the transformer and to stabilize it against magnetizing inrush current. The basis of the proposed algorithm is that if the cutoff command is sent by the differential relay, by applying Clarke transform to the differential current and using fuzzy logic, the decision to send the cutoff command to the protection relays is made. The proposed algorithm is applied to a sample of the substation transformers model in Iran. The network is simulated in PSCAD/EMTDC software and the output of the simulation is transferred to MATLAB software to apply the proposed algorithm. The simulation results show the efficiency of the proposed algorithm in improving the differential relay.
TI - Improving the Differential Protection of Power Transformers Based on Clarke Transform and Fuzzy Systems
JF - "Journal of Control, Automation and Electrical Systems"
DO - 10.1007/s40313-021-00814-w
DA - 2022-04-01
UR - https://www.deepdyve.com/lp/springer-journals/improving-the-differential-protection-of-power-transformers-based-on-g0aiRrr1Q6
SP - 610
EP - 624
VL - 33
IS - 2
DP - DeepDyve
ER -