Scientific and technological innovation and new life
Specializing in the production of various El transformers, voltage rise and fall transformers, ring transformers, SG three-phase and DG single-phase dry-type transformers, regulated power supplies, special transformers
China Economic Net Baoding On January 17, Tianwei Baobian Electric Co., Ltd. (hereinafter referred to as "Tianwei Baobian") independently developed the PQYS-S-63000kVA/220kV three-phase railway balanced traction transformer with completely independent intellectual property rights. Passed the assessment of all test items including the sudden short-circuit test of the National Transformer Testing Center, and the test results fully met the technical specifications for the electrification design of high-speed railways and the requirements of scientific research and trial production, marking the development of my country's first new 220kV three-phase railway balanced traction transformer success.
Analysis of the advantages and disadvantages of autotransformers, compared with ordinary double-winding transformers, autotransformers have the following advantages: 1) Less consumption of materials and low cost. Because of the amount of silicon steel sheets and copper wires used in the transformer.
Compared with the HVDC transmission mode, the HVDC transmission mode has obvious advantages. Historically, it was only due to technical reasons that AC transmission replaced DC transmission. The main advantages and disadvantages of alternating current and direct current are compared first, so as to explain their respective value in application.
The design process of the transformer includes five steps: 1. Determine the turns ratio of the primary and secondary sides; 2. Determine the number of turns of the primary and secondary sides; 3. Determine the wire diameter of the winding; 4. Determine the number of wire strands of the winding; 5. Calculate the window area.