Design of Power Transformer Vibration Absorber Based on Magnetorheological Grease

doi:10.3969/j.issn.1008-0198.2023.03.013

Abstract

Abstract: Noise may be generated during the operation of power transformer, and the installation of damping device is one of the effective ways to control the noise. Aiming at the disadvantage of the existing damping device of power transformer, a new type of magnetorheological grease damper is designed. Firstly, the mechanism of transformer vibration noise and the mechanical properties of magnetorheological grease are analyzed, and the feasibility of vibration reduction is demonstrated. Then the structure of the Vibration absorber is designed and the magnetic field simulation is carried out. The results show that the designed electromagnetic field can meet the regulation requirements of magnetorheological grease. The vibration absorber damping can be adjusted by changing the coil current,the adaptive fuzzy PID control algorithm is designed finally,adjust the output current according to the vibration signal collected by the acceleration sensor to obtain better vibration reduction effect.The simulation results show that the algorithm has low overshoot and good robustness. This paper provides a feasible variable damping scheme for noise control of power transformer.

Key words: transformer, vibration noise, magnetorheological grease, vibration absorber, fuzzy PID

CLC Number:

TM403

LU Xinsheng, XU Sheng, GE Chen, REN Jie. Design of Power Transformer Vibration Absorber Based on Magnetorheological Grease[J]. Hunan Electric Power, 2023, 43(3): 82-87.

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