Fault traveling wave calculation method, device and equipment for overhead line and cable hybrid power transmission line

Abstract

The invention relates to a fault traveling wave calculation method, device and equipment for an overhead line and cable hybrid power transmission line. The fault traveling wave calculation method for the overhead line and cable hybrid power transmission line realizes calculation of fault traveling wave data after the hybrid power transmission line breaks down. According to the fault traveling wave calculation method for the overhead line and cable hybrid power transmission line, the frequency-dependent characteristics of the impedance parameters of the overhead line and the impedance parameters of the cable are considered, so that the calculation precision of the fault traveling wave is effectively improved; the technical problem that an existing fault traveling wave calculation mode of a pure overhead or pure cable power transmission line is not suitable for an overhead line and cable mixed power transmission line is solved. According to the fault traveling wave calculation device for the overhead line and cable hybrid power transmission line, the calculation of fault traveling wave data after the hybrid power transmission line breaks down is realized through an equivalent impedance calculation module, a line mode parameter calculation module, a refraction coefficient calculation module, an equivalent traveling wave amplitude calculation module and a line mode wave voltage calculation module.

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