The rapid development of dry-type transformer market in China

In 2012, the output of dry-type transformers in China was 185,710,900 KVA, which is one of the countries with the largest production and sales volume of dry-type transformers in the world. Dry-type transformers are now widely used in almost all electrical systems such as power plants, factories, and hospitals.

In the past 20 years, with the development of the world economy, dry changes have achieved rapid development in the world. Especially in distribution transformers, the proportion of dry change has been increasing. According to statistics, in developed countries such as Europe and the United States , It has accounted for 40-50% of distribution.

In China, dry-type transformers currently account for about 15%-20% of the average in large and medium-sized cities, but they account for about 50% of the total in Beijing, Shanghai, Guangzhou, Shenzhen, and other cities, but they are in rural distribution networks in China. The use of dry-type transformers is relatively small. Therefore, dry-type transformers generally account for 10-15% of transformer applications.

Compared with developed countries, the market share of dry change in China is still relatively low, but by virtue of its excellent application conditions and performance, the proportion of dry-type transformers in the total output of transformers will increase to some extent. It is estimated that by 2020, the market share of dry change in China will reach about 50%, which is equal to the ratio of the developed countries. Therefore, there is still a long way to go in the dry change market in China.

China's dry-shifting technology has reached the world's advanced level. Forward-looking Industry Research Institute's "2013-2017 China Dry-type Transformer Industry Market Demand Forecasting and Investment Strategic Planning Analysis Report" shows that there are four types of dry-change structure: epoxy resin casting, plus filling pouring , wrapping, dipping. At present, Europe and the United States widely use open ventilated class H dry-type transformers, which are based on the impregnation type and have absorbed the characteristics of the wrapped-type structure and developed using the Nomex paper. The new class H dry-drying is developed due to the high selling price in our country. Not yet promoted.

At present, the domestic dry-type distribution transformers with the largest capacity through short-circuit tests are 2500kVA and 10/0.4kV; the dry-type power transformers with the largest capacity through short-circuit tests are 16000kVA and 35/10kV.

In 2012, the output of dry-type transformers in China was 185,710,900 KVA, which is one of the countries with the largest production and sales volume of dry-type transformers in the world. Dry-type transformers are now widely used in almost all electrical systems such as power plants, factories, and hospitals. With the promotion and application of SC(B)9 series with low noise (noise control below 2500kVA has been controlled within 50dB) and energy saving (with no loss of no-load loss up to 25%), the performance indicators and manufacturing of dry-type transformers in China have been achieved. Technology has reached the world advanced level.