An Improved Algorithm for a High Speed Distance Relay Using Walsh Functions.

Authors

Gabr Abdel-Sallam, Assistant Professor, Electrical Power & Machines Department, Faculty of Engineering, Mansoura University, Mansoura, Egypt.
Fayez Areed, Assistant Professor, Electrical Power & Machines Department, Faculty of Engineering, Mansoura University, Mansoura, Egypt.

Corresponding Author

Abdel-Sallam, Gabr

Subject Area

Electrical Engineering

Article Type

Original Study

Abstract

An algorithm for calculating the apparent transmission line impedance to the point of fault is presented. This algorithm is based on a half-cycle Window using walsh function technique. The real and the imaginary components of the fundamental frequency voltage and current of the faulty phases are evaluated and used to calculate the impedance, as seen from the relay location. The sampling rate used to test this algorithm is 16 samples/cycle. The algorithm has been tested using digital computer simulation of the sample model. A comparison between this algorithm and four other algorithms, suitable for fault impedance measurement was carried on here with particular reference to their accuracy and speed of calculations.

Recommended Citation

Abdel-Sallam, Gabr and Areed, Fayez (2021) "An Improved Algorithm for a High Speed Distance Relay Using Walsh Functions.," Mansoura Engineering Journal: Vol. 8 : Iss. 1 , Article 9.
Available at: https://doi.org/10.21608/bfemu.2021.180245