EFFECTS OF UNIFIED POWER FLOW CONTROLLER (UPFC) ON DISTANCE RELAY TRIPPING CHARACTERISTICS IN THE NORTH-CENTRAL NIGERIAN 330kV NETWORK. NIJOTECH [Internet]. 2015 Sep. 30 [cited 2026 Apr. 19];34(4):793-801. Available from: https://mail.nijotech.com/index.php/nijotech/article/view/1011