Locating Natural Frequency Faults in HVDC Transmission Systems Based on the Rotation-Invariant Technology Signal Parameter Estimation Algorithm and the Total Least Squares Method

Table 8

Comparison of TLS-ESPRIT algorithm and MUSIC algorithm.

Actual point of failure (km)	TLS-ESPRIT (Hz)	Calculated ranging point (km)	Music (Hz)	Calculated ranging point (km)	Increased accuracy (%)
20	3737	20.17	3655	20.62	+22.50
50	1506	50.04	1518	49.65	+12.20
75	1011	74.55	1016	74.19	+4.80
100	752	100.23	765	98.53	+12.40
125	604	124.79	608	123.97	+6.56
150	502	150.15	507	148.66	+7.93