油纸绝缘系统混联等效电路及参数辨识的研究

发布时间：2018-05-14 15:07

本文选题：油纸绝缘 + 混联电路　；参考：《仪器仪表学报》2014年09期

【摘要】：目前,油纸绝缘系统老化评估常借助扩展德拜的等效电路模型来辅助分析,但随着油纸绝缘介质的劣化,其内部极化响应多样且复杂,扩展德拜模型无法真实地反映各种介质极化响应特性。因此,本文在扩展德拜模型的基础上做进一步探讨,首次提出一种油纸绝缘系统混联等效电路模型,该模型加入混联支路来表征复杂的界面反应,结合原本的RC串联支路模拟介质本身的极化。同时研究其参数辨识的基础模型和回复电压计算公式。最后,通过实际测量分析和对比,证实了本文提出的混联电路具有一定的实用性,且能更好地表征油纸绝缘介质极化响应特性。因此,论文提出的油纸绝缘混联等效电路模型为准确评估油纸绝缘老化状态提供一种可靠有力的分析手段,具有一定的参考价值。
[Abstract]:At present, the aging assessment of oil-paper insulation system is often aided by the equivalent circuit model of extended Debye, but with the deterioration of oil-paper insulation medium, the internal polarization response is diverse and complex. The extended Debye model can not truly reflect the polarization response of various media. Therefore, based on the extended Debye model, a hybrid equivalent circuit model of oil-paper insulation system is proposed for the first time, in which a hybrid branch is added to characterize the complex interfacial reaction. Combining the original RC series branch to simulate the polarization of the medium itself. At the same time, the basic model of parameter identification and the calculation formula of recovery voltage are studied. Finally, through the analysis and comparison of actual measurements, it is proved that the hybrid circuit proposed in this paper has certain practicability and can better characterize the polarization response of oil-paper insulating dielectric. Therefore, the equivalent circuit model of oil-paper insulation presented in this paper provides a reliable and powerful analysis method for accurately evaluating the aging state of oil-paper insulation, and has certain reference value.
【作者单位】：福州大学电气工程与自动化学院;
【基金】：国家自然科学基金(61174117)资助项目
【分类号】：TM41

【相似文献】