Solutio Comprehensiva ad Incrementum Praestantiae pro Transformatoribus Transmissionis: Optimum Refrigerationis et Reductio Perditorum Circuitus Magneticum

1. Fundamentum et Difficultates

Cum continua crescentia onerum electricorum et astringentioribus exigentis stabilitatis operationis rete, transformatores transmissivi graves difficultates obviantur in ratione efficientiae operationis, controllo incrementi caloris, et longaevitate. Temperaturae operativae nimiae accelerant senectutem materialium insulatorum, breviunt vitam instrumentorum, et augeant pericula deficiendi. Magnae amissiones circuitus magneticum (praecipue amissio ferri et cupri) minuunt rationem utilitatis energiae, adferentes costus operativos inutiliter. Ad solvendum duos nuclei problemata communiter inveniuntur in transformatoribus transmissivis—incrementum caloris nimium et magnae amissiones circuitus magneticum—hanc solutionem integram formulat.

2. Obiectiva Solutionis

• Significanter Reducere Temperaturas Operativas: Controlem temperaturam olei superioris et loci calidi spirem infra margines operativos tutores.
• Efficaciter Reducere Ammissiones Circuitus Magneticum: Concentrari in reducendo amissiones sine onere (amissio ferri) et sub onere (amissio cupri), augendo rationem efficientiae operativae totius.
• Augere Fiduciam Operationis: Minuere frequentias deficiendi causatas ab overheating et amissionibus nimium, extendendo vitam servitii transformatoris.
• Optimizare Costum Totius Cyclicus Vitae: Meliorare rationem economicam transformatoris per economias energiae et frequenter minoris manutenctionis.

3. Nuclei Misure Mitigationis

Hanc solutionem adoptat strategiam integratam de "Controllo Fontis Ammissionum + Potentia Augmenta Dissipationis Caloris + Managementum Conditionis Precise":

3.1 Optimizatio et Upgradatio Systematis Refrigerationis, Meliorando Efficientiam Dissipationis Caloris (Adfaciens Incrementum Caloris)

• Usare Methodos Refrigerationis Altae Efficientiae:
• Ventilatio Aeris Coacta (OFAF/ODAF): Retrofitto transformatores aeris naturaliter refrigerati (ONAN) vel aeris coacte refrigerati (ONAF) existentes, vel equippe novos unitates cum fanis axialis altae performance. Selegere fanos efficientes, parvo soni, et resistentes meteorologicae combinatos cum controllo intelligenti fluxus aeris (exempli gratia, initiatio/cessatio automatica basata super temperatura vel adjustmentum variabilis frequentiae drive) ad significanter augmentando efficientiam convectionis aeris in superficie radiatori et rapidas removendo calorem.
• Refrigeratio Olei Aqua Coacta (OFWF): Prioritaria pro transformatoribus ultra-magna capacitate, unitatibus cum factoribus oneris magna, vel his operantibus in altis temperaturis ambientibus. Equippe cum pomis olei altae performance et exchangers calorifici laminae ad utendum magnae specificae capacitatis caloris aquae pro efficienti exchange calorifico. Requirunt systemata tractamenti aquae (ad preveniendam incrustationem et corrosionem) et mechanismos assurationis fidelitatis (exempli gratia, circuitus aquae duplices, pompae suppletoriae).
• Refrigeratio Adjuvata Tuberum Caloris: Installe modulos tuberum caloris in punctis criticis radiatori ad efficienter conducendo et dissipando calorem loci calidi localis per principium mutationis phase.
• Optimizare Structuram et Dispositionem Radiatoris:
• Utare radiatoribus cum area superficiei incrementa (exempli gratia, radiatores finned, panel) et designis viae fluxus optimatis.
• Sequere vias fluxus mediae refrigerationis (aer vel aqua) lises, eliminare restrictiones localis fluxus, et meliorare uniformitatem dissipationis caloris.
• (Pro refrigeratione aerea) Optimizare positionem ventili et design ductus ad assequendum uniformem coverage aeris super superficies radiatori, minimizando zonas mortuas.
• Controllo Refrigerationis Intelligentis:
• Automate adjustare output systematis refrigerationis (velocitas/numerus ventilatorum, ratio fluxus pome olei) basata super monitoring realis temporis temperaturarum olei, spirem, et ambientalis. Assequitur refrigerationem secundum necessitatem, garantens efficaciam dissipationis caloris dum minimizans consumtionem energiae auxiliarum equipmentorum.

