| 摘要 |
It has been determined that unique discharge signature waveform shapes are associated with the corona discharges in the components of the power separation filters of repeaters and equalizers. These signature waveform shapes, present across the repeater or equalizer terminals, can be measured and identified by artificially contaminating and inducing corona discharges in the high voltage components. A discharge signal subsequently generated in response to a corona discharge across a high voltage component of a repeater or equalizer of a similar type will have the same shape as one of the signature waveforms. Thus, a corona discharge from a repeater or equalizer under test can be located by comparing its discharge signal with the catalog of signature waveforms. In the embodiment of the invention disclosed herein, the relationship between the spectral energies of the discharge signal at two predetermined frequencies is compared with the relationship between the spectral energies of the signature waveforms at these same frequencies. From such a comparison, the shape of the frequency spectrum of the discharge signal can be determined and thus the signature waveform it most closely approximates. The source of the corona discharge is thence readily identifiable.
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