Nonlinear Dynamic Analysis of High-Voltage Overhead Transmission Lines

Table 4

Natural vibration frequencies of the transmission line model obtained from FE simulation.

	Calculation equation	First order	Second order	Third order	Fourth order	Fifth order	Sixth order	Seventh order	Eighth order
Out-of-plane vibration frequency (Hz)		0.136	0.272	0.408	0.544	0.68	0.816	0.952	1.088
In-plane symmetric vibration frequency (Hz)		0.346	0.46	0.686	0.954	1.225	1.497	1.769	2.042
In-plane antisymmetric vibration frequency (Hz)		0.27	0.544	0.816	1.088	1.36	1.633	1.91	2.18