The very first power transformer within the world is 1400VA in capacity, 120/72V in voltage ratio and 40Hz in frequency. The kinds of China power transformer has created rapidly. The quantity of metal-enclosed switchgear
manufacture plus the excellent of production and test facility bring lots of leaps in improvement too. As a way to meet the demand and need to have of market, a lot of energy transformers manufactures have regularly enhanced their merchandise structure and overall performance combining sophisticated technologies and equipment in current years. With the application of new technologies, material and approach, it has appeared quite a few new type solutions in distinct structure, like new S9 series energy transformer, completely enclosed transformer, resin insulated or OVDT transformer, amorphous crystalline alloy iron core transformer and combined transformer. Because of the demands in future development, transformer substation
ought to combine with new technology and develops to become the a single of substantial capacity, higher voltage and higher reliability. The alternating voltage level develops from 220kV, 330kV, 500kV and 750kV to 1000kV. The direct voltage adjustments ±500kV to be in ±600kV,±800kV and ±1000kV. Moreover, the capacity alterations from three-phase 120MVA-840MVA even into 900MVA and from one-phase 250MVA-400MVA even into 533MVA. These transformers are mainly used in large-scale energy station or energy transmission, so that its reliability becomes very crucial. Thus, energy transformers manufacture adopts a lot of measures to improve the rationality of functionality and distribution in electricity, magnetic medium, heat and energy. regulator transformer
must pay attention to improve its own insulativity, meanwhile, increase its extinction voltage and make its voltage higher than the highest working voltage which is used for a long time. It ought to increase the allowable field strength of insulated materials and develop the technology of control field at the same time. To decrease the effect of field strength on design, increase the allowable field strength on course of action and be in no change in the balance point of your water in oil and paper in operation are so important to the safety and reliable operation of higher voltage power transformer. In addition, it also needs to increase the performance to resist mechanical power, because no matter high voltage power transformer or low voltage transformer, it will be in short circuit during the service life of operation, which will influence the safety and reliability of transformer. With the increasing environmental awareness, the building of power distribution transformer and energy station is limited by the demands of environment protection. People must pay attention to the energy consumption, noise and electromagnetic field which are made by the operation of transformer and electric reactor, for those are also the elements to affect the design of power station, the layout of energy distribution and also the evaluation of environment-protecting. Therefore, the main trend of energy transformer must be in energy-saving, low noise, no leakage and to be in compact variety or assemble sort. The compact sort transformer, especially power distribution transformer, is usually used in cities. The assemble type is used in remote area or the area where is lack in transportation. This kind of assemble transformer on the scene fits to become in priority improvement.