PROJECT CASE
Guangda Electric Is A Professional Organization Dedicated To Solving Power Quality Problems Of Users
Case Study on the Renovation of Roller Kilns in the Manufacturing Industry
Time：
2020-11-18
Company Introduction: Guangdong Zhongpeng New Energy Technology Co., Ltd. is located in Foshan, China. It is a professional company that integrates research and design, processing and manufacturing, construction installation, and debugging services for lithium battery material sintering equipment. The company's main products include roller kilns, rotary kilns, box furnaces, and automated crucible handling systems, targeting domestic lithium battery material manufacturers. On-site Situation: There are currently 2 transformers with a rated capacity of 2500kVA, voltage levels of 10kV/0.4kV. Each roller kiln under the transformers is controlled by 3 distribution switches, experiencing low power factor and harmonic issues. Solution: Based on engineering experience, the original compensation...
Company Introduction
Guangdong Zhongpeng New Energy Technology Co., Ltd. is located in Foshan, China. It is a professional company that integrates research and design, processing and manufacturing, construction installation, and debugging services for lithium battery material sintering equipment. The company's main products include roller kilns, rotary kilns, box furnaces, and automated crucible handling systems, targeting domestic lithium battery material manufacturers.
On-Site Situation
There are currently 2 transformers with a rated capacity of 2500kVA, voltage levels of 10kV/0.4kV. The roller kiln under each transformer is controlled by 3 distribution switches, experiencing low power factor and harmonic issues.
Solution
Based on engineering experience, the original compensation cabinet was upgraded, replacing pure capacitive reactive power compensators with intelligent filtering compensation modules and active filtering modules from Guida Electric. The provided TSVGGD device is a new type of power electronic device that addresses power quality issues. This device includes an active power filter (APF) and intelligent filtering compensation modules, controlled by intelligent algorithms, with comprehensive compensation capabilities for reactive power, three-phase load imbalance, and harmonics, demonstrating superior performance in compensating reactive power, three-phase imbalance, and harmonics.
Main Features of Intelligent Filtering Compensation Module
The module integrates a knife melting switch, thyristor, capacitor, reactor, and monitoring protection system into one product.
Uses contactless zero-crossing triggering to control the circuit of the thyristor for switching capacitor groups, reducing inrush current.
Uses a 7% series reactor to suppress inrush current and prevent harmonic resonance events.
The capacitor has a rated voltage of 480V, increasing its terminal voltage for stable and reliable operation.
Each module has independent protection measures: fan cooling, capacitor temperature, reactor temperature, thyristor temperature, overcurrent, overvoltage, and phase loss protection functions.
Each module has independent display and remote real-time monitoring data: capacitor temperature, reactor temperature, thyristor temperature, three-phase current values, and abnormal fault information.
Each module uses a metal shell with explosion-proof functionality.
Operating Effect
Power Factor A phase 0.6213, B phase 0.5967, C phase 0.6395 (before activation)
Power Factor A phase 0.9473, B phase 0.8737, C phase 0.9623 (after activation)
Harmonic Voltage Distortion Rate A phase 8.860%, B phase 8.440%, C phase 9.329% (before activation)
Harmonic Voltage Distortion Rate A phase 4.774%, B phase 3.979%, C phase 4.289% (after activation)
Effect Description
Voltage Data: The total harmonic distortion rate of voltage decreased from 8.8% to 4.3% after the device was put into operation.
Power Data: The displacement power factor increased from 0.62 to 0.94 after the device was put into operation.
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