The Techinical Research Of Urta-voltage Converter Transformer’s Assembly

Rationality economically and applicability in the long-distance HVDC transmission capacity is very significant, since the late 1980s, with our research and development of HVDC achieved rapid increase, has put into operation a plurality of DC power transmission project, for the realization of China’s "west to east" strategic plan, including the construction of our country is actively promoting ± 660kV, ± 800kV, ± 1100kV UHV DC transmission project. As HVDC Project, one of the main equipment converter transformer, it is in the heart of AC and DC mutually transform itself and not directly with each other to convert alternating current and direct current, it must be combined with the converter into the converter unit, to achieve conversion between AC and DC.With the expansion of UHV AC and DC lines, the low-end converter transformer is a mature company structure, but the high-end converter transformer (± 660kV, ± 800kV, ± 1100kV) is a company focused on one transformer product development. High-end converter transformer in the structure and manufacturing process has a very distinctive features, with in the development of UHV transformer 1000kV and low-end production of successful experience, analysis of high-end converter transformer structure particularity, research and a lot of new material new processes, by studying these.characteristics, UHV converter transformer coil winding, the winding assembly, core assembly, active part assembly, leads assembly, final assembly and other processes key processes were studied, general analysis of the special structure of the product a special process the impact of the formation of a reliable production process to ensure high-end converter transformer successfully developed.The accuracy of the production process by experimental verification of reliability, technical protocol data provide strong protection and a reliable basis for the development and production of the company’s follow-up± 1100kV.