132 kV and Above Power Transformer (With OLTC & Off-Load Tap Changer)
Overview
These high-voltage power transformers are engineered for substations operating at 132 kV and above, delivering precise voltage control and exceptional electrical stability. Equipped with both On-Load Tap Changers (OLTC) and Off-Load Tap Changers, they provide reliable voltage regulation under varying load conditions, ensuring uninterrupted and optimized power distribution.
Applications
Ideal for utility substations, transmission networks, large industrial facilities, grid interconnection points, and infrastructure operating under fluctuating or high load demands.
Design Highlights
Designed with advanced electromagnetic optimization, including precise calculation of internal electric fields, leakage magnetic fields, temperature distribution, and mechanical electromagnetic forces. This ensures minimal losses, stable thermal performance, and enhanced structural strength.
Operational Advantages
These transformers deliver low energy loss, low noise, minimal partial discharge, and strong short-circuit resistance. The robust construction ensures long-term operational reliability even under heavy electrical and environmental stress.
Environmental & Safety Considerations
High-grade insulation materials and optimized cooling systems reduce thermal stress and extend service life. Noise-controlled design supports use in urban or sensitive environments.
Maintenance & Lifespan
Engineered for longevity with high thermal stability, easy access for inspection, and durable materials. OLTC mechanisms are designed for high switching frequency and long service intervals.
Features
- Equipped with both OLTC and Off-Load Tap Changers, enabling flexible voltage regulation during live operation and during shutdown maintenance.
- Designed for system voltages of 132 kV and above, making it suitable for high-voltage transmission and substation environments.
- Internal electric field, leakage magnetic field, temperature distribution, and electromagnetic forces are precisely calculated and optimized for superior performance.
- Offers low energy loss, reducing operational costs and improving grid efficiency.
- Low noise levels make it suitable for urban, industrial, and sensitive installations.
- Extremely low partial discharge, ensuring long-term insulation reliability.
- Strong short-circuit resistance ensures durability and stability under grid disturbances.
- Designed for stable, continuous, and reliable long-term operation in high-demand power systems.
132 kV and Above Three-Phase Combined Power Transformer
Overview
This transformer solution combines three independent single-phase transformers into a unified three-phase system. Designed for high-voltage substations (132 kV and above), it offers exceptional transport flexibility and operational reliability.
Applications
Ideal for remote project sites, mountainous or difficult terrains, regions with transport restrictions, and power stations requiring modular installation.
Design Highlights
Each single-phase unit is independently manufactured and later assembled onsite. Conductors link the units through inter-phase conduits, allowing transformer oil to circulate seamlessly across phases. This modular construction ensures a robust and highly stable three-phase performance.
Operational Advantages
The combined design allows easier transportation, flexible installation, and reduced logistical challenges compared to traditional large three-phase transformers. Despite modular construction, it maintains high electrical performance, mechanical strength, and stable thermal characteristics.
Environmental & Safety Considerations
The compact modular design ensures safe installation even in restricted environments. High-quality insulation and oil circulation pathways maintain optimal temperature and reliability.
Maintenance & Lifespan
Each single-phase unit can be inspected independently, simplifying maintenance and reducing downtime. The modular nature also makes replacement easier if required.
Features
- Constructed from three independent single-phase transformers interconnected to create a complete three-phase system.
- Inter-phase conduits allow oil circulation, ensuring uniform cooling and stable thermal performance across all units.
- Units are assembled onsite, making the solution highly adaptable for locations with restricted access or transportation limitations.
- Easier transportability compared to conventional large three-phase transformers.
- Ideal for remote, mountainous, or difficult-to-access sites, where transporting a full three-phase transformer is not feasible.
- Provides the same high-level electrical performance and reliability expected from large-capacity three-phase transformers.
- Robust mechanical and insulation design supports long-term, stable operation in demanding grid environments.
