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中文简体As the global energy structure accelerates its transformation to renewable energy, the performance and efficiency of transformers, the core components of power equipment, are facing higher requirements. In this context, Amorphous Alloy Dry Type Transformers, AADTT, are becoming an ideal choice for clean energy systems such as wind power and photovoltaics due to their breakthrough material properties and environmental advantages.
Technological breakthrough: Amorphous alloy materials rewrite the rules of energy efficiency
The traditional transformer core is made of silicon steel sheets, which will produce significant hysteresis loss and eddy current loss in the alternating magnetic field. The atomic arrangement of amorphous alloy materials (Amorphous Metal) is disordered, and its magnetization and demagnetization speed is more than 10 times faster than that of silicon steel, which can reduce no-load losses by 60%-80%. According to the data of the US Department of Energy, if all transformers in the world are replaced with amorphous alloy materials, 130 million tons of carbon dioxide emissions can be reduced each year.
Amorphous alloy dry-type transformers combine this material advantage with dry technology: no insulating oil is required, and they are fireproof, explosion-proof, and maintenance-free. They are especially suitable for distributed energy scenarios that require strict safety and environmental protection. Its typical no-load loss is only 0.15W/kg, which is 40% lower than that of traditional dry-type transformers. Under intermittent load conditions of renewable energy systems, the efficiency improvement over the entire life cycle is particularly significant.
Key adaptability of renewable energy systems
Dealing with fluctuating loads
The output power of photovoltaic and wind power fluctuates violently with the weather, and the efficiency of traditional oil-immersed transformers drops sharply at low loads. Amorphous alloy dry-type transformers can effectively alleviate the problem of "wind and light abandonment" with their wide high-efficiency range (efficiency >98% within a load rate of 20%-100%). For example, measured data from a wind farm in northwest China showed that after replacing AADTT, the annual power loss was reduced by 22%, equivalent to absorbing 3.6GWh more green electricity.
Adapting to harsh environments
Offshore wind power, desert photovoltaics and other projects need to face extreme conditions such as high salt fog and sand and dust. Amorphous alloy dry-type transformers use epoxy resin vacuum casting technology, with a protection level of IP65, no oil leakage risk, and operation and maintenance costs reduced by more than 50%. An offshore wind farm in the North Sea of Europe has continuously operated AADTT for more than 50,000 hours with zero failure rate.
Compatible with smart grid requirements
The fast magnetic response characteristics of amorphous alloy materials can improve the transformer's tolerance to grid harmonics, voltage surges and other problems. Combined with built-in temperature and vibration sensors, AADTT can upload operating data in real time to help build a "digital twin grid".
Economic and policy dual-wheel drive
Although the initial purchase cost of amorphous alloy dry-type transformers is 15%-20% higher than that of silicon steel transformers, their ultra-low no-load losses can quickly recover investment in renewable energy scenarios. Taking a 2MVA transformer as an example, the annual no-load power saving is 12,000 kWh. Calculated at industrial electricity prices, the investment payback period is only 3-5 years.
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