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SUMMARY:Embracing Low Inertia for Power System Frequency Control: A Dynami
 c Droop Approach - Enrique Mallada (Johns Hopkins University)
DTSTART:20190502T123000Z
DTEND:20190502T133000Z
UID:TALK123595@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:Co-Authors: Yan Jiang\, Richard Pates\, and Fernando Paganini<
 br> <br> Abstract: The transition into renewable energy sources -with limi
 ted or no inertia- is seen as potentially threatening to classical methods
  for achieving grid synchronization. A widely embraced approach to mitigat
 e this problem is to mimic inertial response using grid-connected inverter
 s. That is\, introduce virtual inertia to restore the stiffness that the s
 ystem used to enjoy. In this talk\, we seek to challenge this approach and
  advocate towards taking advantage of the system&rsquo\;s low inertia to r
 estore frequency steady state without incurring in excessive control effor
 ts. With this aim in mind\, we develop an analysis and design framework fo
 r inverter-based frequency control. We define several performance metrics 
 of practical relevance for power engineers that contemplate system disturb
 ances and measurement noise\,  and systematically evaluate the performance
  of standard control strategies\, such as virtual inertia and droop contro
 l. Our analysis unveils the relatively limited role of inertia on improvin
 g performance as well as the inability of droop control to enhance perform
 ance without incurring in considerable steady-state control efforts. To so
 lve this problem\, we propose a novel dynamic droop control (iDroop) for g
 rid-connected inverters -exploiting classical lead/lag compensation from c
 ontrol theory- that can significantly outperform existing solutions with c
 omparable -and in many cases significantly smaller- control efforts.<br>
LOCATION:Seminar Room 1\, Newton Institute
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