Hifadhi ya Mabadiliano ya GIS: Mbinu ya Kujenga Upya kwa Ajili ya Kuongeza Ufanisi wa Mabadilisho na Uwiano wa Mstari wa Msingi
Ⅰ. Tahlil ya Changamoto za Teknolojia
Vitufe vilivyovuviwa kwa gesi (GIS) ya wastani zinakubalika na changamoto mbili muhimu katika mazingira ya grid magumu:
- Usalama wa Mfumo wa Kuvuvi Usimamizi
- Mautusho ya gesi SF₆ (umeme, mchakato wa upandaji) huongeza mapaza ya paa, kusababisha upungufu wa usalama wa kuvuvi.
- Mabadiliko ya joto (-40°C hadi +80°C) huchangia mabadiliko ya ukubwa wa gesi, kutokufanya voltage ya kuanza ya partial discharge (PDIV).
- Muongozo wa Umezaji wa Data kuanguka
- Mzunguko wa joto wa core (mzunguko wa kawaida: 0.05%/K).
- Mabadiliko ya kiwango cha mfumo (±2Hz) huongeza makosa ya ratio/angle ya phase kwenye hatari.
Data kutoka kwenye nyanda inaelezea: Vifaa vilivyovuviwa kwa njia ya wastani vinaweza kuonyesha makosa ya mezani kwa kiwango cha 0.5 kwenye mazingira magumu, na kiwango cha kufeli kila mwaka kufikia zaidi ya 3%.
II. Suluhisho la Teknolojia la Msingi la Optimization
(1) Upgrading wa Mfumo wa Kuvuvi wa Nano-Composite
|
Moduli ya Teknolojia |
Nyakati za Kutatua |
|
Mtaala wa Kuvuvi wa Nano |
Al₂O₃-SiO₂ nano-composite coating (ukubwa wa particle: 50-80nm) unatumika kuboresha uwezo wa epoxy resin surface tracking resistance ≥35%. |
|
Uzalishaji wa Gesi wa Hybrid |
SF₆/N₂ (80:20) mixture filling, lowering liquefaction temperature to -45°C and reducing leakage risk by 40%. |
|
Mtaala wa Kuvuvi wa Nano |
Metal bellows dual-seal structure + laser welding process, leakage rate ≤ 0.1%/year (IEC 62271-203 standard). |
Uthibitishaji wa Teknolojia: Imepita majaribio ya 150kV power-frequency withstand voltage test and 1000 thermal cycles; partial discharge level ≤3pC.
(2) Mfumo wa Digital Compensation wa Full-Condition
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 |
Conventional Solution |
This Technical Solution |
Optimization Magnitude |
|
Measurement Accuracy 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. Matokeo ya Uthibitishaji wa Teknolojia
- Data ya Type Test (Third Party Certified):
- Temperature Cycling Test: After 100 cycles (-40°C ~ +85°C), ratio error change < ±0.05%.
- Long-Term Stability: After 2000h accelerated aging test, error shift ≤ 0.05 class.
- Demonstration Project (750kV Substation):
Zero failure records after 18 months of operation. Maximum measured error: 0.12% (outperforming class 0.2 requirements).
V. Njia ya Uelekezaji wa Ujenzi
- Cycle ya Customization ya Vifaa:
- Solution Design (15 days) → Prototype Manufacturing (30 days) → Type Testing (45 days)
- Suluhisho la Upgrade ya Nyanda:
- 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.
