Fault Detection in AC Transmission System Using Multiple Signal Classification Technique

This paper presents the classification between permanent fault and transient fault by using multiple signal classification (MUSIC) technique for AC transmission systems. The time–frequency domain has often been exploited to analyze the signals with fast-changing spectral contents in MUSIC technique. By this, we classify the number of peaks from the spectral. If number of peak is one in the detection range, then this is the case of permanent fault and if more than one, then this is the case of transient fault. One of the most important methods that guarantee the safety and stability of power system is auto-reclosure. The signal which we mainly use is music signal. MATLAB/SIMULINK platform is used to calculate the power spectrums.