The analysis of communication architecture and control mode of wide area power systems control

Power systems get more unstable and insecure with more transmission congestion and smaller generation reserves. There is prospect of wide area control schemes meeting the challenge instead of traditional local ones. Communication network technologies, which have made a great stride during last decade, play an important role in the new schemes. Control systems based on wide area networks (WAN) are studied in this paper. Multi-agent concept is introduced to improve the control performance. A novel wide-area control system that utilizes phasor measurement unit (PMU), wide-area communication and multi-agent technology is presented. The distributed system architecture and multi-agent working mechanism are discussed in order to use phasor data and to realize optimal power system stability control.