A. CHAGHI is Professor with LSPIE Research Laboratory, Faculty of
Technology, Department of Electrical Engineering at Batna University,
05000, Algeria. (Tel.: 00213-33-81.51.23; e-mail: az_chaghi@yahoo.fr).
One approach to studying the performance of advanced
protection schemes in the presence of SC is the use of real-
time digital simulators. Real-time digital simulation allows
actual relay hardware to be tested in a hardware-in-loop
arrangement with detailed dynamic models of the protected
power system. Distance protection systems are used in most
countries of the world for the protection of high voltage
transmission line due to their simple operating principal and
capability to work independently under most circumstances
[7], [8]. Nowadays numerical distance protection relay based
on microprocessor technology is widely used. Systems
engineering of electrical power has also been using this
technology for over twenty years old. The relay technology has
changed dramatically since the advent of microprocessors [8].
In this paper, the setting consideration for a MHO numerical
distance relay on a 220 kV transmission line is considered.