42 ms·
> The required converter stations are expensive and have limited overload capacity. At smaller transmission distances, the losses in the converter stations may
by distortedsignal 5y ago
> The required converter stations are expensive and have limited overload capacity. At smaller transmission distances, the losses in the converter stations may be bigger than in an AC transmission line for the same distance. The cost of the converters may not be offset by reductions in line construction cost and lower line loss.
https://en.wikipedia.org/wiki/High-voltage_direct_current#Disadvantages https://en.wikipedia.org/wiki/High-voltage_direct_current#Di...
Not to mention that circuit breakers are harder in DC.
- dhdc 5y ago> Not to mention that circuit breakers are harder in DC. [Citation needed]
- elihu 5y agoI can believe this is true. It's easier to make reliable AC switches because whatever arcing you get is self-extinguishing because the voltage passes zero 120 times a second. With DC, if you get an arc it'll just keep going as long as conditions allow. That means if you use a designed-for-AC switch in a DC application with the same voltage, it's likely to destroy itself sooner or later. (Apparently this is one of the reasons why cars stick with 12V for accessories, because if they used higher voltages the electrical switches would be more expensive and less reliable.) I don't know how this is normally overcome. In a lot of cases, the solution might just be "use a fuse instead".
- distortedsignal 5y agohttps://en.wikipedia.org/wiki/High-voltage_direct_current#High-voltage_DC_circuit_breaker https://en.wikipedia.org/wiki/High-voltage_direct_current#Hi...