500kV 360MVA Oil-immersed Power Transformer
The 360MVA/500kV power transformer is a high-capacity, oil-immersed auto-transformer designed for ultra-high voltage grids. Featuring advanced OLTC technologyand a forced-oil air cooling system, it delivers low energy loss, exceptional stability, and superior thermal efficiency, making it the perfect solution for modern substations and large-scale power plants.
Description
Ultra-High Voltage, High-Capacity Power Transmission:
◦ Specifically designed for 500kV ultra-high voltage (UHV) main grids, boasting a massive 360MVA capacity.
◦ Ideally suited for grid connections at large power plants and as a backbone transmission hub for long-distance, inter-regional power transfer.
• Advanced Auto-transformer and Three-Winding Design:
◦ Utilizes an auto-transformer, three-winding configuration to significantly optimize energy conversion efficiency between high-voltage and medium-voltage windings.
◦ Effectively reduces the volume of core silicon steel sheets and winding copper, substantially lowering equipment weight and procurement costs.
• Low Loss, Low Noise, and Long Service Life:
◦ The core employs high-permeability, low-loss cold-rolled grain-oriented silicon steel sheets, drastically reducing no-load losses (iron losses).
◦ Advanced leak-proof integral welding technology and structural optimization via simulation effectively suppress electromagnetic vibration, minimizing operational noise.
• Intelligent Forced-Oil Cooling System (Efficient ODAF/ONAF Cooling):
◦ Equipped with a forced-oil circulation and air-cooling (ODAF/ONAF) system, delivering exceptional heat dissipation performance.
◦ Maintains stable core temperature rise during full-load or sudden overload operations, thereby extending the service life of the insulation.
• Fully Automatic On-Load Tap Changer (OLTC) System:
◦ Features a highly reliable On-Load Tap Changer (OLTC) capable of automatically and steplessly stabilizing grid voltage without interrupting the load.
◦ Greatly enhances power supply quality and system stability, particularly at the grid’s edge or in areas with voltage fluctuations.
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