Dynamic Reactive Power Compensation Solution para sa Electric Furnace Transformers

Solusyon sa Dynamic Reactive Power Compensation para sa Electric Furnace Transformers​

Ang mga electric furnace (lalo na ang arc furnaces at submerged arc furnaces) ay nagpapakita ng malaking shock load characteristics sa panahon ng proseso ng pagmumulto, na nagdudulot ng malubhang pagbabago ng power factor (karaniwang nasa 0.6 hanggang 0.8). Ito ay hindi lamang nagdudulot ng pagbabago ng grid voltage, flicker, at harmonic pollution, kundi pati na rin ang pagtaas ng line losses at pagbawas ng efficiency ng grid power supply.

Upang harapin ang hamong ito, ang solusyon na ito ay gumagamit ng high-performance dynamic reactive power compensation devices (tulad ng SVC/TSC o SVG), na nakaintegrado sa coordinated control ng electric furnace transformer:

1. Real-time Monitoring & Dynamic Response: Ang high-speed sensors ay patuloy na nagsasalamin ng mga parameter ng sistema (power factor, voltage, current, etc.). Gamit ang advanced control algorithms (halimbawa, instantaneous reactive power theory), ang analisis ng data ay matatapos sa loob ng 10~20ms, na nagtrigger ng mga komando ng compensation.
2. Precise Reactive Power Regulation: Ang automatic switching ng capacitor banks/reactors (TSC/TCR mode) o mabilis na IGBT-based reactive power output adjustment (SVG mode) ay tumutugon sa mga pagbabago ng load. Ito ay dinynamically nagpapatibay ng power factor higit sa 0.92 at sumuppres ng voltage flicker sa loob ng IEEE 519 standard limits.
3. Synergistic Efficiency Optimization: Ang compensation device at transformer ay bumubuo ng closed-loop control system, na nagpapababa ng copper at iron losses ng transformer, minimizes ang grid reactive power flow transmission, at collectively nagpapababa ng line losses sa 6%~15%.

Value Realization:

• Enhanced Grid Stability: Nagbabawas ng voltage fluctuations, na nagpapahinto ng tripping ng mga kalapit na equipment sa panahon ng operasyon ng furnace.
• Compliance with Power Quality Standards: Sumasabay sa mahigpit na industriyal na requirements (THD ≤ 5%, flicker Pst ≤ 1.0).
• Reduced Operating Costs: Nag-iwas sa utility power factor adjustment penalties at nagpapahaba ng lifespan ng transformer.
• Compatible Expansion Capability: Sumusuporta sa integration kasama ang Active Power Filters (APF) para 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:

1. Core Technology
   Gumagamit ng fully digital control chips (halimbawa, DSP+FPGA architecture) para sa millisecond-level response, na lubos na lumalampas sa compensation speed (seconds) ng traditional contactor switching. Ito ay acommodates ang abrupt load changes na characteristic ng electric furnaces.
2. Cost Optimization
   Idinisenyo para sa medium-voltage grids (6~35kV). Δ/Y-connected multi-stage capacitor bank configurations reduce per-unit capacity costs. Coordinated with transformer tap changers to minimize compensation device capacity requirements, lowering investment costs by over 30%.
3. Reliability Assurance
   May built-in harmonic protection algorithms (auto-avoidance of 5th, 7th, 11th harmonic resonance points), temperature monitoring, at mabilis na arc-flash bypass protection. Nakakamit ng equipment ang MTBF (Mean Time Between Failures) na 100,000 hours.