DTC Seminar Series
Automatic Control Laboratory
KTH Royal Institute of Technology
Tuesday, November 19, 2013
2:00 p.m. reception
2:30 p.m. seminar
401/402 Walter Library
Power networks are examples of large-scale critical infrastructures where secure operation is an absolute necessity. Power networks are routinely managed over supervisory control and data acquisition (SCADA) systems. Today, few of the control loops that are closed over the SCADA system are automatic. Instead most loops are managed by a human operator, who sends out commands to circuit breakers, for example. For the operator to obtain a state of awareness and to provide decision support, the SCADA systems often include energy management systems (EMS), which feature applications such as state estimators (SE), bad data detection (BDD), and automatic generation control (AGC). In this tutorial lecture, we will present recent work on cyber-security analysis of some of these applications. In particular, we will discuss cyber-attacks and defense in the SE and AGC systems. We will also discuss cyber-secure control and monitoring which involves phasor measurement units (PMUs) and dynamical models. Such systems are believed to become integral parts in future Smart Grids, and their secure and stable operation will be of utmost importance.
Henrik Sandberg received the M.Sc. degree in engineering physics and the Ph.D. degree in automatic control from Lund University, Lund, Sweden, in 1999 and 2004, respectively. He is an Associate Professor with the Automatic Control Laboratory, KTH Royal Institute of Technology, Stockholm, Sweden. From 2005 to 2007, he was a Post-Doctoral Scholar with the California Institute of Technology, Pasadena, USA. He has held visiting appointments with the Australian National University and the University of Melbourne, Australia. In 2013, he is a visiting scholar at the Laboratory for Information and Decision Systems (LIDS) at MIT, Cambridge, USA. His current research interests include secure networked control, power systems, model reduction, and fundamental limitations in control. Dr. Sandberg was a recipient of the Best Student Paper Award from the IEEE Conference on Decision and Control in 2004 and an Ingvar Carlsson Award from the Swedish Foundation for Strategic Research in 2007. He is currently an Associate Editor of the IFAC Journal Automatica.