Fault Detection Using Harmonic Analysis of Single Terminal DC Current Signal of HVDC Line

摘要

In this paper, the LCC-based HVDC converter using harmonic analysis of single terminal DC current signal of HVDC transmission line has been proposed. The model is simulated and analysed using FFT, after that THD is determined. The HVDC lines are very much economical for long distance, so at the far end distance, fault identification is important for safety of transmission lines. The LCC-based HVDC converter scheme is designed in MATLAB. The results show that proposed method can discriminate the faults. None of the papers has done the THD analysis under fault conditions. In this paper, the factors considering, here, the effect of fault location and fault resistances are taken in account for the reliability, accuracy, and selectivity.