Broadband Transmission and Statistical Performance Properties of Overhead High-Voltage Transmission Networks

Figure 5

End-to-end channel attenuation versus frequency for urban case, suburban case, rural case, and “LOS” transmission case when open circuit branch terminations are assumed (for plot clarity reasons, the subchannel frequency spacing is equal to 1 MHz). (a, b) Modal—DM₄—and coupling scheme—WtW¹⁻²—analysis of 150 kV single-circuit, respectively. (c, d) Modal—DM₄—and coupling scheme—WtW¹⁻²—analysis of 275 kV double-circuit, respectively. (e, f) Modal—DM₄—and coupling scheme—WtW¹⁻²—analysis of 400 kV double-circuit, respectively.

(a)

(b)

(c)

(d)

(e)

(f)