PROJECT CASE
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Analysis of Economic Benefits of Low-Voltage Intelligent Mixed Filtering Devices in the Guangdong Cement Industry
Time：
2019-07-30
Based on the on-site testing and communication with Guangdong Guangxin Qingzhou Cement Co., Ltd., and considering the current electricity usage of 51TR01 and 61TR01, our company has decided to specifically adopt our products: low-voltage intelligent hybrid filtering devices (mainly including active filtering modules and intelligent filtering compensation modules produced by Guanda Electric). These devices will provide reactive power compensation, filter out harmonics, improve system voltage, address low power factor and electricity harmonics issues, and simultaneously reduce operational safety risks for the equipment.
Customer Name:Guangdong Guangxin Qingzhou Cement Co., Ltd.
Project Background
Guangdong Guangxin Qingzhou Cement Co., Ltd. is a member of the Hong Kong"Yangtze River Infrastructure Group". It was established in 1998 as a joint venture company formed by the acquisition of the original "Guangdong Yunfu Cement Plant" by "Qingzhou Yingni (Group) Co., Ltd." with an annual cement production capacity of 1 million tons. Qingzhou Yingni Group also has bulk cement transfer stations in Guangzhou, Shenzhen, and Zhuhai. The main production equipment of Guangdong Guangxin Qingzhou Cement Co., Ltd. is fully imported from the French FCB company. The equipment adopts modern design, and the finished cement storage and packaging equipment uses advanced products designed by the German Haver company, such as rotary packaging machines, and has two bulk cement lines with a dispersal capacity of 300 tons/hour.
Electricity Overview (Motors, Heaters, Fans)
According to the on-site inspection of Guangdong Guangxin Qingzhou Cement Co., Ltd., it is known that when the transformer is operating normally, the original compensation device has a large number of capacitors and switching switches burned out, the power factor is severely insufficient, and previous tests have shown that the harmonic content of the on-site current is22%, severely polluting the power grid and the quality of electrical energy.,There aresafety hazards in equipment operation..
Low Voltage Intelligent Hybrid Filtering DeviceDesign Plan
Based on on-site testing and communication, considering51TR01,61TR01the current situation of electricity consumption, our company has decided to adopt our products specifically:Low Voltage Intelligent Hybrid Filtering Device(mainly including the active filtering module produced by Guangda Electricand)Intelligent Filtering Compensation Module, providing reactive power compensation, filtering harmonics, improving system voltage, solving low power factor and harmonic problems in electricity consumption, while reducing the safety hazards of equipment operation.Low Voltage Intelligent Hybrid Filtering Device Effect Analysis
Dynamic Filtering Compensation Device
Low Voltage Intelligent Hybrid Filtering Device(After operation, the current decreased from, providing reactive power compensation, filtering harmonics, improving system voltage, solving low power factor and harmonic problems in electricity consumption, while reducing the safety hazards of equipment operation.987.1A to 498.1, greatly reducing the system's reactive current.;The current harmonic distortion rate decreased from29% to 5.3%.Improved the quality of electricity consumption.,The harmonic voltage distortion rate decreased fromThe current harmonic distortion rate decreased from15% to 2%, meeting the national standard requirement of within 5%; the absolute value of the 5th harmonic current decreased from 251.4A to 19.2A, with a filtering rate of 92%; the absolute value of the 7th harmonic current decreased from an average of 40.1A to 5.5A, with a filtering rate of 86%.Meeting national standard requirements.,.Analysis of Direct Economic Benefits from Reduced Line Losses
1. :After the device is put into operation, it is expected that the annual savings from line loss will not be less than37,000.Analysis of Direct Economic Benefits from Transformer Capacity Increase
2. Annual savings of aboutAfter the device is put into operation, it is expected that the annual savings from line loss will not be less than28,000.Improving power factor reduces transformer losses:
3. After investment, the power factor increased from0.78 to above 0.97, with a loss reduction rate of about 36%.Analysis of Economic Benefits from Reducing Harmonics:
4. After the device is put into operation, harmonics are reduced, thereby reducing transformer copper losses to7.2-3.3=3.9kW.Operating Data
Low Voltage Intelligent Hybrid Filtering DeviceBefore installation, the three-phase current
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averagedvaluewas 987.1A.After installation, the three-phase current | was 498.1.valuewas 987.1Before installation, the maximum harmonic current distortion rate at the free-fall distribution incoming cabinet was about 29%.After installation, the three-phase current |
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After installation, the maximum harmonic current distortion rate at the free-fall distribution incoming cabinet was about 5.3%. | Guangda Electric Stickers |
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Guangda Electricunder the brand building, we insist on providing sufficient value returns and feedback to every user who believes in us. To achieve stable product quality, werequireGuangdapeople to reach.人达到200%CraftsmanshipWe inject craftsmanship. In material selection, we cannot afford mistakes; in craftsmanship, we do not allow laziness.
Dear customers, please rest assured of our craftsmanship, products, and services. We are committed to becoming a valuable intelligent filtering compensation module, active filtering module (Active Filter),Low Voltage Intelligent Hybrid Filtering Deviceand harmonic management manufacturer.
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