The Max Planck Institute Magdeburg invites you to its series of colloquia.
Top-class scientists, from notable German and worldwide research institutions, give a survey of their research work. Everybody who is interested, is invited to attend.
The collective dynamics of networks fundamentally underlies the function of a wide range of infrastructure systems around us, ranging from communication and traffic networks to power grids and other supply networks. Yet collective dynamical network phenomena are far from fully understood today. In this talk, I will offer an introduction to the challenges of the rapidly developing field of Network Dynamics. I will highlight three collective dynamical phenomena that emerge across networked systems and that have particular relevance to power grids: (i) Braess' paradox in oscillatory systems, explaining how adding links may remove previously existing operating states through 'geometric frustration' , (ii) nonlocal flow rerouting [2,3], the finding that an infrastructure might be systemically relevant although local measures indicate the opposite; and iii) anomalous fluctuations  and their spreading , asking how local changes dynamically impact networks in a distributed yet often characteristic way. We discuss consequences of our findings for the design and operation of future-compliant power grids. This is work with Debsankha Manik, Benjamin Schaefer, Dirk Witthaut, Xiaozhu Zhang and others.
 D. Witthaut & M. Timme, New J. Phys. 14:083036 (2012).