Decentralized DES Supervisory Control for Coordination of ULTC and SVC
S. Mohammad Noorbakhsh, Ali A. Afzalian · Asian Journal of Control · 2011
Abstract This paper discusses the issues involved in modeling and synthesizing a discrete‐event supervisory control system in a decentralized structure to coordinate the behavior of an under‐load tap‐changing transformer (ULTC) and a static VAR compensator (SVC) in electrical power systems. The control specifications are modeled as some automata, and it is shown that they are controllable. The designed closed‐loop control system is non‐blocking. The consistency of the high‐level model in a two‐level hierarchical control system is investigated. The proposed supervisory control is tested by inspecting its behavior in a simulated situation. Copyright © 2011 John Wiley and Sons Asia Pte Ltd and Chinese Automatic Control Society