GIS Voltage Transformer Technology Optimization Solution: Technological Innovation Enhancing Insulation Performance and Measurement Accuracy Akwụkwọ ịghọta teknụzụ ihe ezie na akwụkwọ mgbakwụnye gịrị isi GIS: Ịgba Nkàsite Ihe Ezie na Akụzi Ọtụtụ Ụzọ na Ọtụtụ Asụsụ
Ⅰ. Analisi na Nyanankuwa na Musiba
GIS (Gas-Insulated Switchgear) na gadi na maimaitaccen tsohon kafa suna da matsalolin biyu a cikin yanayi na kafa mai zurfi:
- Zafiya na Tsohon Kafa Mai Zurfi
- Impurities na SF₆ gas (mai zafi, byproducts na yaki) suna haifar da zafiya na tsohon kafa, wanda ya haifar da tsirrai na tsohon kafa.
- Gadon hawa (daga -40°C zuwa +80°C) suna haifar da dabi'ar gas, wanda ya haifar da PDIV (Partial Discharge Inception Voltage).
- Tsirrai na Kyakkyawan Kwamfuta
- Drift na core permeability (drift na 0.05%/K).
- Hawuwar frequency na system (±2Hz) suna haifar da ratio/phase angle errors zuwa limits.
Bayanai na sauran kungiyar: Ayyuka na gadi suna iya haifar da kyakkyawan kwamfuta ta class 0.5 a cikin yanayi mai zurfi, da rate na kusa ta shekarar zuwa 3%.
II. Hanyoyi na Mafi Girma don Inganta Na'ura
(1) Inganta na Tsohon Kafa Mai Zurfi Nano-Composite
|
Module na Na'ura |
Points na Yadda Ake Gargace |
|
Nano Insulation Material |
Al₂O₃-SiO₂ nano-composite coating (particle size: 50-80nm) an amfani da shi don inganta resistance na tracking na epoxy resin daga ≥35%. |
|
Hybrid Gas Optimization |
SF₆/N₂ (80:20) mixture filling, ya haifar da temperature na liquefaction zuwa -45°C da kuma ya haifar da risk na leakage zuwa 40%. |
|
Enhanced Sealing Design |
Metal bellows dual-seal structure + laser welding process, leakage rate ≤ 0.1%/year (IEC 62271-203 standard). |
Validation na Na'ura: An yi 150kV power-frequency withstand voltage test da 1000 thermal cycles; partial discharge level ≤3pC.
(2) Full-Condition Digital Compensation System
A[Temperature Sensor] --> B(MCU Compensation Processor)
C[Frequency Monitoring Module] --> B(MCU Compensation Processor)
D[AD Sampling Circuit] --> E(Error Compensation Algorithm)
B(MCU Compensation Processor) --> E(Error Compensation Algorithm)
E(Error Compensation Algorithm) --> F[Class 0.2 Standard Output]
Core Algorithm Implementation:
ΔUcomp=k1⋅ΔT+k2⋅Δf+k3⋅e−αt\Delta U_{comp} = k_1 \cdot \Delta T + k_2 \cdot \Delta f + k_3 \cdot e^{-\alpha t}ΔUcomp=k1⋅ΔT+k2⋅Δf+k3⋅e−αt
Where:
- k1k_1k1 = 0.0035/°C (Temperature Compensation Coefficient)
- k2k_2k2 = 0.01/Hz (Frequency Compensation Coefficient)
- k3k_3k3 = Aging Attenuation Compensation Factor
Real-time correction response time <20ms; operational temperature range extended to -40°C ~ +85°C.
III. Quantitative Benefit Forecast
|
Metric Item |
Solution na Gadi |
This Technical Solution |
Magnitude na Inganta |
|
Kyakkyawan Kwamfuta Class |
Class 0.5 |
Class 0.2 |
↑150% |
|
PD Inception Voltage (PDIV) |
30kV |
≥50kV |
↑66.7% |
|
Design Life |
25 years |
>32 years |
↑30% |
|
Annual Inspection Frequency |
2 times/year |
1 time/year |
↓50% |
|
Lifecycle O&M Cost |
$180k/unit |
$95k/unit |
↓47.2% |
IV. Results na Validation na Na'ura
- Data na Type Test (3rd Party Certified):
- Temperature Cycling Test: Ba da 100 cycles (-40°C ~ +85°C), ratio error change < ±0.05%.
- Long-Term Stability: Ba da 2000h accelerated aging test, error shift ≤ 0.05 class.
- Demonstration Project (750kV Substation):
Babu record na kusa ba a cikin 18 months of operation. Maximum measured error: 0.12% (outperforming class 0.2 requirements).
V. Engineering Implementation Path
- Equipment Customization Cycle:
- Solution Design (15 days) → Prototype Manufacturing (30 days) → Type Testing (45 days)
- Field Upgrade Solution:
- Compatible with existing GIS gas chamber interfaces (Flange standard IEC 60517).
- Outage replacement time ≤ 8 hours.
- Smart O&M Support:
- Built-in H₂S/SO₂ micro-environment sensors.
- Supports IEC 61850-9-2LE digital output.
