On techniques for the localisation of multiple distortion sources in three‐phase networks: Time domain verification

Frequency domain network modelling techniques have shown that the localisation of steady‐state distortion sources by monitoring the direction of active power in the harmonic components can not be accomplished through continuous single‐point measurements in the presence of multiple distortion sources. Because frequency domain models of line commutated AC/DC converters could so easily be susceptible to error, the same analysis in the time domain will enhance the credibility of the findings. A time‐domain approach has therefore been adopted by generating the equivalent power system data through repeated ATP (alternative transients programme) simulations and interpreting the resulting trends by means of a Mathcad package. The results obtained confirm the previous findings.