PROJECT CASE
Guangda Electric Is A Professional Organization Dedicated To Solving Power Quality Problems Of Users
How to solve the problem of current harmonic distortion in the operation of chiller units?
Time：
2019-10-17
Customer Name: Guangzhou Panyu Suneng Heating and Cooling Equipment Co., Ltd. Harmonic Load: Precision Instruments Purchased Equipment: Equipment-Level Filter SSFGD Design a set of low-voltage equipment-level filter SSFGD for this chiller unit to improve power factor, filter out characteristic subharmonics, stabilize system voltage, enhance power quality, and ensure electrical safety.
Customer Name:Guangzhou Panyu Suneng Heating and Cooling Equipment Co., Ltd.
Harmonic Load:Precision Instruments
Purchased Equipment:Device-level filterSSFGD
Project Background
Guangzhou Panyu Suneng Heating and Cooling Equipment Co., Ltd. is a subsidiary of Jie Feng Group, mainly producing cold water (heat pump) units: modular air-cooled (heat pump) units, modular water-cooled (heat pump) units, conventional air-cooled units, conventional water-cooled units, oil-free magnetic levitation centrifugal chillers; constant temperature and humidity air conditioning units: precision constant temperature and humidity air conditioning units, ordinary industrial constant temperature and humidity air conditioning units, fan coil units, cabinet air conditioning units, unit air conditioning units, rooftop air conditioning units, combined air conditioning units, brazed plate heat exchangers.
Electricity Overview (Precision Instruments)
Guangzhou Panyu Suneng Heating and Cooling Equipment Co., Ltd. has 1 chiller unit, model MTWD120-MV7, with a rated power of 110kW, operating current of about 180A, total harmonic distortion of current at 50%, total harmonic distortion of voltage at 5.5% (exceeding the national standard limit of 5%), with the main harmonic frequency spectrum being the 5th and 7th harmonics.
Design Plan
Design a set of low voltageDevice-level filterSSFGD for this chiller unit to improve power factor, filter out characteristic sub-harmonics, stabilize system voltage, improve power quality, and ensure electrical safety.
Device-level Filter Effect Analysis
After the low voltageDevice-level filterSSFGD device is put into operation, the total harmonic distortion of current is reduced from 50% to 3.6%, and the total harmonic distortion of voltage is reduced from 5.5% to 0.7%. The absolute value of the 5th current harmonic distortion is reduced from 70A to 2.7A, solving the power quality problem for users.
Operating Data
Improving energy efficiency and power quality is what Guangda has always been committed to providing as an optimization solution for power systems. We have a professional team that can provide customized solutions based on the specific needs of customers, bringing more stable and high-quality power support to customers' production and operations. If you have related issues, please feel free to contact us.
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