1. Projektübersicht
This supermarket was built many years ago, und harmonische Probleme wurden in der Konfiguration des Stromversorgungssystems nicht berücksichtigt. When designing the power distribution system, Der Durchmesser des N-Phasenkabels war kleiner als der des A/B/C-Dreiphasenkabels.
The building is divided into three floors. The first floor is a supermarket, and the second and third floors are clothing stores. In the first floor’s power distribution circuit, serious N-phase heating, and excessive current problems occurred.
2. Verteilungssystemdiagramm und harmonische Hauptlasten
Es gibt 4 load outlet cabinets in the power distribution room, among which the power consumption of the supermarket on the first floor is led out from the 3# Und 4# Feederschränke.
In the power distribution structure, the power upstream of the 3# Und 4# Feeder -Schränke sind ein Dual -Power -Schalter, and this switch is a 4P switch.
The typical harmonic source at this site is an LED indicator light
The first symptom of the problem discovered at the site was the heating problem of the N-phase shell of the dual power switch.
3. Harmonic data testing and analysis
After selecting the on-site transformer, we conducted a test at the incoming cabinet location to gain an overall understanding of the on-site power quality issues.
4. Harmonische Lösung
On-site improvement needs include resolving the overheating of the N-phase cables and switches in the first-floor supermarket. As the main harmonic source equipment is located in the first-floor supermarket, targeted measures are chosen to address the harmonic issues in the 3# Und 4# feeder cabinets to reduce the N-phase current at the dual power switch positions and resolve the overheating issue in this N-phase location.
Auswahl der Ausrüstung: Aktiver Leistungsfilter (APF)
Ausrüstungsmodell: Coepo APF/200-0.4-D
Management method: Lokale Behandlung
Installationskapazität: 200A
Installationsmethode: Racktyp
Installationsort: power distribution room
5. Wirkung
After harmonic improvement by active power filter:
1. Die Stromwellenform des Systems wurde erheblich verbessert, Von der ursprünglichen verzerrten Wellenform zu einer normalen Sinuswellenwellenform;
2. The N-phase current dropped from the 251.4A to 17.2A. The N-phase current dropped significantly, so the N-phase cable heating problem is solved;
3. The system’s total harmonic distortion rate dropped from 47.2% Zu 4.6%, und der harmonische Kontrolleffekt war signifikant.
Tags: Power system configuration, Harmonische Lösung, Aktiver Leistungsfilter (APF), Coepo APF/200-0.4-D, 200Ein APF, Active Power Filter vom Rack Type Type, Lieferanten, Hersteller, Fabrik, Großhandel, kaufen, Preis, Zitat, Schüttgut, zu verkaufen, Unternehmen, Aktie, kosten.
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