4.dc transmission of active power and reactive power consumption can be controlled by the control system, in order to improve the operation ability of the AC system. 5.HVDC can be easily built and expanded in stages. 6. Both the active power sent and the reactive power consumed by THE DC...
the DC voltage is inverted to AC at the receiving end, for distribution purposes. Thus, the conversion and inversion equipment are also needed at the two ends of the line. HVDC transmission is economical only for long distance transmission lines having a length more than 600...