Research On Crash Characteristics Of On-load Tap-changer Contact System

The tap changer is a device that needs frequent operation in the transformer.The voltage regulation function is realized through the frequent switching of the contact system.With the continuous voltage regulation action of the transformer,the defect rate and failure rate of the device gradually increase,which is very important for the power system.Safe operation brings certain hidden dangers.This paper takes the CM type on-load tap-changer as the research object,based on ADAMS dynamics simulation and ANSYS finite element simulation,to carry out the research on the contact collision characteristics,which has certain engineering significance to ensure the safe and reliable operation of the transformer.This article first introduces the contact system and clarifies that the contact system plays a vital role in the performance of the on-load tap-changer.The general theorem of dynamics of collision motion is studied,and a modeling scheme of the contact system of the on-load tap-changer is proposed.Secondly,analyze the research platform,mainly including expounding the collision analysis theory of ADAMS software and ANSYS software,and setting up a test platform.Then,extract the single-group arc contact model in the contact system as the research object,use the collision speed as the reference quantity,analyze the sensitivity of the collision parameters and material parameters,and use the single factor parameter identification method to clarify the value criteria of the collision parameters..Finally,the structural principle of the switching part of the arc contact in the contact system is analyzed,the collision parameter value criterion is introduced to establish the contact system dynamic model,and the time domain and frequency domain characteristics analysis of the simulation results and test results are carried out to verify The accuracy of the simulation results obtained the collision characteristics of the on-load tap-changer contact system.This paper uses ADAMS software and ANSYS software to explore the method of accurately modeling the on-load tap-changer,obtains the collision characteristics of the on-load tap-changer contact system,and promotes the development of the virtual prototype technology of the on-load tap-changer.