On the radiated EMI current extraction of dc transmission line based on corona current statistical measurements

On the radiated EMI current extraction of dc transmission line based on corona current statistical measurements

Corona-originated discharge of DC transmission lines is the main reason for the radiated electromagnetic interference (EMI) field in the vicinity of transmission lines. A joint time-frequency analysis technique was proposed to extract the radiated EMI current (excitation current) of DC corona based...

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Veröffentlicht in:AIP advances 2018-05, Vol.8 (5), p.055001-055001-13
Hauptverfasser: Yi, Yong, Chen, Zhengying, Wang, Liming
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Chen, Zhengying
Wang, Liming
description Corona-originated discharge of DC transmission lines is the main reason for the radiated electromagnetic interference (EMI) field in the vicinity of transmission lines. A joint time-frequency analysis technique was proposed to extract the radiated EMI current (excitation current) of DC corona based on corona current statistical measurements. A reduced-scale experimental platform was setup to measure the statistical distributions of current waveform parameters of aluminum conductor steel reinforced. Based on the measured results, the peak value, root-mean-square value and average value with 9 kHz and 200 Hz band-with of 0.5 MHz radiated EMI current were calculated by the technique proposed and validated with conventional excitation function method. Radio interference (RI) was calculated based on the radiated EMI current and a wire-to-plate platform was built for the validity of the RI computation results. The reason for the certain deviation between the computations and measurements was detailed analyzed.
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title On the radiated EMI current extraction of dc transmission line based on corona current statistical measurements
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