In case of HVDC system, there is
A dc line carries
Due to requirement of less number of conductors, a dc line carries more power than a ac line, (losses of the line reduces in HVDC).
HVDC transmission is preferred to EHV AC because
HVDC transmission is more reliable than EHV AC because it uses ground or sea return and therefore, in case of fault on a line it can still be used to supply power with the help of healthy lines.
Back-to-back HVDC is used to
HVDC transmission needs
In HVDC system a converter acts as a rectifier when the firing angle α has a value
The capital cost on a HVDC converter is
In a dc transmision
As operating frequency, f = 0 therefore, there is no effect of XL and XC.
As compared to ac transmission dc transmission is free from
Which of the following is/are correctly matched?