Pagsusuri ng mga Parehe sa Insulator at mga Sistemang Solusyon

1. Malalim na Pagsusuri ng mga Dahilan ng Paglabas ng Kuryente

1. Kontaminasyon sa Ibabaw at Ionization
   o Mekanismo: Ang mga kontaminante (dust na asin, deposito ng kemikal) ay electrolyze sa mga kapaligiran na may kahalumigmigan, nagpapabuo ng mga daang konduktib.
   o Kritikal na Threshold: Ang leakage current ay tumaas kapag ang relative humidity >75% at ang contamination density >0.1mg/cm².
2. Distorsyon ng Electric Field Dahil sa mga Tiktik na Tubig
   o Mekanismo: Ang mga tiktik na tubig ay nakakalat sa mga gilid ng shed, nagpapataas ng lokal na lakas ng electric field sa ibabaw ng limit (>3kV/cm), nag-trigger ng corona discharge.
3. Mga Defekto sa Materyales at Struktura
   o Mekanismo: Ang mga internal na voids/cracks ay nag-iinduce ng partial discharge (PD >20pC), nagdudulot ng pagkasira ng insulation sa pamamagitan ng cumulative damage.

II. Quantitative Assessment of Discharge Impacts

III. Full-Chain Solutions

1. Preventive Maintenance System
   • Smart Cleaning Cycle: Dynamically adjust cleaning thresholds based on ESDD monitoring (recommended NSDD ≤0.05mg/cm²).
   • Hydrophobicity Restoration: Apply RTV Type II anti-pollution flashover coating (contact angle >105°).
2. Active Protection Design
   • Aerodynamic Optimization: Adopt variable-diameter shed structure to boost water droplet shedding efficiency by 70%.
   • Electric Field Grading: Install grading rings (field gradient ≤0.5kV/cm).
3. Condition Monitoring & Replacement Criteria
   Implement a three-tier diagnostic protocol:
   (1) Infrared Thermography: Trigger ultraviolet (UV) imaging if localized hotspots show ΔT >15°C above ambient (per IEEE 1313.2).
   (2) Discharge Pattern Validation: Use UV imaging to confirm corona distribution.
   (3) Discharge Quantification: If UV detects anomalies, conduct ultrasonic PD detection. Replacement is mandated when:
• PD >100pC (DL/T 596 Standard)
• PRPD spectrum shows surface/internal defect patterns.
  Non-critical cases return to routine monitoring.

IV. Technology Upgrade Path
• Material Revolution: Replace ceramic with composite insulators (arc resistance >250s, autonomous hydrophobicity transfer).
• Digital Twin Integration: Embed RFID chips + 3D electric field simulation to achieve ≤5% lifespan prediction error.

Conclusion
Coordinated contamination classification, structural optimization, and smart diagnostics reduce insulator discharge failures to 0.03 incidents/100km·year (IEEE 1523 Standard), significantly enhancing grid intrinsic safety.

Core Advantages

1. Cost Efficiency: Preventive maintenance costs 5.8× lower than post-failure repairs.
2. Adaptability: Compatible with 35kV~1000kV voltage classes.
3. Future-Proofing: Supports IoT integration for smart substations.