110kV Tan Phu Trung Transformer Station and its Critical Role
The 110kV Tan Phu Trung transformer station is a project completed by the Ho Chi Minh City Power Corporation (EVNHCMC) featuring digital substation technology, located in Tan Phu Trung Industrial Park. The powering on of the 4000kVA transformer station at Tan Phu Trung Industrial Park, Cu Chi is expected to further boost the power supply efficiency for the area. Utilizing advanced technology, the project has required an investment of 221 billion VND, with two transformers of 115/23/11kV upgrading the capacity to 63/63/21MVA.
The 110kV Tan Phu Trung transformer station, located in Tan Phu Trung Industrial Park, Cu Chi District, Ho Chi Minh City, plays an essential role in upgrading the grid and ensuring safe power operation for the region. With an initial design scale of 1×63 MVA, the station plans to expand to 2×63 MVA to meet the growing demand for electricity in the future.
- The total investment for this project is around 220 billion VND, marking a significant step forward in substation technology.
- By applying advanced digital technology PROCESS BUS, this station completely replaces traditional secondary circuits with optical cables, facilitating the collection, control, and monitoring of equipment through a digital environment, enhancing reliability and safety in operation.
In terms of smart power distribution, the 110kV transformer station plays a crucial role in supplying high-quality electricity to Tan Phu Trung Industrial Park and surrounding areas such as the North West Urban Area, while also augmenting capacity for Cu Chi District.
Aside from reducing power outage times and fault risks, the station also helps save operational costs with its digital system allowing easy maintenance and repair.
The connection system of the station stands out with 110kV transmission lines connected to the 500kV Cau Bong station, achieving optimal power distribution for Ho Chi Minh City. This is a significant step in modernizing and digitizing the grid, contributing to the capability of managing and operating a smart grid.
In summary, the 110kV Tan Phu Trung transformer station not only optimizes electricity supply but also fosters the adoption of digital electrical solutions to improve efficiency and safety, thereby contributing positively to the economic and social development of the area.

Digital Transformer Technology and its Benefits
The 110kV Tan Phu Trung transformer station project applies digital transformer technology. This is a noteworthy achievement in optimizing operational and management capabilities. Powering on the 4000kVA transformer station at Tan Phu Trung Industrial Park, Cu Chi brings the area closer to modern and automated standards in the power supply system.
Digital transformer stations are reshaping the power sector’s operations through advances in optical technology. Converting all measurement and alarm signals from peripheral devices to the control center via optical cable is one of the standout features, completely replacing traditional copper cables. This ensures efficiency, speed, and minimizes delays thanks to the Process Bus IEC 61850-9-2 standard.
One of the noteworthy advantages of digital transformer stations is the ability to self-monitor devices within the station. With this capability, the system can timely detect any issues or performance degradation, enhancing the reliability of power supply without service interruption. This is further strengthened by the automated redundancy operation, allowing the system to automatically detect and resolve issues without power cuts.
In addition to monitoring capabilities, operational and maintenance optimization is another highlighted benefit. By integrating smart data analysis systems, the station can provide precise maintenance recommendations, reduce costs, and increase equipment lifespan. At the same time, safety is enhanced by using optical transformers without the need for insulating oil, eliminating fire explosion risks and other hazards related to traditional secondary circuits of current transformers.
With the use of compact integrated electronic devices and an optical cable system, the station’s size and area are significantly reduced, alongside accelerated construction and installation times. This optimizes space and speeds up project deployment.
The most critical role of digital transformer stations is in building a smart grid. It forms the foundation for connecting, controlling, and protecting the grid with high accuracy and efficiency, aligning with the strong global trend of digital transformation.
The benefits that digital transformer stations bring not only meet advanced technical standards but also contribute to cost optimization and enhance electricity supply quality, laying the groundwork for a modern and automated power system.

