1. Distinguished Talk Prof. Reza Iravani, Editor-in-Chief (IEEE Trans. Power Delivery) IEEE Fellow Dept. of ECE, University of Toronto On November 30, 2010 National Taiwan University of Science and Technology Contact information : ryanlian@mail.ntust.edu.tw 02-27303601 連國龍老師ryanlian@mail.ntust.edu.tw Speech: 14:30~15:30 (TR214) Control Strategies for the Next Generation Microgrids and Distributed Energy Resources The conventional power system is in transition to the next generation system which is anticipated of being capable for delivering optimal electric power based on advanced control strategies, Information and communication Technologies (ICTs)s, pervasive use of sensors, and improved components and power electronic interfaces. Simultaneously, the power system will need to:  Operate under more stringent operational conditions  Operate closer to the constraints  Provide higher degree of utilization of the infrastructure These requirements may drive the power system to be more prone to violation of the operational limits and even instability. This problem is exacerbated in a small scale power system, e.g., a microgrid or an active distribution system, in which resources such as power generation capacity are relatively limited. In these systems, due to relatively frequent changes in the in-service status of components, a controller designed and tuned for one (or a set of) system configuration may not perform satisfactorily for another configuration. Thus, effective and fast mitigation of transients, especially when the operating point is close to the limits, is of more significance. This presentation focuses on two control philosophies to address this problem:  A hierarchical framework for the microgrid control to devise intermediate set points subsequent to a major change or disturbance.  A distributed control strategy for transient response shaping of the controllable devices of the microgrid using local measurements. The proposed control strategy and their performance are discussed and evaluated, and their technical feasibility is established using a number of case studies. Sponsor : Dept. of Electrical Eng., NTUST Co-sponsor : National Science Council, Taiwan Dr. Iravani received his B.Sc. degree in 1976 (Tehran, Iran) and until 1979 worked as a consultant for the power utility industry. In 1979 he joined the University of Manitoba, Canada, as a graduate student where he received his M.Sc. (1981) and Ph.D. (1985) degrees in electrical engineering. Currently he is a professor in the ECE department at the University of Toronto. Dr. Iravani is the founder and coordinator of the Centre for Applied Power Electronics (CAPE) at the University of Toronto through which he leads R&D activities of a group of 25 research engineers, graduate students, and post- doctoral fellows. Under the umbrella of CAPE, Dr. Iravani has led the research, development and demonstration of high-precision power supplies (up to 2 megawatts), wind power conversion systems (up to 3 megawatts), the utility grade battery systems (1.5 megawatts), and integration of power electronic devices in power systems. His research includes:  Wind power and PV solar power units and power plants  Grid integration of distributed energy resources  High-Voltage Direct-Current (HVDC) stations and grids Dr. Iravani is a Fellow of the IEEE, the Editor-in-Chief of the IEEE Transactions on Power Delivery, and a Professional Engineer in the Province of Ontario, Canada.