Parameter Identification of Mixed Polarization Equivalent Model of Oil-paper Insulation Based on Frequency Domain Spectroscopy

2018 International Conference on Civil, Architecture and Disaster Prevention

土木建筑工程

Ye, Rong^1 ; Cai, Jinding^1 ; Chen, Qunjing^1

College of Electrical Engineering and Automation, Fuzhou University, Fuzhou, Fujian

350108, China^1

关键词: Artificial intelligence algorithms;    Calculation results;    Dielectric spectra;    Frequency domain spectroscopy;    Identification method;    Objective functions;    Oil paper insulation;    Parameter calculation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/218/1/012067/pdf
DOI  :  10.1088/1755-1315/218/1/012067

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

Based on the extended Debye model, the interface polarization branch is introduced to make the oil-paper insulation mixed polarization equivalent model more suitable for the actual polarization process. The mixed polarization equivalent model parameter identification method using frequency domain dielectric spectrum is studied. Firstly, the relationship between the frequency domain spectrum and the circuit parameters is derived based on the mixed polarization equivalent circuit. Secondly, the objective function of the equations for solving the multivariate parameters is established, and the artificial intelligence algorithm is used to solve the parameters. Finally, the method is used to verify the identification of the method. Feasibility and accuracy of mixed polarization equivalent model parameters. The calculation results show that the mixed equivalent model considering interface polarization can more accurately reflect the relaxation process of oil-paper insulation. Compared with the time domain dielectric spectrum parameter identification method, the identification method based on frequency domain dielectric spectrum has the advantages of simple solving process and accurate and reliable parameter calculation results.