High - Altitude High - Voltage Gas - Insulated Switchgear (HV GIS) Solutions: A Case Study of Vietnam - HV GIS in Challenging Terrains Amsa - Altitude High - Voltage Gas - Insulated Switchgear (HV GIS) Solutions: A Case Study of Vietnam - HV GIS in Challenging Terrains

Ⅰ. Tarihi na Proyekta

Terrain na Vietnam yana da gajeruwa mai kudar, tare da altitudes a wurare na northwest da Central Highlands na biyu yana iya ƙarin 1,000 mita. Wannan wurare suna da harkokin kasa, ciki har da:

• Makafi mai tsawo (ufanin 95%);
• Harkokin kasa mai yawa (ƙarin 32K);
• Kashe da zuba.

Idan an yi girma na tattalin arzikin Vietnam (GDP growth projected at 6.8% by 2025), samun kuli yana ƙarin. Duk da wannan, muhimman abubuwa sun haɗa da:

• Air-insulated switchgear (AIS) na gajeruwar altitudes yana iya ciyar da harkokin kasa, wanda yake ƙara da kula da kiyaye masu amfani;
• Amfani da renewable energy projects (e.g., solar and wind power) na gwamnatin Vietnam yana bukata masu amfani da shiga da kula da kiyaye masu amfani.

Idan an yi girma na wannan babu, High Voltage Gas Insulated Switchgear (HV GIS) — wanda yana da kyau ga design mai kusa, kuma yana da kyau ga harkokin kasa, da kuma yana da kyau ga maintenance-free characteristics — ya zama amsa mai kyau don inganta infrastructure na kula da kiyaye masu amfani a wurare na gajeruwar altitudes na Vietnam. Kyauccinsa a wurare na harkokin kasa yana bukata shi da amsa mai kyau don kula da abubuwan wurare.

​II. Amsa​

1. ​Zabtacce da Kudeta Teknikal​
• ​Weather-Resistant Design: ​High-voltage gas-insulated switchgear (HV GIS)​​ yana amfani da SF6 gas insulation, rated for 24–252 kV, da kuma yana da kyau ga altitudes ≤3,000 meters da kuma harkokin kasa daga -40°C zuwa +55°C. Gas density compensation devices suka zama don kula da loss of SF6 insulation strength caused by low atmospheric pressure at high altitudes.
• ​Moisture Prevention and Sealing: ​HV GIS​ yana da multi-layer sealing systems da desiccant adsorption devices don kula da moisture ingress in high-humidity environments, ta haka da gas chamber dew points ≤-40°C. Corrosion-resistant coatings (e.g., galvanization) suke kula da salt fog.
• ​Material Innovation: ​High-voltage gas-insulated switchgear (HV GIS)​​ components yana amfani da domestically produced polytetrafluoroethylene (PTFE) nozzle materials with breakdown strength ≥30 kV/mm. Arc ablation resistance suka zama da imported materials da kuma yana da kyau ga costs by 30%.
2. ​Smart Monitoring and Maintenance​
• ​Real-Time Condition Monitoring: ​HV GIS​ systems yana da temperature/humidity sensors, pressure sensors, da kuma partial discharge monitoring modules. Combined with Beidou Positioning System, cloud-based data transmission and anomaly alerts suka zama.
• ​Predictive Maintenance: For ​high-voltage gas-insulated switchgear (HV GIS)​, machine learning yana analyze historical climate and failure data to optimize maintenance cycles (e.g., intensified seal inspections before monsoon seasons), minimizing unplanned downtime.
3. ​Localized Adaptation and Installation Control​
• ​Terrain-Specific Planning: ​HV GIS​ deployment yana amfani da GIS technology to integrate Vietnam’s high-resolution altitude maps and meteorological data, simulating microclimate features (e.g., wind speed, condensation risks) at installation sites for optimized layout.
• ​Safety and Efficiency in Construction: ​High-voltage gas-insulated switchgear (HV GIS)​​ installations yana amfani da modular techniques to shorten construction timelines in high-altitude areas. Workers yana da altitude sickness monitoring devices to ensure safety.

​III. Abubuwan Da Su Samu​

1. ​Enhanced Reliability​
• ​HV GIS​ equipment insulation compliance rates yana ƙara zuwa 99.5%. At altitudes above 2,000 meters, AC Withstand Voltage (ACWV) and Impulse Withstand Voltage (IWV) yana ƙara zuwa 40% compared to traditional AIS.
• ​High-voltage gas-insulated switchgear (HV GIS)​​ failure rates yana ƙara zuwa 60%, resolving issues such as false classification of rice paddies as submerged vegetation and misidentification of aquaculture zones in other GIS products.
2. ​Economic Benefits​
• ​HV GIS​ footprint reductions of 70% yana ƙara zuwa land costs, while extended maintenance cycles (10 years) yana ƙara zuwa upkeep costs by 50%.
• ​High-voltage gas-insulated switchgear (HV GIS)​​ yana support renewable energy grid integration, boosting annual solar and wind power generation by 15%.
3. ​Environmental and Social Impact​
• ​HV GIS​ yana achieve SF6 leakage rates <0.1%/year, cutting greenhouse gas emissions in line with Vietnam’s National Energy Transition Roadmap.
• ​High-voltage gas-insulated switchgear (HV GIS)​​ yana provide stable power to remote high-altitude regions, improving livelihoods and promoting balanced regional economic development.