Amorphous alloy distribution transformer

　　Amorphous alloy distribution transformers are low-loss, high-efficiency power transformers that utilize iron-based amorphous metallic alloys as their iron cores. They possess the following key technical characteristics and application values:

　　Material Properties and Loss Advantages

　　The amorphous alloy iron cores are manufactured using ultra-rapid quenching and solidification technology, resulting in a disordered atomic structure without long-range order. This facilitates easier magnetization and demagnetization processes compared to traditional silicon steel sheets.

　　The no-load loss is reduced by 70%-80% compared to traditional silicon steel sheet transformers, with no-load current decreasing by approximately 85%, significantly enhancing energy utilization efficiency.

　　Structural Design Features

　　They adopt a three-phase five-limb core structure composed of four independent core frames arranged in parallel. Each phase winding is wound around two magnetically independent limbs, effectively eliminating the impact of third harmonic magnetic fluxes.

　　The iron cores require annealing treatment to optimize their low-loss characteristics, with a stacking factor ranging from 82%-86%. The fully sealed structure enables maintenance-free operation.

　　Performance Parameters and Application Scenarios

　　Their rated capacities span from 30kVA to 2500kVA, with voltage levels suitable for 10kV and below distribution systems, utilizing off-circuit tap-changing technology.

　　They are particularly well-suited for rural power grids and developing regions with large diurnal load variations and low annual utilization hours, achieving significant energy-saving effects through reduced no-load losses.

　　Environmental and Economic Benefits

　　The annual energy savings are substantial. For example, an 800kVA transformer can reduce annual energy losses by approximately 9198 kW·h.

　　The fully sealed structure prevents oil oxidation, extends service life, reduces maintenance costs, and mitigates greenhouse gas emissions such as carbon dioxide.

　　Technical Challenges and Improvement Directions

　　Amorphous alloy materials exhibit high hardness and thin thickness, making them sensitive to mechanical stress. Optimizing the cutting process and structural design is necessary to minimize losses in the core stacking factor.

　　Future efforts should focus on further enhancing material performance and improving manufacturing processes to expand their application scope.