A power transformer is a kind of stationary electrical equipment. It is a device used to change an AC voltage (current) of a certain value into another voltage (current) of the same frequency or different values. Development of Power Transformers With the sustained, healthy and rapid development of the economy, power demand and investment continue. During the "Eleventh Five-Year Plan" period, the length of transmission lines of 110 kV and above increased by 2.84 million kilometers, the transformation capacity was 1.13 billion kVA, the power load was 227 million kilowatts, and the required power was 1.3 trillion kilowatt hours, which reversed the serious construction of the power grid. The lagging passive situation reduces the situation of power shortage.
The power transformer manufacturing industry is raw materials such as silicon steel sheets, nonferrous metals such as copper and aluminum. The product cost of the power transformer industry is greatly affected by fluctuations in the raw material market. For general power transformers, the cost of raw materials accounts for about 70% -80% of the cost of the product. The larger the size of the power transformer, the higher the proportion of material costs. Among the raw materials for the production of power transformers, the cost of silicon steel sheets is large. About 35%, the proportion of steel and copper and aluminum is about 20%, and the proportion of other raw materials is not large.
The downstream users of the power transformer manufacturing industry mainly include the power supply sector of power systems and other industries that need to build their own power networks (such as petroleum, chemical, mining, metallurgy, railway, transformer manufacturing, etc.). The development status of the power industry will have an impact on the industry. Tremendous influence. Consumption of residential houses also has a greater impact on power transformers. The population is large and the process of urbanization is fast. The demand for residential consumption is increasing and the demand for electricity is increasing day by day. This has placed high requirements on the construction of the power grid and reduced the manufacturing of power transformers. Development of the industry.