SINGLE POST

DSP-based approach to generating computer model of impulse noise using kernel data sequence

In this paper, we present a new computer model to simulate the impulse-type noise that appears in bursts on a highvoltage (HV) power-line during transient and emergency situations. The computer model is designed for investigations of the effects of impulse noise on communication channels implemented over a HV power-line. The simulation process relies on an authentic record of measured noise whose modified replicas we use to compose a train of short-time impulses evenly distributed in time.

The recorded noise sequence is referred to as a kernel data sequence over which we apply digitalsignal processing (DSP) techniques to randomize its length and its amplitudes. It is achieved that noise impulses produced by the simulator retain the sharp front-ends and spectral properties of the original noise. A variable digital filter is implemented for examining the influences of impulse noise on communication channels. Performances of simulated noise have been compared with those of measured noise published in CIGRÉ, IEEE and IEC documents. Comparisons demonstrate a good agreement between the characteristics of measured and simulated noise.