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Beijing Beichen Times TowerActive Harmonic Filter for Commercial Building Industry
Beijing Beichen Times TowerActive Harmonic Filter for Commercial Building Industry
Project Introduction
Beijing Beichen Times Tower is a high-quality business complex combining Grade A office spaces and upscale shopping centers. The project has 12 transformers, with main loads including variable frequency air conditioning, elevators, and lighting, all of which can generate harmonics. Transformers No. 8 and No. 11 have higher loads and show significant harmonics in their compensation controllers. Following the owner’s suggestion, our harmonic testing confirmed a high level of harmonic content.
Analysis and Solution
Beijing Beichen Times Tower project has numerous energy-saving lighting devices, such as fluorescent lamps and showcase downlights, which use ballasts and primarily generate 3rd-order zero-sequence harmonics. Additionally, there are rectifier-type UPS systems, office equipment, variable frequency air conditioners, and elevators, which mainly produce 5th and 7th-order harmonics. The significant harmonic generation degrades power quality and affects the stable operation of distribution and production equipment.
The project uses our IKM-Active Harmonic Filter 400Amps, and the equipment is currently operating normally.
Performance
THDi Before Mitigation 54.3%
THDi After Mitigation 6.3%
After the equipment was installed, the harmonic current distortion rate was reduced from 54.3% to 6.3%. The harmonic mitigation effect is excellent, effectively eliminating harmonic currents in the distribution system, improving power quality, reducing line losses, and ensuring the stable operation of distribution and production equipment.