Real-time supervision for STATCOM installations

This article discusses the implementation of an operational monitoring and fault diagnosis system (OMFDS) for a /spl plusmn/20 MVAr voltage-sourced STATCOM based on gate-turn-off thyristor (GTO). It well fulfills the purpose of real-time supervision, intelligent alarm handling, post-fault system analysis and gratifying man-machine interaction. The proposed system, with minor modification if needed, can also be applicable to other FACTS controllers or other power electronic devices.