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Abstract

Transformers in the power systems are sometimes influenced by the DC bias and produce abnormal vibration or noise. This paper presents a method to simulate the transformer vibration increase due to the DC bias. A three-dimensional finite element model coupling the circuit – magnetic field – mechanical field is established for the simulating. Firstly, the 3D magnetic field in the iron core is calculated through combing the circuit equation and magnetic field equation. Secondly, the magnetostrictive force derived from the magnetic field is used to establish the transient structural force field model, so that the vibration displacement can be calculated. Based on the method, the vibration at different positions of the transformer iron core with different DC bias is investigated. The simulation shows that the vibration of the iron core is quite sensitive to the DC bias. The vibration amplitude significantly increases and the vibration waveform becomes asymmetrical and sharp with the increase of DC current. The odd frequency component, represented by 50 Hz and 150 Hz, appears and grows faster than the 100 Hz and 200 Hz component. The model and the simulation results can be used to guide the structural designing of transformers and promote the fault diagnosis method of transformers based on the vibration signal monitoring.

Keywords

DC bias transformer iron core vibration magnetostrictive finite element method

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References

Boteler

D.H.

Shier

R.M.

Watanabe

and Horita

R.E.

, Effects of geomagnetically induced currents in the BC Hydro 500 kV system, IEEE T Power Deliver 4(1) (1989), 818–823.

Liu

C.M.

Liu

L.G.

and Yang

, Monitoring and Modeling Geomagnetically Induced Currents in Power Grids of China. in: Asia-pacific Power and Energy Engineering Conference, 2009, pp. 1–4.

Liu

C.M.

Liu

L.G.

and Pirjola

, Geomagnetically Induced Currents in the High-Voltage Power Grid in China, IEEE Transactions on Power Delivery 24(4) (2009), 2368–2374.

Zheng

K.D.

Liu

C.M.

and Wan

, Experiment and Research of the Influence of Direct-current Magnetic Bias on Transformer, Jiangsu Electrical Engineering 23 (2004), 1–5,

Liu

L.Y.

and Xie

X.W.

, Analysis of Increase of Noise of 500 kV Transformer, High Voltage Engineering 68(Supplement S11) (2005), 2514–2518.

Moses

A.J.

, Measurement of magnetostriction and vibration with regard to transformer noise, IEEE T Magn 10(2) (1974), 154–156.

Kitagawa

Ishihara

Todaka

and Nakasaka

, Analysis of structural deformation and vibration of a transformer core by using magnetic property of magnetostriction, Electr Eng Jpn 172(1) (2010), 9–26.

Ertl

and Landes

, Investigation of load noise generation of large power transformer by means of coupled 3D FEM analysis, Compel International Journal of Computations and Mathematics in Electrical 26(3) (2007), 788–799.

Wakabayashi

and Enokizono

, Analysis of vector magnetic property and two-dimensional magnetostriction in electrical steel sheets, International Journal of Applied Electromagnetics and Mechanics 44(3) (2014), 317–330.

10.

Ghalamestani

S.G.

Vandevelde

Dirckx

J.J.J.

Guillaume

and Melkebeek

J.A.A.

, Magnetostrictive deformation of a transformer: A comparison between calculation and measurement, International Journal of Applied Electromagnetics and Mechanics 44(44) (2014), 295–299.

11.

Vukosavić

S.N.

and Perić

L.S.

, High-Precision Sensing of DC Bias in AC Grids, IEEE Transactions on Power Delivery 30(3) (2015), 1179–1186.

12.

Pjevalica

Petrovic

Pjevalica

and Teslic

, Experimental Detection of Transformer Excitation Asymmetry through the Analysis of the Magnetizing Current Harmonic Content, Elektronika Ir Elektrotechnika 22(2) (2016), 43–48.

13.

Bai

B.D.

Liu

and Wang

J.Y.

, Simulation and Experimental Research of Transformer Vibration under DC Magnetic Bias, Transactions of China Electrotechnical Society 28(Sup. 2) (2013), 427–433.

14.

Chen

Q.H.

H.B.

and He

J.L.

, Field Monitoring and Analysis on Vibration and Noise of 500 kV Electrical Transformer under DC Current Biasing, High Voltage Apparatus 43(8) (2009), 3591–3597.

15.

Guo

Huang

Tang

and He

W.L.

, Analysis on 500 kV Power Transformer Vibration Under DC Magnetic Biasing, Power System Technology 36(3) (2012), 70–75.

16.

Yang

Liu

Yang

Jadoon

and Zhang

, Analysis of DC bias vibration of transformer core based on electromagnetic force field coupling, International Journal of Applied Electromagnetics and Mechanics 50(2) (2016), 297–309.

17.

Kubiak

and Witczak

, Vibration analysis of small power transformer, Compel International Journal of Computations and Mathematics in Electrical 29(4) (2010), 1116–1124.

18.

Wang

Bai

Liu

and Ma

, Research on Vibration and Noise of Transformers under DC Bias, Transactions of China Electrotechnical Society 30(8) (2015), 56–61.

19.

Wang

J.G.

, K.Mao Duan

Yang

Y.M.

and Ke

L.I.

, Simulation and test of transformer vibration under DC bias, Electric Machines and Control 19(1) (2015), 58–67.

20.

Reyne

Sabonnadiere

J.C.

Coulomb

J.L.

and Brissonneau

, A survey of the main aspects of magnetic forces and mechanical behaviour of ferromagnetic materials under magnetization, IEEE T Magn 23(5) (1987), 3765–3767.

21.

Weiser

Hasenzagl

Booth

and Pfützner

, Mechanisms of noise generation of model transformer cores, J Magn Magn Mater 160(7) (1996), 207–209.

Simulating the vibration increase of the transformer iron core due to the DC bias

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