Solusyon sa Power Transformer: Dual Enhancement Strategy Batas sa Pag-optimize sa Insulation Material ug Oil Quality Management

Ⅰ. Pangunahon nga mga Hamon ug Layunin

Mga Hamon: Sa panahon sa matagumpay nga operasyon, ang mga transformer sa transmision naghaharap sa duha ka pangunahon nga isyu: aging ng mga materyales sa insulation (nagresulta sa pagbaba sa lakas sa insulation ug pagsusundan sa resistensya sa kainit) ug degradation sa insulating oil (tumong sa sulod sa tubig, nag-akumula ng impurities, tumong sa acid number, uban pa), na nagbabanta sa seguridad ug lifetime sa equipment.
Layunin: Pinaagi sa pag-upgrade sa materyales ug pagpa-ayo sa pag-manage, siguraduhon ang pagtaas sa estabilidad sa performance sa insulation, paghambal sa proseso sa degradation sa oil, ug sa dili pa, pagabot sa mas maayo nga reliability sa operasyon sa transformer, pagbawas sa gastos sa maintenance, ug pagpadayon sa lifetime.

II. Detalyadong Pagdescribe sa Solusyon

Pressboard: Pili-on ang bag-ong cellulose-based insulation paper (gani ang optimized T-UPS) o synthetic fiber insulation materials (e.g., polyaramid fibers sama sa Nomex) nga may excelenteng thermal stability (e.g., H-class o mas taas pa nga thermal rating) ug anti-aging capabilities. Kumpara sa tradisyonal nga materyales, sila mas makapareserve sa mechanical strength ug electrical performance sa presensya sa short-circuit current impacts ug high-temperature operating conditions.
Insulating Oil: Gamiton ang high-performance refined mineral oils o synthetic ester insulating oils. Ang refined oils adunay mas mababa nga sulfur content ug mas taas nga resistance sa oxidation; ang synthetic esters adunay significant advantages sama sa excelenteng biodegradability, ultra-high flash point, ug low hygroscopicity, na labi ka suitable para sa harsh environments o scenarios nga may mataas nga fire safety requirements.

Structural Optimization: Ihanda ang mas detalyado nga disenyo (e.g., simulation aron mapadali ang electric field distribution) para sa key components sama sa insulation barriers, angle rings, ug spacers, siguraduhon ang uniform nga thickness sa insulation layer walay weak points o structural stress concentrations.
Process Control: Strictly implement vacuum impregnation processes during manufacturing and assembly to ensure thorough saturation of insulation paper, eliminating internal defects like bubbles and voids, thereby improving overall insulation strength and dielectric performance consistency.

Regular Oil Testing: Establish scientific offline testing procedures (e.g., per GB/T 7595/IEC 60422), monitoring routine parameters including breakdown voltage, micro-water content, dielectric dissipation factor (tan δ), acid number, dissolved gas analysis (DGA), etc. Implement rapid response to abnormal indicators.
Online Monitoring Technology: Deploy online monitoring devices for parameters like oil moisture content, dissolved gas, and micro-particle count, enabling real-time visualization of oil condition and transitioning from time-based to condition-based maintenance.

Purification and Regeneration: Employ vacuum oil processing units (incorporating efficient dehydration, degassing, and precision filtration modules) for periodic oil filtration to remove moisture, gases, and solid contaminants. For oils with excessive acid number or tan δ but relatively mild aging, utilize adsorption regeneration (e.g., molecular sieve, silica gel treatment) or thermosiphon oil purifier technology to restore performance and extend oil change intervals.
Scientific Oil Replacement: Strictly execute oil replacement procedures according to specifications when oil degradation is severe or aging by-products cannot be effectively removed. Ensure new oil meets standards before injection, and strictly control dust and moisture during the replacement process.

Sealing Upgrade: Replace traditional materials with aging-resistant EPDM (Ethylene Propylene Diene Monomer) or fluoroelastomer seals, optimizing seal structure design for interfaces like flanges, valves, and bushings. For large transformers, equip with bellows-type conservator tanks (featuring dual-seal technology) to compensate for oil volume changes, maintain positive pressure, and completely isolate against external air and moisture intrusion.
Environmental Control: Install high-efficiency desiccant breathers (using silica gel/activated alumina) at tank vents, and regularly inspect/replace desiccant to ensure no moisture ingress during breathing. Maintain transformer rooms/oil pits dry and clean.

III. Benefits and Advantages sa Implementation

Direct Benefits: Significantly slow down the aging rate of the insulation system, maintaining high and stable insulation strength; drastically reduce dielectric losses and localized overheating risks caused by oil degradation; effectively suppress the development of internal latent faults (e.g., moisture ingress, impurity discharges).
Long-Term Value:

Enhanced Reliability: Substantially reduce unplanned outage rates caused by insulation or oil quality issues, ensuring continuous grid power supply capability.
Optimized Economic Efficiency: Extend major overhaul and oil change intervals, reducing maintenance resource consumption; significantly postpone the need for large-scale retrofits or replacements (enhancing lifecycle value).
Extended Lifespan: Comprehensive measures effectively delay the aging of critical components, enabling transformers to reach or exceed design life (extending lifespan by 5 to 15 years depending on operating conditions).
Safety Compliance: Meet mandatory requirements for insulation performance and oil quality management stipulated in electrical equipment preventive testing regulations and environmental laws.

IV. Quality Assurance and Implementation

Stringent Supplier Selection: Procure key materials (insulation paper, oil, seals) from top-tier brands possessing authoritative certifications (UL, VDE, CESI, etc.).
Standard Operating Procedures (SOP): Develop detailed operating specifications for insulation handling, vacuum oil filling, seal installation, and oil sampling/testing, with mandatory training enforcement.
Digital Platform Support: Utilize condition monitoring data management systems for trend analysis, enabling predictive maintenance decision support.
Expert Consultation: Provide full-cycle professional technical services, from solution customization to on-site guidance.