PIONEERING THE APPLICATION OF GREEN TECHNOLOGIES IN VIETNAM’S POWER INDUSTRY
.png)
Pioneering the application of green technologies in the power sector at the 110kV Van Giang Substation
The two deployed products include: a 110kV SF₆-free circuit breaker manufactured by Siemens, and a distribution transformer using natural ester (biodegradable) insulating oil manufactured by Hitachi Vietnam.
The 110kV SF₆-free circuit breaker replaces traditional breakers that use SF₆—one of the most potent greenhouse gases, with a global warming potential over 20,000 times greater than CO₂. The new breaker uses an environmentally benign gas mixture that meets international IEC standards, reducing emissions while ensuring high reliability, safety, and long operational life.
.png)
.png)
110kV SF₆-free circuit breaker manufactured by Siemens
| Criteria | Siemens 110kV SF₆-free Breaker | Traditional SF₆ Breaker |
|---|---|---|
| Applicable Standards | IEC 62271-100, IEC 62271-110 | IEC 62271-100, IEC 62271-110 |
| Number of operations at rated current (3,150 A) | 10,000 | 6,000 |
| Operating temperature | −60 to +55°C | −30 to +55°C |
| Insulating medium | SF₆-free gas mixture (CO₂ + O₂ + N₂, eco-friendly) | SF₆ gas |
| Fluorinated greenhouse gas mass / CO₂ equivalent | 0 kg / 0 tons | 6.4 kg / 150 tons |
| Environmental impact | Reduces greenhouse gas emissions | High emissions if leakage occurs |
In parallel, the distribution transformer using natural ester insulating oil (biodegradable oil) produced by Hitachi Vietnam replaces conventional mineral-oil transformers. Natural ester oil offers >95% biodegradability, is non-toxic, significantly reduces fire hazards, and is more environmentally friendly while improving insulation longevity.
.png)
.png)
Distribution transformer using biodegradable natural ester oil, manufactured by Hitachi Vietnam
| Criteria | Natural Ester Oil | Conventional Transformer Oil | Remarks / Key Advantages |
|---|---|---|---|
| Standards & Operation | ASTM D6871, IEC 62770; IEEE C57.147; UL Classified; ASTM D92 | IEC 60296 | Meets top-tier global safety and performance standards |
| Fire Safety | Flash point ~330°C, fire point ~360°C (very high) | Flash point ~155°C, fire point ~170°C | FR3 far safer; classified as “Less-flammable fluid” |
| Insulation life & paper protection | Excellent moisture absorption; slows insulation aging | Poor moisture absorption; accelerates paper aging | FR3 extends insulation life by 2–3× |
| Environmental impact | >95% biodegradable, non-toxic | Slow degradation; soil/water pollution risk | FR3 strongly aligned with sustainability and Net Zero goals |
| Viscosity & temperature performance | Higher viscosity in low temps; strong thermal performance | Better low-temp flow but limited high-temp stability | FR3 well-suited for tropical climates |
The deployment of these technologies aligns with Vietnam’s sustainable energy development strategy and contributes to fulfilling the country’s commitment to net-zero emissions by 2050, as announced by the Prime Minister at COP26. The introduction of SF₆-free equipment and biodegradable insulating oil marks a clear step forward in efforts to reduce greenhouse gas emissions, protect the environment, and modernize national power infrastructure.
.png)
.png)
.png)
.png)
Pioneering the application of green technologies in the power sector at the 110kV Van Giang Substation
With more than 20 years of experience as an EPC contractor in the power sector, AIT Group continues to affirm its pioneering role in adopting modern technologies that enhance investment efficiency, protect the environment, and promote green energy transition in Vietnam. The two devices installed and tested at the 110kV Van Giang Substation—with approval EVNNPC—stand as strong evidence of effective collaboration among all parties in applying new technologies toward sustainable development of Vietnam’s power industry.
Aadminadmin
Hello. Please leave a comment, we will respond soon.