Routine Maintenance at Tan Phu Trung Industrial Park: Importance and Execution
Routine maintenance at Tan Phu Trung Industrial Park, especially at the Giay Me Kong 3P-560kVA transformer station, is evidence of maintaining the stability and safety of the electrical system. This is part of the process of powering the 4000kVA transformer station at Tan Phu Trung Industrial Park, Cu Chi .
In a dynamic industrial environment like Tan Phu Trung Industrial Park, routine maintenance is indispensable in ensuring the safety and efficiency of the industrial park’s electrical system. Managers and businesses need to be aware of the necessity of routine maintenance, particularly when operating transformer stations in the area.
Importance of Routine Maintenance
- Ensuring Operational Safety: Routine maintenance helps timely detect and rectify any potential minor faults, especially on critical equipment such as transformer stations, minimizing accident, fire, and work-related accident risks.
- Prolonging Equipment and Infrastructure Lifespan: Regular maintenance helps maintain the durability of equipment, limiting unwanted breakdowns and reducing long-term repair costs.
- Ensuring Productivity and Production Efficiency: Keeping the system stable through routine maintenance optimizes electricity production and minimizes disruptions.
- Environmental Protection and Regulation Compliance: Inspect the waste treatment system and related infrastructure to preserve the landscape and comply with environmental standards.
Executing Routine Maintenance
- Maintenance Content: Includes testing and checking transformer stations like the Giay Me Kong 3P-560kVA. System security, sanitation, and other facilities are also regularly maintained.
- Frequency of Implementation: Maintenance activities are usually planned annually or quarterly, especially for critical equipment that requires maintenance at least once a year.
- Executing Unit: Executing units will include a team of skilled technicians, ensuring quality through each step of specialized technical processes.
- Planning and Supervision: There needs to be coordinated cooperation between management units and businesses to plan and supervise the maintenance process, optimizing production activities in the area.

With the technical and strategic benefits of investing in digital transformer technology, the project at Tan Phu Trung Industrial Park not only enhances power supply efficiency but also ensures long-term safety and stability.
Contact QuangAnhcons today through hotline: +84 9 1975 8191 for consultation and detailed project information.
QuangAnhcons provides professional power infrastructure construction and maintenance solutions according to the latest technical standards, ensuring the project at Tan Phu Trung Industrial Park operates most efficiently.
Substation budget estimate
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Quotation scope
Applies to one EVN-supplied substation with oil-immersed transformers at 22/0.4 kV (single-phase: 12.7/0.23 kV), with MV metering VTs/CTs supplied by EVN. The estimate includes the selected equipment, installation, earthing, transformer-to-main-breaker connections, design and connection documentation, and coordination of testing and utility acceptance.
Kiosk, integrated steel-pole and indoor substations include MV switchgear and the entered underground cable route. Other outdoor arrangements use the relevant protection configuration. The final diagram must meet the project connection requirements.
Excludes VAT, cables from the substation switchboard to the MSB/loads, live-line work, harmonic reactors, weak-ground treatment or special piling, land and special fire-protection provisions. Underground routes assume normal construction conditions and exclude road drilling and special reinstatement.
Prices are indicative investment budgets. A formal quotation follows site assessment and agreement on the configuration. Electrical selections are preliminary and require design verification before installation.
Capacity range and application conditions
The catalogue defines the enquiry range of this tool, not universal TCVN capacity limits. Single pole-mounted transformers: 15–100 kVA; three-unit banks: 3×15–3×100 kVA. Platform substations: 100–630 kVA. Steel-pole substations: 100–630 kVA; 750/800 kVA require design verification and local approval. Ground-mounted, kiosk and indoor configurations: 50–10,000 kVA. Not every configuration has a package price or the same structural design.
Reference: EVN Decision 1299/QD-EVN dated 3 November 2017, Volume 1, sections 3.3–3.4. Check the current requirements of the responsible utility before implementation. Kiosks must meet manufacturer ratings and testing requirements (IEC 62271-202); indoor and ground-mounted arrangements must meet project layout, ventilation, structural and fire-protection requirements. For multiple transformers, specify the quantity and capacity of each unit.
Developed by QuangAnhcons · © 2026 QuangAnhcons. Code licensed under GPL-2.0-or-later. Standards and manufacturer data belong to their respective owners.
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