ADF Erhöht Water Treatment Plant Output von 30% (Comsys AB)

The water treatment process features numerous variable-speed pumps to process large amounts of fluids. By optimizing the electrical behavior of pumps controlled by variable frequency drives (VFD) mit Comsys ADF Active Harmonic Filter Technologie, GRYAAB increased the maximum output capacity of these systems by 30%.

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“Dank ADF können wir nun verarbeiten 30% mehr Flüssigkeit in Zeiten der Spitzennachfrage. We also save energy.”
– Roger Rosenqvist, Project Manager

Hintergrund

GRYAAB is the sewage works of the Gothenburg region in Sweden and its treatment plant Ryaverket os among the largest in all of Scandinavia. Central to saving the environment from pollution, die zwei grundlegenden Anforderungen an diese kritischen regionalen Infrastruktur sind ständig in Betrieb und ausreichende Behandlungskapazitäten. USV-Backup-Systeme sind entscheidend für eine sichere und stabile Stromversorgung zu gewährleisten.

Wann 17 new VFD-controlled pumps were installed at Ryaverket to increase plant capacity, harmonic distortion on the electrical system rose significantly. The resulting overcurrents caused the UPS fuses to melt. This was avoided by running the pumps at reduced speed. This was however a temporary solution since this reduced treatment capacity below demand. Frequenzumrichter sind eine bekannte Quelle von potenziell schädlichen Oberwellen.

Die wichtigsten Vorteile | Pump drives:

  • 30% increased plant output
  • Secured UPS performance provides for reliable production
  • Harmonic distortion below threshold values
  • Reduced energy consumption

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Challenge – eliminating the harmonics

After consulting Ångpanneföreningen (ÅF), a premier Swedish consulting firm, Ryaverket announced a public procurement process seeking the implementation of active harmonic elimination technology. Das Ziel war die volle Verarbeitungskapazität durch die Beseitigung der Oberwellen abrufen. Comsys won the procurement in competition with several renowned companies.

Solution – ADF Active Filter units

Das Ergebnis war der Einbau zweier 600 kVA Comsys ADF Active Filter Einheiten, zwei Transformatoren liefern verwalten 2160 kVA. Es gab eine Anzahl von Eigenschaften der Comsys ADF solution that led to Ryaverket’s choice:

  • Flexible Anschluss-und Anlagendimensionierung
  • Reduzierte Wartungskosten an anderen angeschlossenen Geräten
  • Störungsfreie elektrische Umgebung
  • Reduzierter Energieverbrauch durch verminderte Transformatorverluste

Result – harmonics elimination

The harmonics elimination resulted in an increased max output capacity of 30%.
Weiter, GRYAAB now manages to operate below the threshold value for harmonic distortion (SS 421 1811). The reduced energy consumption and improved environmental performance are welcomed additional benefits.
Comsys AB • Ideon Science Park • SE-223 70 LUND • Sweden
So: +46 46 286 35 00 • Fax: +46 46 286 35 05
E-Mail-:info@comsys.se