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Beijing Beichen Times Tower

Active Harmonic Filter for Commercial Building Industry

Beijing Beichen Times Tower
Active Harmonic Filter for Commercial Building Industry

Beijing Beichen Building

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

Beichen Active Power Filter Project Onsite 3
Beichen Active Power Filter Project Onsite 2
Beichen Active Power Filter Project Onsite 1

        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

Beichen Active Power Filter Project Before Mitigation

THDi Before Mitigation 54.3%

Beichen Active Power Filter Project After Mitigation

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.