Investigation on the Action of Eddy Current on Tank Vibration Characteristics in Dry-Type Transformer

A New 3D Method for Reactor Core Vibration Based on Silicon Steel Lamination Rules and Application in UHV Shunt Reactors

“…erefore, the two methods are mutually replaceable for the study of small dry reactors. An experiment on the core vibration of a small dry reactor was carried out in reference [3], which verified the 2D method. e difference between the 3D method given here and the 2D method is small for the vibration parameters of the small dry reactor.…”

“…ere are two types of shunt reactor, dry type with small capacity in Figure 1(a) and oil-immersed type with large capacity in Figure 1(b) [3,7]. Core limb and iron yoke are the two main parts of the reactor core.…”

“…Excessive vibration is one of the most common problems in the operation of shunt reactors due to the air gaps in the core limb that provide large inductance [1]. e vibration of the core (iron yoke and core limb) is one of the most important causes of shunt reactor vibration [1][2][3][4][5][6][7][8][9]. e elastic deformation of the core in the magnetic field due to Maxwell force and magnetostriction is considered to be the main reason for shunt reactor core vibration [2].…”

“…e elastic deformation of the core in the magnetic field due to Maxwell force and magnetostriction is considered to be the main reason for shunt reactor core vibration [2]. 2D methods have been widely used to study this [3,8]. In this type of method, the core limb is considered to have the same thickness in the z-direction.…”

“…e 3D anisotropy (in the direction of RD, TD, and LD) has been simplified into 2D (RD and TD) in the 2D method. e 2D method has high accuracy in the study of small dry reactors with cuboid core limbs [3,4]. However, the core limb of many large oil-immersed shunt reactors such as UHV shunt reactors is a cylinder with laminated silicon steel, which is very different from the core limb of a small dry reactor.…”