3.2 Optimitatio Materialis et Structurae Nuclei, Reducendo Amissio Ferri (Controllo Ammissionis Nuclei Magneticum)

• Selegere Materialis Nuclei Altae Performance:
• Prioritari laminae silicis ferri cold-rolled altae permeabilitatis, parvae unitatis amissionis (exempli gratia, HiB steel) vel materialis amorphous alloy plus advanced (offerentia magnum beneficia pro reductione amissionis sine onere).
• Strictly control silicon steel sheet thickness, flatness, and insulation coating quality to minimize hysteresis losses and eddy current losses.
• Optimizare Design et Processus Fabricationis Nuclei:
• Implementare technicas step-lap stacking ad minimizandum reluctantium magneticum in iuncturis, reducendo additionales amissiones ferri.
• Precise control core stacking factor and clamping force to ensure uniform magnetic path distribution and avoid local over-saturation.
• (Applying Advanced Technologies) Explore techniques like laser scribing (Laser Scribbling) to further optimize material magnetic domain structure.
• Optimizare methodos grounding nuclei et shielding ad reducendo amissiones vagantes in componentibus structuralibus.

3.3 Optimitatio Design Spirem et Processus Improvement, Reducendo Amissio Cupri (Controllo Nuclei Ammissionis Key)

• Optimizare Structuram Spirem et Design Electromagneticum:
• Precise calculate ampere-turn distribution, optimize conductor cross-section shape (e.g., using continuously transposed cables - CTC or self-bonding transposed cables - TTC) to minimize circulating current and eddy current losses.
• Reasonably select conductor material (high-conductivity oxygen-free copper) and current density, effectively reducing DC resistance losses while meeting temperature rise constraints.
• Optimize winding height, diameter, and radial dimensions to control leakage flux and reduce stray losses.
• Advanced Manufacturing Processes:
• Ensure uniform winding compactness using constant-tension winding equipment.
• Employ advanced Vacuum Pressure Impregnation (VPI) or resin casting processes to ensure thorough filling of gaps with insulating materials, improving thermal conductivity and mechanical strength, thereby aiding heat dissipation and reducing partial discharges.

3.4 Monitoring Conditionis Circuitus Magneticum et Manutenctio Proactiva (Managementum Circulus Clausus, Garantens Performance Longaevitatis)

• Implementare Monitoring Precise Conditionis Circuitus Magneticum:
• Comprehensively assess magnetic circuit health by integrating online monitoring (e.g., Dissolved Gas Analysis - DGA, high-frequency partial discharge monitoring, vibration/acoustic noise monitoring, infrared thermography) and offline testing (periodic winding deformation testing, no-load & load loss testing, core ground current testing).
• Focus Monitoring: Signs of core multi-point grounding faults, abnormal loss fluctuations, overheating of magnetic shields and clamping structures.
• Establish a Preventive Maintenance Mechanism:
• Develop targeted magnetic circuit maintenance plans based on condition monitoring data and operational history.
• Periodically inspect core and clamping structure grounding: Ensure reliable single-point grounding, promptly detect and rectify multi-point grounding faults (which significantly increase iron losses and cause overheating).
• Inspect magnetic shields, clamps, and other structural components: Check for looseness, overheating, or discharge traces; promptly eliminate abnormalities.
• During core/lid lifting inspections, conduct focused checks and maintenance on core lamination joints and clamping condition.
• Perform in-depth diagnostic analysis on detected upward trends in abnormal losses to identify root causes and implement corrective actions.

4. Beneficia Expectata

• Significant Reduction in Temperature Rise: Operating temperatures (especially hotspot temperatures) are expected to be effectively controlled, with reductions reaching projected targets (e.g., 15-25%), greatly alleviating thermal aging stress on insulation.
• Effective Reduction in Magnetic Circuit Losses:
• Iron loss (No-Load Loss): Expected reduction of 20-40% through new materials and processes (especially significant when using amorphous alloys).
• Copper loss (Load Loss): Expected reduction of 10-25% through optimized winding design.
• Overall efficiency improvement of 1-3 percentage points, delivering considerable economic benefits and carbon emission reduction.
• Substantial Improvement in Reliability: Failure risks caused by overheating and magnetic circuit abnormalities are significantly reduced, enhancing equipment availability and extending service life.
• Optimized Total Life Cycle Cost: Despite potentially higher upfront investment (e.g., high-performance materials, advanced cooling systems), the benefits derived from long-term energy savings, reduced maintenance costs, and extended lifespan are more substantial, achieving a favorable Return on Investment (ROI).

5. Applicable Scope

This solution applies to newly built and in-service oil-immersed transmission (power) transformers at 35kV voltage level and above. Specific measures can be customized and implemented based on the transformer's capacity, voltage level, operating environment, criticality, and current condition.