Effects of Conditional Changes on High-Voltage Direct Current Transmission Line Characteristic

Figure 4

Alpha angle of the HVDC transmission line. (a) A 250 kV HVDC transmission line (250 kV, 500 kVA, 2 kA), (b) a 450 V HVDC transmission line (450 V, 750 VA, 1.667 A), and (c) a 500 V HVDC transmission line (500 V, 750 VA, 1.5 A).

(a)

(b)

(c)