The Vibration Research Of The New Converter Transformer Winding

At present in our country electric power industry,to meet the coordinated development of resources and environment,has become an issue that must be considered.Because of the geographical distribution of energy in our country is not balanced,the user load and energy in different regions,which means that with long distance,large capacity DC transmission technology transportation advantage will occupy a very important position in power network in china.In the DC transmission system,its main transformer is HVDC converter transformer,the transformer vibration in the operation of HVDC transmission system in the process of noise in particular,to trigger change part of the damaged insulation transformer,resulting in reduced service life of the converter transformer,noise pollution at the same time it produced to the serious environmental impact.In view of this phenomenon,how to take the corresponding suppression measures are effective,vibration and noise suppression of converter transformers,must solve the problem now becomes.This paper is on the new inductive filtering by Professor Luo Longfu of Hunan University and the team of research and development of converter transformer vibration simulation and experimental test,study on the characteristics of transformer noise has to be whether new change with inductive filtering winding.New filtering suppression technology will filter the nearest governance,self coupling compensation and harmonic shielding rectifier transformer with winding layout unique,filtering mode is simple,the effect is obvious,opens up a new idea of filtering technology in power system.This paper discussed the new converter transformer is carried out based on this new filtering technology based on.This paper introduces the research status quo of DC from the bookstore and transformer vibration to start,step by step,the basic principle of inductive filtering model of converter transformer.Through the modal analysis theory and finite element analysis,the new converter transformer winding model analysis is carried out,under the environment of AN SYS finite element model is established to carry out the winding vibration,simulation research of winding vibration in harmonic condition and under DC bias conditions,summarizes the induction filtering technique to solve the harmonic is the problems of the traditional converter transformer exist in the operation process,has the obvious inhibitory action to the transformer vibration.The main work of the research is to provide a theoretical foundation for the engineering application of inductive filtering converter transformer,has great theoretical value and realistic meaning?...