Projects per year
Abstract
Stable and secure operation of power systems becomes increasingly difficult when a large share of the power production is based on distributed and noncontrollable renewable energy sources. Realtime stability assessment is dependent on very fast computation of different properties of the grid operating state, and strict time constraints are difficult to adhere to as the complexity of the grid increases. Several suggested approaches for realtime stability assessment require Thevenin impedances to be determined for the observed system conditions. By combining matrix factorization, graph reduction, and parallelization, we develop an algorithm for computing Thevenin impedances an order of magnitude faster than previous approaches. We test the factorandsolve algorithm with data from several power grids of varying complexity, and we show how the algorithm allows realtime stability assessment of complex power grids at millisecond time scale.
Original language  English 

Title of host publication  2013 IEEE PES Innovative Smart Grid Technologies 
Publisher  IEEE 
Publication date  2013 
Pages  6497824 
ISBN (Print)  9781467348942 
DOIs  
Publication status  Published  2013 
Event  IEEE PES Innovative Smart Grid Technologies Conference  Washington, District of Columbia, United States Duration: 24 Feb 2013 → 27 Feb 2013 
Conference
Conference  IEEE PES Innovative Smart Grid Technologies Conference 

Country  United States 
City  Washington, District of Columbia 
Period  24/02/2013 → 27/02/2013 
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Projects
 1 Finished

SOSPO: Secure Operation of Sustainable Power Systems
Østergaard, J., Jóhannsson, H., Nielsen, A. H., GarciaValle, R., Yang, G., Lind, M., Blanke, M., Weckesser, J. T. G., Wittrock, M. L., Møller, J. G., Perez, A., Pedersen, A. S. & Zhang, X.
01/01/2012 → 31/03/2016
Project: Research
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