Application of intelligent systems to monitoring and control of MTDC-AC systems

The Multi-terminal DC transmission system (MTDC) offers flexibility in operation, increases the overall efficiency of power transmission and significantly improves the AC system performance. With the advancement of powerful computers and a number of new concepts such as artificial intelligence, it is possible to control and monitor MTDC-AC system with sine wave pulse width modulated converters and intelligent systems. This paper presents the development of such a system. Examples are used to illustrate the benefit gained in using such an approach as compared with the conventional PI controller.