ANALYSIS OF DISTANCE PROTECTION RELAY IN PRESENCE OF STATIC SYNCHRONOUS COMPENSATOR (STATCOM)

Distance relay is most popular in protection of High Voltage and extra high voltage transmission lines science many decades. In this paper analysis of distance protection relay employing with STATCOM on transmission line is done by using the simulation. Also effect of static synchronous compensator (STATCOM) on the distance protection relay under normal and abnormal conditions is investigated. However traditional updating of transmission lines is difficult. To fulfill power demand on the system need to utilize existing power system with the help of flexible alternating current transmission system (FACTS), but this will affect the traditional protection scheme for transmission lines. Simulation result clearly shows the impact of STATCOM on distance protection scheme during fault conditions. A typical 400KV, 300KM long transmission line with 100MVA STATCOM in MATLAB/Simulink is studied.