NachhaltigEuropan Campus Rottal-Inn
Beitrag (Sammelband oder Tagungsband)
H. Mangesius, S. Hirche, Matthias Huber, T. Hamacher
A framework to quantify technical flexibility in power systems based on reliability certificates
2013 4th IEEE/PES Innovative Smart Grid Technologies Europe (ISGT EUROPE)
Power systems are increasingly stressed by variable and unpredictable generation from various sources. We identify the qualitative framework of flexibility as an adequate tool to specify requirements that allow the system to handle this variability. An open problem is the quantification of technical flexibility that incorporates limitations from transmission system and component behavior in contrast to existing copper plate supply and demand balance approaches. We develop such a quantitative method for single components on the basis of a priori specified reliability criteria. Our framework bases on a combined static power flow and small signal stability analysis. In a perturbative approach we derive sensitivity-based formula for eigenvalue variations under nonlinear changes of steady power flow set points. To this end, we define rigorously the terms flexibility metric and technical flexibility of single components. We provide an algorithmic procedure for computation of tolerance ranges of individual system components such that the overall behavior remains reliable.
GesundEuropan Campus Rottal-Inn
T. Lorenz, Vlaskamp, B. N. S., Anna-Maria Kasparbauer, A. Mörtl, S. Hirche
Dyadic Movement Synchronization While Performing Incongruent Trajectories Requires Mutual Adaptation
Frontiers in Human Neuroscience, no. June
Unintentional movement synchronization is often emerging between interacting humans. In the present study, we investigate the extent to which the incongruence of movement trajectories has an influence on unintentional dyadic movement synchronization. During a target-directed tapping task, a participant repetitively moved between two targets in front of another participant who performed the same task in parallel but independently. When the movement path of one participant was changed by placing an obstacle between the targets, the degree of their unintentional movement synchronization was measured. Movement synchronization was observed despite of their substantially different movement trajectories. A deeper investigation of the participant's unintentional behavior shows, that although the actor who cleared the obstacle puts unintentional effort in establishing synchrony by increasing movement velocity—the other actor also unintentionally adjusted his/her behavior by increasing dwell times. Results are discussed in the light of joint action, movement interference and obstacle avoidance behavior.