1000V Low Voltage Compensation System For Submerged Arc Furnace
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1000V Low Voltage Compensation System
,Arc Furnace Low Voltage Compensation
,Submerged Arc Furnace Low Voltage Compensation
Product Description
SAF Low Voltage Compensation System
Low voltage compensation systems are mainly used in 0.4kV and 0.69kV distribution systems, suitable for refining furnaces, auxiliary equipment, and workshop distribution. National standard GB/T 15576-2020 specifies technical requirements for low-voltage reactive power compensation assemblies.
I. General Parameters of Low Voltage Compensation Device
| Parameter | Specification |
|---|---|
| Rated Voltage | ≤1000V (or 1140V) |
| Frequency | ≤1000 Hz |
| Dynamic Response Time | Semiconductor switching ≤1s |
| Filtering Function Requirement | Devices with filtering function must reduce system harmonic content by more than 50% |
| Capacitor Inrush Current | Not exceed 1.3 times rated value |
| Insulation Material Temperature Resistance | 130℃ |
| Short-circuit Withstand Current | ≥15kA (for devices above 150kvar) |
| Outdoor Type Ambient Temperature | -25℃~40℃ |
II. Low Voltage Reactive Power Compensation Controller Parameters
| Parameter | Specification |
|---|---|
| Voltage Level | 400V / 660V |
| Output Channels | 12, 16, 18 |
| Sampling Parameter | Fundamental power factor/Fundamental reactive power |
| Control Mode | Cyclic switching/Coded switching |
| Mixed Compensation Schemes | 6 types |
| Switching Coding Modes | 12 types |
| Harmonic Environment Adaptability | Reliable operation under high harmonics and non-sinusoidal current |
III. Comparison of High and Low Voltage Compensation Systems
| Comparison Item | High Voltage Compensation System | Low Voltage Compensation System |
|---|---|---|
| Voltage Level | 6kV, 10kV, 35kV | 0.4kV, 0.69kV |
| Applicable Standard | Electric power industry standards | GB/T 15576-2020 |
| Main Application | Large arc furnaces, submerged arc furnaces, rolling mill busbars | Refining furnaces, auxiliary equipment, workshop power distribution |
| Compensation Mode | Mainly centralized compensation | Centralized compensation, group compensation, end compensation |
| Dynamic Response Time | SVC: 10-20ms, SVG: <5ms | Semiconductor switch ≤1s |
| Equipment Composition | HV switchgear + capacitor bank + reactor + discharge coil + arrester | LV cabinet + controller + switching switch + capacitor + reactor |
| Installation Location | HV busbar side of substation | LV side of distribution room or near the electrical equipment |
| Cost | Higher (including HV switchgear) | Relatively lower |
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