高压电器2012，Vol.48Issue(6)：7-11,17,6.
油纸绝缘结构介质响应电路模型的参数辨识方法研究
Research on the Method of Parameter Identification for Dielectric Response Equivalent Circuit of Oil-paper Insulation
摘要
Abstract
The dielectric response method is an effectively non-destructive testing method for diagnosis oil-paper insulation aging status. Identifying the circuit model of oil-paper insulation is the key to assess aging status using dielectric response method. The extended Debye model is identified by using depolarizing current of oil-paper insulation in this paper, based on the characteristics of the depolarization process of dielectric response. The multi-exponential fitting problem is simplified into a single-exponential fitting problems and the RC time constant is transformed into the slope of straight line in the identify progress by analyzing the characteristics of the depolarization process and the extended Debye model. Finally, an extended Debye model of an 110 kV transformer is identified through its depolarization current curve, using the method proposed in this paper. And a simulation is done in MATLAB .Then the 95.8% coincidence degree of simulation curve with the original curve verifies the correct of this method.关键词
油纸绝缘结构/介质响应/扩展德拜模型/参数辨识Key words
oil-paper insulation/ dielectric response/ extended Debye model/ parameter identification分类
信息技术与安全科学引用本文复制引用
王骞,臧春艳,张明丽..油纸绝缘结构介质响应电路模型的参数辨识方法研究[J].高压电器,2012,48(6):7-11,17,6.基金项目
2010年湖北省高等学校省级教学研究项目(2010053). （2010053）
