Product Introduction
1. Product Description
The low-voltage reactive power compensation device for submerged arc furnaces is connected in parallel at the end of the bus tube. It consists of low-voltage AC filter capacitors and filter reactors, forming an LC filtering compensation circuit for phase-by-phase local compensation. The system reduces reactive power losses in the submerged arc furnace while simultaneously absorbing harmonics generated by unbalanced loads and electric arc smelting processes (mainly the 3rd and 5th characteristic harmonics), thereby reducing three-phase imbalance and effectively improving the power factor.
Composition of the Low-Voltage Reactive Power Compensation System for Submerged Arc Furnaces
1. Main Circuit: The main circuit consists of the compensation bus tube, isolating switch, fuses, vacuum contactors, low-voltage AC filter capacitors, and filter reactors, etc.
2. Control System: The control system consists of a controller, signal transmitters, control command signals, switching drive units, on-site command signals, interface information control modules, and low-voltage side protection signals.
When the smelting process begins, the system detects signals (high-voltage or low-voltage electrical signals) and calculates the required reactive power compensation based on system voltage, current, load, and power factor. The controller then sends signals to the drive unit, which operates the vacuum contactors to switch the compensation units in or out of operation until the control targets set by the controller are achieved.
2. Features & Advantages
⑴ Improved Power Factor
By providing local compensation for the large amount of reactive power consumed in the bus tubes, the transformer output capacity is increased, thereby enhancing the effective smelting input power.
⑵ Increased Active Power and Production Output
Since most furnace transformers operate under long-term overload conditions, the installation of the compensation system can increase production capacity by 8–10% without overloading the furnace transformer.
⑶ Reduced Power Losses
The system reduces losses in the bus tubes, transmission lines, and transformers, lowers higher-order harmonic levels, and minimizes additional losses in transformers and power networks.
⑷ Improved Electrical Parameters and Power Quality
By reducing harmonic interference, the system improves electrical parameters and enhances overall power quality.
⑸ Avoidance of Power Penalties
Prevents electricity penalty charges caused by low power factor.
⑹ Extended Equipment Service Life
Reduces operating vibration and noise of furnace transformers and bus tubes, thereby extending the service life of major equipment.
⑺ Optimized Management
The microcomputer-controlled compensation device can automatically print daily reports, record power outage durations, automatically calculate and print active and reactive energy consumption data, thereby improving the management and operational efficiency of the electric furnace system.
Product Specifications
Non-standard equipment; equipment design and supply can be carried out according to customer requirements.
Optional Customization Items: design, material, size, etc.
Equipment design and supply can be carried out according to customer requirements.
Appearance
See photos.
Design
Equipment design and supply can be carried out according to customer requirements.
uality Control
Certified in accordance with:
Quality Management System: CQC GB/T19001-2016 / ISO9001:2015
Occupational Health and Safety Management System: CQC GB/T45001-2020 / ISO45001:2008
Environmental Management System: CQC GB/T24001-2016 / ISO14001:2015
EU CE Certification.
After-sales Service
1. Packaging, Logistics & Delivery
International Export Packaging Standards
2. Installation & Commissioning
Technical personnel can be dispatched overseas for installation and adjustment, or on-site installation and commissioning guidance can be provided.
3. Operation Training
Technical guidance and technical training services are available.
4. Maintenance & Repair
Long-term equipment maintenance and technical support can be provided.
5. Spare Parts Support
Long-term spare parts supply is available.
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