A Synchronized-Phasor-Measurements-Based Wide Area Protection Scheme for Transmission Lines

Mohamed A. Ebrahim *, Fady Wadie**, Mousa A. Abd-Allah ***
* Associate Professor, Faculty of Engineering at Shoubra, Benha University, Cairo, Egypt.
** Assistant Lecturer, Faculty of Engineering, Egyptian Russian University, Badr City, Egypt.
*** Professor, Faculty of Engineering at Shoubra, Benha University, Cairo, Egypt.
Periodicity:May - July'2018
DOI : https://doi.org/10.26634/jps.6.2.14850


As a result of the problems facing conventional back-up protection, wide area backup protection schemes had shown to be a great alternative. For this reason, a new fault detection scheme is presented in this paper as a part of a wide area backup protection. The scheme relies on the Loss of Synchronism of Buses Index (LSBI), which monitors the sent and received positive sequence power across each lines. The phasor measurement unit provides the positive sequence measurements which are used to calculate the positive sequence powers sent and received at the terminals of each line. The LSBI seeks to find the power consumed within each line by finding the difference between these powers. A predefined threshold value is set for every line in order to be compared for the LSBI of the line to reach decision whether there is a fault on this line or not. The proposed scheme was tested upon New-England NE 39-bus and Western System Coordinating Council (WSCC) 9-bus systems using MATLAB/Simulink software package. The scheme showed its ability to operate correctly even in critical cases such as voltage or current inversion. The proposed scheme proved to be reliable in operation and free of mathematical errors


Wide Area Back-up Protection, Transmission Lines, Phasor Measurement Units

How to Cite this Article?

Ebrahim, M. A., Wadie, F., and Abd-Allah, M.A. (2018). A wide-area based Fault detection scheme for series compensated transmission networks. i-manager’s Journal on Power Systems Engineering, 6(2), 1-11. https://doi.org/10.26634/jps.6.2.14850


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