Amorphous alloy core distribution transformers, transformer load losses dropped significantly compared to silicon, energy-saving effect is obvious, and its total life cycle cost than traditional integrated transformers, good economic returns, is expected to be in electrical equipment " star. "

Unique charm

Compared with the silicon steel transformers, amorphous alloy transformers more comprehensive advantages.

First, the amorphous alloy transformer load loss is low. Loss of performance in accordance with the level of the transformer model in the code, the amorphous alloy transformer SBH15, SBH16, number 1 for each additional no-load losses by 10% or more. For example, SBH15 S9-type silicon than in amorphous alloy transformer transformer load loss reduced 75%, SBH16 type of amorphous alloy transformer-based amorphous alloy than SBH15 transformer load loss reduced by 25% or so.

Second, although the average price of amorphous alloy transformer above the transformer silicon steel sheet, but the entire life of the overall costs lower. Amorphous alloy transformer used as new materials and new technologies, complex process, so its price higher than the traditional transformer, generally higher than the same model traditional transformer about 30% -55%, compared to the industry with a certain brand and service advantages of ABB companies such as silicon steel transformers, the overall costs are about 20% higher. However, due to its significant energy savings, lower operating costs, so its lower overall cost than traditional transformers. According to many foreign countries amorphous core transformer research from different angles, including the life of the accelerated aging, field operations and special tests to prove: amorphous alloy transformer in the 30-year lifetime, the no-load characteristics of stability, there is no change the operation of load loss situation, a higher reliability.

Prospects

Amorphous advantage in distribution transformers, wide application, but the current number of practical applications in our country is not much, hanging net only about 12 thousand units running, covering Beijing, Shanghai, Chongqing, Jiangsu, Zhejiang, Fujian, Shandong, Shanxi, Guangdong, Henan, Sichuan, Ningxia, Tibet, Liaoning, Jilin and other 20 provinces (autonomous regions). In the long term, large-scale application of its prospects in the country worth the wait.

Surface in terms of policy, with the national energy policy guidance, S7, S8-type high-loss transformer transformer will exit the stage, S9-type transformers will be gradually included in the replacement range, S11 and above level of performance-based Smoothing Reactor will be Distribution of universal application. S11-based load loss between the S9 and amorphous alloy transformer, between the next period of time, S9, S11-and amorphous alloy transformer will also be there, and S11-based and amorphous alloy transformer will be the future of long-term development objectives. Of course, since the production of a large number of manufacturers of transformer silicon steel sheet, cut across the board all the way at once more difficult to estimate also occur.

From a practical perspective, it is the field of rural power distribution transformer 10Kv to incomplete statistics, S9 transformer number of majority, accounting for up to about 83%, S11-type distribution transformers and the proportion is about 15%, SH15 amorphous alloy Fe the proportion of distribution transformer core only 1.2%. Therefore expected in the next stage of the process of rural power grids, the amorphous alloy core distribution transformers there is a big market space.

Technical threshold

Amorphous Distribution Transformer manufacturing process is unique in its technical threshold is difficult to grasp the general enterprise.

First, the amorphous alloy strip of the high quality requirements. Hardness than amorphous silicon alloy strip, while the thickness of very thin, to the cutting and processing the inconvenience. In addition, because the degree of amorphous magnetostrictive alloy by about 10% higher than silicon, amorphous core transformers will result in increased noise, the need for annealing to reduce noise. The annealing treatment is to control the key points of the annealing temperature and time, otherwise it will result in the crystallization of the strip; and, after annealing the amorphous alloy fragile, very sensitive to mechanical stress, in the production process also need to take special tight solid measures.

Secondly, the amorphous alloy core distribution transformer production process is also more complex. Through cutting, punching, folding equipment, fixed shape, detection, magnetic field heat treatment, cooling, coating, and then testing, and many other links. Among them, the magnetic field heat treatment is the core technology, the magnetic field treatment device through the magnetic domain orientation can be reduced after the stress of amorphous alloy strip, and ultimately reduce the loss of the effect of play.

Finally, in the assembly of the Isolation Transformer, the need to open the next iron core yoke seams, set into the winding, and then re-closed joints. The opening of a, to design the experience level and skilled workers, it may cause the core of the gap is too large, increase the reluctance of joints, and ultimately increase the load loss and transformer noise.