Study on the Vibration and Noise Characteristics of the Iron Core in Ultra-high Voltage Shunt Reactor
The iron core in UHV shunt reactor possesses a characteristic structure that the core cake and air gap pads al-ternately are stacked into a structure,thus the operation of its vibration intensity is far more than the same voltage level of the transformer,and problems such as vibration is prone to exceed the standard may occur.The existing calculation methods for UHV shunt reactor core vibration characteristics can not be accurately characterized.Thereby,aiming to study the core vibration mechanism and noise generated by one UHV shunt reactor,this paper combines the magnet-ic-structural-acoustic multi-field coupling analysis,simulates and calculates the Maxwell force and magnetostrictive force on the core,then calculates the noise generated by the vibration of the reactor by using the results of the structural field as a load excitation after the fast Fourier transform,and analyzes the magnetostrictive force and Maxwell force on the vibra-tion of the reactor individually.The effects of magnetostrictive force and Maxwell's force on reactor core vibration are analyzed separately.The results show that the vibration in the middle of the reactor core side yoke is the most intense during the reactor operation,and the noise generated around the reactor is the largest.Comparison of Maxwell's force and magnetostrictive force on the vibration of the reactor core reveals that the vibration of the core is smaller than that without considering the magnetostrictive force,which proves that the two forces affecting the vibration of the reactor core have a mutual attenuation effect.
ultra-high voltage shunt reactormulti-physics field coupling calculationsvibration noisemagnetostrictionMaxwell force
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维普
