Ardaigh-Voltage Ardaithe Gás-Chosanta Innealtóireachta (HV GIS) Solutions: A Case Study of Vietnam - HV GIS in Challenging Terrains

I. Cúlra an Tionscadail

Tá an t-ainmhíocht in Vítneam an-chomhlinteach, agus sreabhanna i mBeilís agus sa Mheán-Ospach go minic os cionn 1,000 méadar. Tá córais aimsire cruaidhe ag baint leis na réigiúin seo, lena n-áirítear:

• Méadúsholas leanúnach (mheán 95%);
• Athruithe teolaíochta láithreach móra (chun 32K);
• Coróideachas fogha.

Mar gheall ar fhorbairt eacnamaíoch rathúil Vítneam (tá forás GDP mar dhuine de 6.8% á lorg don 2025), tá éileamh ar ghuthrú ag ardú. Is iad na dúshláin príomha:

• Tá an t-eochair uaireachta aonair traidisiúnta (AIS) i réigiúin arda súgartha faoi thráchtaireacht comhshaoil, ag cur isteach ar feidhm íoltóireachta agus ag cothú costais bhainistíochta;
• Tá an rialtas Vítneaimi ag spreagadh tionscadal fuinnimh atá ag athnuachan (mar shampla, solasghearr agus gaoth-ghearr) ag iarraidh uirlisí trasnála agus roinnte guthraí an-ríbhheasúla.

In ainneoin na seach Shruth Ghuthraí Ardvoltaige (HV GIS) — a bhfuil a dearadh comhbhrúite, a ndearann sé a bheith tioncharach ar an gcomhshaoil, agus a chuid carachtaraithe gan bainistíocht a fhágáil ar feadh tréimhsí fada — tá sé tar éis a bheith ina réiteach príomha chun gnéas gníomhaíochta guthraí a nuachóiriú i réigiúin arda súgartha Vítneam. Tá a chuid feidhmeoireachta iontach in comhshaoil cruaidhe ag déanamh dó a bheith ina rogha is fearr chun dúshláin réigiúnacha a réiteach.

II. Réiteach

1. Roghnú Uirlisí agus Ealaín Teicniúil
• Dearadh Coimeádach Comhshaoil: Úsáideann High-voltage gas-insulated switchgear (HV GIS) SF6 gas insulation, rated for 24–252 kV, and adapts to altitudes ≤3,000 meters and temperatures from -40°C to +55°C. Gas density compensation devices are added to offset SF6 insulation strength loss caused by low atmospheric pressure at high altitudes.
• Prevention of Moisture and Sealing: HV GIS integrates multi-layer sealing systems and desiccant adsorption devices to prevent moisture ingress in high-humidity environments, ensuring gas chamber dew points ≤-40°C. Corrosion-resistant coatings (e.g., galvanization) protect against salt fog.
• Material Innovation: High-voltage gas-insulated switchgear (HV GIS) components utilize domestically produced polytetrafluoroethylene (PTFE) nozzle materials with breakdown strength ≥30 kV/mm. Their arc ablation resistance approaches that of imported materials while reducing costs by 30%.
2. Smart Monitoring and Maintenance
• Real-Time Condition Monitoring: HV GIS systems integrate temperature/humidity sensors, pressure sensors, and partial discharge monitoring modules. Combined with Beidou Positioning System, cloud-based data transmission and anomaly alerts are enabled.
• Predictive Maintenance: For high-voltage gas-insulated switchgear (HV GIS), machine learning analyzes 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 leverages 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 adopt modular techniques to shorten construction timelines in high-altitude areas. Workers are equipped with altitude sickness monitoring devices to ensure safety.

III. Achievement

1. Enhanced Reliability
• HV GIS equipment insulation compliance rates improved to 99.5%. At altitudes above 2,000 meters, AC Withstand Voltage (ACWV) and Impulse Withstand Voltage (IWV) increased by 40% compared to traditional AIS.
• High-voltage gas-insulated switchgear (HV GIS) failure rates dropped by 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% save land costs, while extended maintenance cycles (10 years) lower upkeep costs by 50%.
• High-voltage gas-insulated switchgear (HV GIS) supports renewable energy grid integration, boosting annual solar and wind power generation by 15%.
3. Environmental and Social Impact
• HV GIS achieves 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) provides stable power to remote high-altitude regions, improving livelihoods and promoting balanced regional economic development.