Soomro A, Muhammad Ovais Raza, Muhammad Hammaduddin, Muhammad Saad Aslam, Abdul Moeed Saadat, Syed Muhammad Shakir, Syed Saad Amin. Numerical Relay Based 220 kV Transmission Line Backup Distance Protection at Pipri West Grid- A Case Study. UWJST [Internet]. 2019 Dec. 4 [cited 2024 Dec. 22];3:1-14. Available from: https://uwjst.org.pk/index.php/uwjst/article/view/27