News

  From the current development trend of amorphous alloy transformers (referred to as 'amorphous change'), in the future, energy efficiency, energy conservation and consumption reduction will be the main development direction of transformers for a long time. In order to promote the energy-saving performance of distribution transformers, High-grade silicon steel sheets, high-performance domestic amorphous ribbons and new production processes have emerged.

  Ling Jian, a senior expert of Shanghai Zhixin Electric Co., Ltd. (referred to as "Confidential Electric"), said in an interview with China Electric Power News that the main development trends of energy-saving transformers include: high voltage, large capacity and low noise, combined with transformer intelligent controllable The development of monitoring can be carried out, and the development of transformers will become more practical and convenient to manage.

  Amorphous change is more obvious than silicon steel

  “When the transformer is put into operation, its no-load loss will always exist. The amorphous transformer can save a lot of energy consumption compared with the traditional silicon steel transformer every year, and the energy saving effect is obvious.” Ling Jian said in an interview with the China Electric Power News reporter that it is used by the scenery storage project. 1100 kVA amorphous oil is an example. The actual transformer no-load loss is as low as 580 watts, and the no-load current is 0.15% or less. It is subject to the replacement of the S11 transformer. The annual power consumption of a single unit can reach 10,000 kWh. 30,000 yuan can be used to recover excess investment costs in about 4 years.

  There is data showing that the SBH15 type amorphous transformation is more energy efficient than the S11-T type silicon steel volume modulation transformer (referred to as "tonation change"). Taking silicon steel 315 (100) kVA capacity adjustment into an example, when the load ratio > 15.8% (critical load rate) is adjusted to a large capacity, the load ratio is 18%, and the SBH15 type amorphous is changed. The annual operating capacity is 2,525 kWh, and the S11-T type silicon steel has a functional consumption of 5,241 kWh per year. The SBH15 type amorphous can save 2,716 kWh per year.

  When the load rate <15.8% (critical load rate) is switched to a small capacity, the large-capacity amorphous load rate is 15%, and the silicon steel is adjusted to a small capacity load ratio of 47%. SBH15 type amorphous change Each year's operation has a functional consumption of 2,209 kWh. The S11-T-type silicon steel has a functional capacity of 4,686 kWh per year. The SBH15-type amorphous can save energy at 2,477 kWh per year.

  "Amorphous change operation is reliable. The high-definition variable, low-voltage coil lead wire is directly led to the outside of the fuel tank through the high and low-pressure bushings, and the lead contact points are small, so the amorphous variable coil structure and the lead connection mode are simple and reliable, and The crystal is completely sealed and maintenance-free.” Ling Jian told the China Electric Power News reporter that with the gradual increase in the price of silicon steel sheets on the market, the price of amorphous alloy strips is relatively stable, and the price advantage of amorphous alloys is becoming increasingly prominent.
  
  Amorphous change still has room for improvement in terms of energy saving

  "Amorphous change still has room for improvement in energy saving. At present, Confidence Electric is actively researching and developing a new generation of amorphous change - SBH17 type amorphous change. Many other technologies and products of Confidence Electric fill the domestic gap, and some key technologies have reached the international leading position. The level has driven the technological progress of the transformer industry.” Ling Jian said that SBH17 amorphous variable no-load loss and load loss are 10% lower than SBH15, and SBH17 amorphous transformation plan will be introduced to the market in the second half of 2017.

  In fact, through more than ten years of exploration and practice in the field of amorphous transformation, Confidence Electric has mastered the core surface sound absorption and noise reduction technology, iron core two-field temperature control annealing technology, iron core performance production line control and matching system, three-dimensional coil core Amorphous oil change and core manufacturing technology can be directly applied to practical technologies in the field of amorphous resistance to short circuit, low noise, and low energy consumption.

  It is understood that Confidence Electric firstly digested and absorbed the United States General Electric Company (GE) to introduce technology, combined with China's power grid operation and transformation and actual market demand, after the second development and technological innovation, the first buried amorphous, dry High-efficiency products such as amorphous and amorphous alloy three-dimensional coil core transformers have profound technical background.

  Innovation is the driving force behind a company's continuous development

  Confidence Electric has a sound scientific and technological innovation system, system and mechanism guarantee; the market share of independent intellectual property products has increased year by year; leading technology and reputation have become the industry leader; a good innovation environment, a group of high-end talents; flexible production, research and innovation Mechanism to promote the transformation of high-tech achievements. Confidence Electric integrates the research and development strength of universities and research institutes, conducts collaborative research and development, and transforms new technologies. It has already cooperated closely with Shanghai University, Wuhan University and State Grid Energy Institute. Based on the vacuum technology on-load tap-changer developed by Confidence Electric, the current unloaded voltage distribution transformer of the distribution network is upgraded to the on-load automatic voltage regulation and distribution transformer. The product has miniaturization, less maintenance, long life and smooth voltage regulation. Features.

"From the perspective of the bidding of the State Grid in the past three years, the share of amorphous in the production of Confidence Electric has a market share of about 15%. The amorphous alloy core transformer produced by Confidence Electric is used in various industries and major national projects. "Ling Jian combined with market analysis, there are projects such as the Olympic Games, the World Expo, the Zhuhai-Hong Kong Bridge, the Hangzhou Bay Bridge, and the scenery storage.