0
D.C. high-voltage transmission is used over long distances as they have less losses (e.g. undersea cables, because of the proximity of the individual cores have high capacitive losses with a.c.), and there are no frequency synchronisation problems when these are used as d.c. 'links' between countries (e.g. UK/France).
What else can I help you with?
Why there are no losses in DC transmission?
There are losses in d.c. transmission lines, due to their resistance. But there are no reactive losses. So, d.c. transmission lines have less losses in comparison to an equivalent a.c. transmission line.
Where is the highest transmission voltage in India?
the highest transmission volatage in India is 765kV ac. The highest voltage in the case of DC transmission is +/- 600 kV.
Why is ac more useful then DC?
Firstly, AC is not always used for transmission rather than DC, DC transmission is becoming a frequently useful form of transmission and has several advantages in certain circumstances. Though the reason AC is used more than DC is as follows: Firstly, the output of power stations comes from a rotary turbine, which by it's nature is AC and therefore requires no power electronics to convert to DC. Secondly it is much easier to change the voltage of AC electricity for transmission and distribution. thirdly the cost of plant associated with AC transmission (circuit breakers, transformers etc) is much lower than the equivalent of DC transmission AC transmission provides a number of technical advantages. When a fault on the network occurs, a large fault current occurs. In an AC system this becomes much easier to interrupt, as the sine wave current will naturally tend to zero at some point making the current easier to interrupt. It is also easier to meter AC connections, to monitor power flows accross a network. DC transmission however, is used to link two completely different AC systems. An AC link would require the two systems to be entirely in sync, with the peaks and troughs of the AC wave to occur at the same time. With a DC transmission link, this can be negated allowing the link of, for example, the UK and European transmission network. (See National Grid website for information on the HVDC England - France connector) We can make a d.c transmission plant like a.c because we can't get uninterrupted power supply like a.c .after a certain time d.c source (battery) need charge for recharging it self .
How do you convert 12 volt DC to 100 volt DC?
With an appropriately rated DC to DC converter.
Can DC series motor work on ac and DC and why?
A dc series motor can work on dc and ac because dc motors are totally reversible.
Do you get DC current directly from the transmission line?
Only if it is a DC transmission line.
Why dc supply cannot be given to transmission lines?
We can use DC too for the transmission system. Refer HVDC transmission system.
Who is better ac or DC transmission?
ac transmission is better. because it is cheaper as converter are not use.but losses are more as comparison to dc.
How many phase are there from transmission line from Oregon?
AC transmission lines are 3-phase, DC transmission lines don't have phases. It doesn't matter where they are from.
Where would DC be used instead of AC?
DC is used for extra-high voltage transmission systems, as there are less losses with DC than with AC, and no synchronising problems.
Which power transmission is best ac or dc?
yes, i think dc transmission is best, coz in dc losses is low, no iductance between conduct, less corona loss.AnswerNeither is 'better'; they each have advantages and disadvantages. For example, although there might be less losses with d.c. transmission, the equipment required to raise and reduce the voltage at each end of the line is more costly than for an a.c. transmission system.
Why ac prepared DC current?
because the transmission cost of ac supply is lesser than dc. thats why ac is prefered
Is AC better than DC in terms of electrical power transmission efficiency?
AC is generally more efficient than DC for long-distance electrical power transmission because it can be easily converted to higher voltages, reducing energy losses during transmission.
Why there are no losses in DC transmission?
There are losses in d.c. transmission lines, due to their resistance. But there are no reactive losses. So, d.c. transmission lines have less losses in comparison to an equivalent a.c. transmission line.
Why is not impractical to power distribution in power DC?
IN DC FOR LOW VOLTAGE HIGH DENSITY OF CURRENT WILL BE THERE SO WE CAN NOT USE THIS FOR BEST PRACTICE FOR TRANSMISSION & ALSO BECOS OF HIGH CURRENT TRANSMISSION LOSSES ARE VERY HIGH ( I2XR) LOSSES, TRANSMISSIN EQUIPMENT FOR DC ARE HIGH COSTIN DC FOR LOW VOLTAGE HIGH DENSITY OF CURRENT WILL BE THERE SO WE CAN NOT USE THIS FOR BEST PRACTICE FOR TRANSMISSION & ALSO BECOS OF HIGH CURRENT TRANSMISSION LOSSES ARE VERY HIGH ( I2XR) LOSSES, TRANSMISSIN EQUIPMENT FOR DC ARE HIGH COSTAnswerThe main reason is that we cannot use transformers to easily and efficiently change the magnitude of DC voltages, and the ability to change voltages is essential for electricity distribution. However, having said that, very high-voltage transmission over exceptionally long distances is often done using DC. This is because DC losses are far lower than AC losses.
Why you use ac current of home instead of dc?
alternating current is generally instantaneous in nature and even in transmission lines it is easy to transmit with less losses when compared to dc as because it possess frequency where as dc do not have
400 kv transmission double circuit dc power line's restricted area?
no it no restricted
