<p> 每一回路1km的电阻、电抗和电纳为R<sub>0</sub>=ρ/S=31.5/95=0.33(Ω/km)<br> X<sub>0</sub>=0.1445tg(D<sub>av</sub>/r)+0.0157<br> =0.1445tg[1.26×400/(1.387/2)]+0.0157<br> =0.429(Ω/km)<br> B<sub>0</sub>=[7.58/tg(D<sub>av</sub>/r)]×10<sup>-6</sup><br> =[7.58/tg(1.26×400/(1.387/2))]×10<sup>-6</sup>=2.65×10<sup>-6</sup>(S/km)<br> R=R<sub>0</sub>1/2=0.33×50/2=8.25(Ω)<br> X=X<sub>0</sub>1/2=0.429×50/2=10.7(Ω)<br> Q<sub>c</sub>=U<sup>2</sup>B=35<sup>2</sup>×2.65×10<sup>-4</sup>=0.33(Mvar)<br> 双回路的电阻、电抗、电纳和电容的功率分别为:R=2512、X=10.712、Q<sub>c</sub>=0.33Mvar。</p>