
Pangunahing Layunin: Pagpapabuti ng Katumpakan at Pagsusulong ng Insulasyon
Mga Applicable na Sitwasyon: Mga coastal power plants, chemical plants, mataas na humidity/mataas na polusyon na masamang kapaligiran
I. Analisis ng mga Technical Pain Points
Ang tradisyonal na AIS-VT ay nakakaharap sa dalawang pangunahing isyu sa komplikadong kapaligiran:
- Pagbabago ng Katumpakan:
- Variasyon ng dielectric constant dahil sa pagbabago ng humidity at pag-accumulate ng contaminant, nagdudulot ng secondary-side output error na lumalampas sa limit (>Class 0.5).
- Panganib ng Pagkabigo ng Insulasyon:
- Surface flashover na dulot ng salt mist/chemical pollutants, nagbabawas ng breakdown voltage ng >30%.
II. Inobatibong Technical Solutions
- Pag-upgrade ng Insulation System: Nano-Composite Silicone Rubber Bushings
- Mga Katangian ng Materyales:
- Lifespan ng hydrophobicity ≥25 taon (IEC 62073 accelerated aging verified), nagpapababa ng penetration ng moisture.
- Pollution flashover withstand voltage ↑40% (≥145 kV/m under salt fog test).
- Optimisasyon ng Struktura:
- Angled shed design + multi-level creepage extension, nagpapataas ng self-cleaning efficiency ng 50%.
- Dynamic Precision Compensation System
- Temperature/Humidity Sensors: Embedded high-precision sensors (±0.5% RH/±0.1℃) para sa real-time environmental monitoring.
- AI Compensation Algorithm: Nagpapanatili ng stable 0.1-class accuracy (IEC 60044-2024 Class 0.1) sa lahat ng operating conditions.
- Anti-Ferroresonance Magnetic Circuit Design
- RFC Damping Circuit: Parallel nonlinear resistors (10kΩ~1MΩ adaptive adjustment) nagpapababa ng resonant overvoltage.
- Zero-Sequence Flux Cancellation: Symmetric dual-magnetic circuit structure nagpapababa ng harmonic distortion hanggang <0.2%.
III. Performance Validation (IEC Standard Tests)
|
Test Item
|
Traditional Solution
|
This Solution
|
Improvement
|
|
Power Frequency Withstand
|
95 kV (dry)/70 kV (wet)
|
130 kV (dry)/115 kV (wet)
|
+37%
|
|
Pollution Flashover (E5 class)
|
28 kV
|
40 kV
|
+43%
|
|
Annual Failure Rate
|
>1.5%
|
0.2%
|
↓87%
|
|
Temp. Cycling Error
|
±0.5%
|
±0.1%
|
5× mas mataas na katumpakan
|
IV. Summary ng mga Technical Advantages
- Resilience sa Extreme Conditions:
- Certified para sa C5-M corrosion resistance (ISO 12944), nakakatipon ng pH=2~12 chemical environments.
- Optimization ng Lifecycle Cost:
- Maintenance cycle na inextend hanggang 10 taon; O&M costs na nabawasan ng 60%.
- Smart Expansion Capability:
- Sumusuporta sa IEC 61850 communication interface para sa real-time data upload sa smart grids.
V. Mga Application Cases
- Coastal Wind Farm (avg. humidity 85%):
- Matapos ang pagpalit ng 32 traditional AIS-VTs: zero annual flashover faults; metering error na napatay sa Class 0.1.
- Chlor-Alkali Chemical Plant (chlorine corrosion):
- Zero insulation degradation matapos 18 buwan; bushing hydrophobicity na napanatili sa HA-grade (pinakamataas na klase).
Compliance Standards: IEC 60044-2024 / IEEE C57.13 / GB/T 20840.7-202X