基于粒子群算法的变压器油纸绝缘系统回复电压场路模拟研究

doi:10.11985/2017.12.001

摘要/Abstract

摘要：

本文在ANSYS仿真计算环境下建立了配电变压器典型油纸绝缘系统模型,施加回复电压测量过程中的电压波形,分析了其在关键时间点的电场分布特征。应用集总电路分析了回复电压的产生原理,通过理论公式解析了多参数扩展德拜模型,并在Matlab/Simulink平台上将德拜参数模型推广至多支路集总参数电路。提出Simulink-PSO联合算法实现了德拜参数的非线性拟合,定量分析了集总参数对极化谱的影响规律。研究表明：场-路模拟分析发现回复电压测量中存在暂态变化过程,且油纸复合绝缘界面处电荷迁移是状态参量存在暂态过程的主要原因,为油浸式配电变压器绝缘状态监测提供了一定的理论指导。

关键词: 油浸式配电变压器, 回复电压法, Simulink-PSO联合算法, 扩展德拜模型

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

中图分类号:

TM421

张施令. 基于粒子群算法的变压器油纸绝缘系统回复电压场路模拟研究[J]. 电气工程学报, 2017, 12(12): 1-10.

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