330kV three-phase double-winding unexcited voltage regulating power transformer

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• Category: Power Transformer

The 330kV power transformer plays a vital role in regional transmission networks, bridging ultra-high voltage lines and provincial grids. Featuring large capacity, low losses, and stable voltage regulation, it supports industrial clusters and interprovincial energy exchange. Its reliable performance ensures efficient and secure regional power supply. Contact Us

330kV power transformers are widely used in regional transmission networks, especially in areas that serve as a bridge between UHV grids and provincial-level distribution systems. They play a dual role: stepping down ultra-high voltage to regional levels, and redistributing energy efficiently across industrial clusters, cities, and interprovincial grids.

With capacities ranging from hundreds of MVA to over 800MVA, 330kV transformers balance technical performance with operational efficiency. They are commonly equipped with ONAF or OFAF cooling methods, ensuring flexibility in both continuous operation and peak-load conditions. On-load tap changers (OLTC) provide stable voltage regulation without interrupting the power supply, which is crucial for maintaining grid reliability under varying demand.

The design pays special attention to compact structure, noise control, and energy savings. By adopting amorphous alloy cores and low-loss conductors, no-load and load losses are significantly reduced. Combined with modern online monitoring systems, 330kV transformers achieve high efficiency and long service life, supporting the rapid growth of urban power consumption and industrial development.