The Simulation Analysis of Transformer Recovery Voltage by Field and Circuit Method Based on PSO Algorithm

doi:10.11985/2017.12.001

Abstract

Abstract:

The typical oil-paper insulation system model of the distribution transformer is established in the ANSYS simulation environment in the paper. The voltage waveform during the recovery voltage measurement is applied to the model, the characteristics of the E-field distribution at critical time points are analyzed. The principle of recovery voltage is analyzed using lumped circuit. The multi-parameter extended Debye model is resolved by the theoretical formula. On the Matlab/Simulink platform, the Debye parameter model is extended to the lumped parameter circuit. The Simulink-PSO algorithm is used to realize the nonlinear fitting the Debye parameters, and the influence principle of the lumped parameters on the polarization spectrum is analyzed quantitatively. The study found that the field-circuit simulation analysis shows the transient process exists in the recovery voltage measurement. The charge transfer at the interface of oil-paper composite insulation is the main reason for the transient process. It provides the theoretical guidance for the insulation condition monitoring of oil immersed distribution transformer.

Key words: Oil immersed distribution transformer, recovery voltage method, Simulink-PSO combined algorithm, extended Debye model

CLC Number:

TM421

Zhang Shilling. The Simulation Analysis of Transformer Recovery Voltage by Field and Circuit Method Based on PSO Algorithm[J]. Journal of Electrical Engineering, 2017, 12(12): 1-10.

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材料名称	相对介电常数	电阻率/Ω·m
变压器油	2.2	3.588 6e-12
绝缘纸板	4.5	2.273 8e-15
金属部件	1e-10	1e-8

名称	参数	名称	参数
R_g/GΩ	1.75	C_g/NF	35.60
R₁/GΩ	5.41	C₁/NF	27.48
R₂/GΩ	4.36	C₂/NF	67.08
R₃/GΩ	13.78	C₃/NF	85.35