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Hier finden Sie wissenschaftliche Publikationen aus den FraunhoferInstituten. Shortening quasistatic timeseries simulations for costbenefit analysis of low voltage network operation with photovoltaic feedin
 Rehtanz, Christian ; TU Dortmund, Institut für Energiesysteme, Energieeffizienz und Energiewirtschaft: Power and Energy Student Summit 2015. Tagungsband : Dortmund, 13. und 14. Januar 2015; PESS Dortmund 2015 Dortmund: Technische Universität Dortmund, 2015 Paper S01.1, 6 S. 
 Power and Energy Student Summit (PESS) <2015, Dortmund> 

 Englisch 
 Konferenzbeitrag 
 Fraunhofer IWES () 
Abstract
Executing quasistatic timeseries simulations is time consuming, especially when yearly simulations are required, for example, for costbenefit analyses of grid operation strategies. Often only aggregated simulations outputs are relevant to grid planners for assessing grid operation costs. Among them are total network losses and power exchange through MV/LV substation transformers. In this context it can be beneficial to explore alternatives to running quasistatic timeseries simulations with complete input data that can produce the results of interest with high accuracy but in less time. This paper explores two methods for shortening quasistatic timeseries simulations through reducing the amount of input data and thus the required number of power flow calculations; one is based on downsampling and the other on vector quantization. The results show that execution time reductions and sufficiently accurate results can be obtained with both methods, but vector quantization requires considerably less data to produce the same level of accuracy as downsampling. In particular, when the simulations consider voltage control or when more than one simulation with the same input data is required, vector quantization delivers a far superior tradeoff between data reduction, time savings, and accuracy. However, the method does not reproduce peak values in the results accurately. This makes it less precise, for example, for detecting voltage violations.