Description of 220kV Transmission Transformer

A 220kV Transmission Transformer is a key high-voltage power equipment in regional and intercity power grids. It bridges higher-voltage transmission networks (e.g., 500kV) and medium-voltage distribution systems (e.g., 110kV/35kV), stepping down 220kV electricity to lower levels for industrial zones, urban centers, and large-scale infrastructure. Widely deployed in substations and grid interconnection points, it ensures stable power flow over medium-to-long distances (50–200km), supports load balancing, and enhances the reliability of energy distribution across provinces or metropolitan areas.

• 50MVA 220kV Transformer

Features of 220kV Transmission Transformer

• Versatile Voltage Matching: Optimized to connect 220kV grids with lower-voltage systems (110kV/35kV), enabling flexible integration into multi-level power networks. This adaptability makes it suitable for both urban and rural transmission scenarios.

• High Efficiency & Low Loss: Adopts low-loss silicon steel cores and optimized copper windings, reducing no-load and load losses by 15–20% compared to older models. Meets international efficiency standards (e.g., IEC 60076) to minimize energy waste during transmission.

• Robust Structural Design: Built with sealed oil-immersed tanks or advanced dry-type insulation (for indoor use) to resist moisture, dust, and extreme temperatures (-30°C to 45°C). Corrosion-resistant coatings ensure durability in coastal or industrial environments.

• Enhanced Safety Mechanisms: Equipped with pressure relief valves, temperature sensors, and gas relay protection to detect faults like short circuits or oil leaks. On-load tap changers (OLTC) allow voltage adjustment under full load, preventing grid instability.

• Compact & Space-Saving: Designed with reduced footprint for easy installation in urban substations with limited space. Noise-dampening features (e.g., vibration-absorbing bases) comply with environmental regulations in residential areas.

• Smart Grid Integration: Integrated with IoT-enabled monitoring systems to track real-time parameters (oil quality, winding temperature, load current). Supports remote diagnostics and predictive maintenance, reducing downtime.

• High Short-Circuit Withstand Capacity: Reinforced windings and rigid core structures withstand transient short-circuit currents, ensuring operational safety during grid faults and extending service life (typically 30+ years).