Wind power combined box transformer is a kind of complete set of substation that manufactures and assembles the supporting booster station for wind power generation in the factory in advance, including booster transformer, high-voltage switch, low-voltage switch and power transformer and other auxiliary equipment arranged in a common shell and passed the type test. The structural product combines the advantages of European transformer and American transformer. It is a new type of booster equipment specially designed for the particularity of wind power. It has the advantages of strong complete set, easy installation, short construction period, low operating cost, high structural strength, strong anti-corrosion performance, environmental protection and energy saving. It is suitable for beaches, deserts and other operating environments with harsh natural conditions. The product has passed the test of Wugao Institute, and the product performance fully meets the requirements of wind power plants.