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- W2371161933 abstract "A dielectric loss digital algorithm based on parallel or series equivalent circuit model of resistance and capacitance is proposed,and the algorithm still has high accuracy in non-integer periods sampling.In the paper,the voltage and leakage current signal of capacitive electrical equipment insulation are measured,and those signal harmonics are obtained by the Fourier algorithm or the windowing and interpolation Fourier algorithm and modified ideal sampling frequency method. The leakage current signal is fitted by the parallel/series equivalent circuit model and the voltage signal.In the meantime,variance of the model is transformed to make the model turn from a non-linear least square model into a linear least square model,which has less calculation work,then the resistance and capacitance of the circuit model is calculated directly.After then,the dielectric loss and the fitted leakage current signal of the capacitive equipment are obtained.The above algorithms are used to process the simulated and real measured signals,and the result indicates that the leakage current signal can be fitted well by parallel or series equivalent circuit model,and the former has higher fitting accuracy;the dielectric loss calculated by the proposed algorithms is accurate in different signal frequencies,in the meantime the algorithm can give equivalent resistance and capacitance." @default.
- W2371161933 created "2016-06-24" @default.
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- W2371161933 date "2011-01-01" @default.
- W2371161933 modified "2023-09-25" @default.
- W2371161933 title "Dielectric loss digital algorithm based on equivalent circuit model" @default.
- W2371161933 hasPublicationYear "2011" @default.
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