Hochschule für bildende Künste

This paper investigates power quality (PQ) issues in the medium-voltage network at the Deutsches Elektronen-Synchrotron (DESY) in Hamburg, Germany. The study focuses on voltage disturbances, harmonic distortions, and flicker levels that affect sensitive research equipment. DESY currently defines the voltage quality using EN 506160 and refers to IEC 61000-3 for permissible network disturbances. Field measurements using advanced data acquisition tools revealed voltage dips, swells, and harmonics exceeding thresholds defined by IEC 61000-3 and IEEE 519. Flicker analysis indicated irregular voltage fluctuations due to dynamic load changes. Despite ongoing efforts aim to refine PQ management through updated guidelines in the DESY planning manual, the findings in this paper suggest that compliance with existing standards alone is insufficient for ensuring power stability in specialized research environments. This study provides key insights for developing proactive PQ solutions tailored to industrial facilities like DESY.