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Hassan Bevrani

Hassan Bevrani

Academic rank: Professor
Education: PhD.
ScopusId: 55913436700
Faculty: Faculty of Engineering
Address: Dept. Of Electrical and Computer Eng, University of Kurdistan, Allameh Hamdi Blvd, Sanandaj PO Box 416, P. C: 66177-15175, Kurdistan, Iran
Phone: +98-87-33624001


A PMU-based back-up protection scheme for fault detection considering uncertainties
Fault detectionPower swingphasor measurement unit (PMU)Stressed conditionWide-area monitoring
Journal International Journal of Electrical Power & Energy Systems
Researchers Hêmin Golpîra ، Hassan Bevrani ، Sirwan Shazdeh


In this paper, a supervisory PMU-based protection scheme is proposed to prevent mis-operation of conventional protection systems against stress conditions at the transmission level. According to the proposed method, a vulnerable area in power systems is identified using the buses, equipped PMU, with the highest distortion in voltage magnitude following an event. For a suitable implementation of the PMU-based proposed scheme, an analytical strategy is employed to optimize the installed PMUs number in the power system regarding the protection approach. Then, equivalent admittances between every two PMU-buses, surrounding the specified area, are calculated and analyzed as the key indices for fault detection. The equivalent admittance, emulating the transmission line behavior, is a function of the voltage and current of the monitored buses, and hence could be used to accurately detect the occurrence of a fault. Besides, a load-flow-based scheme is proposed for accurate fault distinction from load-increasing events. Afterwards, the impact of measurement errors on the proposed method performance is analyzed using the sensitivity analysis approach. Verification of the proposed method has been evaluated on a two-area power system and a IEEE 73-bus benchmark in the Simulink/MATLAB environment.