
Solusyon sa Dynamic Reactive Power Compensation para sa Electric Furnace Transformers
Ang mga electric furnaces (lalo na ang arc furnaces ug submerged arc furnaces) adunay significant shock load characteristics sa panahon sa smelting processes, nga nagdulot og severe power factor fluctuations (typical na anaa sa 0.6 hangtod 0.8). Kini dili lang mobati sa grid voltage fluctuations, flicker, ug harmonic pollution, apil na usab naka-increase sa line losses ug nakapangita sa grid power supply efficiency.
Arong mapugos kini nga hamubo, ang solusyon kini gigamit og high-performance dynamic reactive power compensation devices (tulad sa SVC/TSC o SVG), integrated sa coordinated control sa electric furnace transformer:
- Real-time Monitoring & Dynamic Response: Ang high-speed sensors continuous nga mograb sa system parameters (power factor, voltage, current, etc.). Gamiton ang advanced control algorithms (e.g., instantaneous reactive power theory), ang data analysis kompleto gikan sa 10~20ms, triggering compensation commands.
- Precise Reactive Power Regulation: Automatic switching sa capacitor banks/reactors (TSC/TCR mode) o rapid IGBT-based reactive power output adjustment (SVG mode) nagsaulog sa pagbag-o sa load. Kini dynamically stabilizes ang power factor above 0.92 ug suppresses ang voltage flicker sa IEEE 519 standard limits.
- Synergistic Efficiency Optimization: Ang compensation device ug transformer form og closed-loop control system, reducing transformer copper ug iron losses, minimizing grid reactive power flow transmission, ug collectively lowering line losses by 6%~15%.
Value Realization:
- Enhanced Grid Stability: Nagreduce sa voltage fluctuations, preventing tripping sa surrounding equipment sa panahon sa operation sa furnace.
- Compliance with Power Quality Standards: Nakakatugon sa stringent industrial requirements (THD ≤ 5%, flicker Pst ≤ 1.0).
- Reduced Operating Costs: Nagavoid sa utility power factor adjustment penalties ug extending transformer lifespan.
- Compatible Expansion Capability: Nag-support sa integration sa Active Power Filters (APF) aron sa combined "Reactive Power + Harmonic" management.
Typical Application Scenarios:
► Steelmaking Arc Furnaces ► Ferroalloy Submerged Arc Furnaces ► Si-Ca-Ba Smelting Furnaces ► Carbon Electrode Baking Furnaces
Solution Advantage Description:
- Core Technology
Gigamit ang fully digital control chips (e.g., DSP+FPGA architecture) aron sa millisecond-level response, far exceeding ang compensation speed (seconds) sa traditional contactor switching. Kini accommodates ang abrupt load changes characteristic sa electric furnaces.
- Cost Optimization
Gidesign alang sa medium-voltage grids (6~35kV). Δ/Y-connected multi-stage capacitor bank configurations reduce per-unit capacity costs. Coordinated sa transformer tap changers aron mapugos ang compensation device capacity requirements, lowering investment costs ngadto sa higit pa 30%.
- Reliability Assurance
Adunay built-in harmonic protection algorithms (auto-avoidance sa 5th, 7th, 11th harmonic resonance points), temperature monitoring, ug rapid arc-flash bypass protection. Nakakamit ang equipment MTBF (Mean Time Between Failures) of 100,000 hours.