what are the advantages of having high voltage in transmission
lines?
Answers were Sorted based on User's Feedback
Answer / dany.chellam
if we transfer power in high voltage range
1.the current flow will decrease, so that the copper loss will
decreased i.e I2*R
2. size of the conductor will be reduced.
3. we can reduce the theft in transmission lines.
Is This Answer Correct ? | 13 Yes | 1 No |
Answer / kunal
in hign voltage transmssion cooper loss is very low
Is This Answer Correct ? | 3 Yes | 1 No |
Answer / vinoth
to reduse thetransmition losses... and efficiency
Is This Answer Correct ? | 1 Yes | 2 No |
Answer / srajan
AC is used for both transmission and distribution because it is possible to easily transform voltage. Increasing voltage reduces current, thereby reducing the size conductors required to transmit large blocks of power, and also minimizes losses. Lower voltages are desired at the point of consumption because of safety and convenience.
With DC, the advantages of higher voltage (smaller conductors, lower losses) and lower voltages (safety and convenience) are also present, but there is no convenient way to change the voltage with DC. That's the main reason that all-DC systems are not used.
DC does offer two advantages over AC - with AC, the maximum distance that power can be transmitted is limited by two factors. Obviously, one is losses. But a more limiting factor is that the maximum magnitude of power transfer is governed by the phasor angle between the sending and receiving voltages - that angle physically cannot exceed 90 degrees, and as a practical matter can not be allowed to exceed about 30 degrees without jeopardizing the ability to the system to respond to contingencies. With DC, there is no angular limitation, only a limitation based on losses.
That angular concern comes about because of the need to maintain synchronism across an AC system. The second advantage of DC is that there is no need to maintain synchronism, and in fact DC can readily be used to interconnect systems that are not in synchronism (for example, the State of Texas is not in synchronism with anyone else - and that goes beyond politics - and is interconnected with the rest of North America via high voltage DC. It is also possible to interconnect systems that are operating at different frequencies using DC - for example, the Amtrak rail system between Washington DC and New York is a 25 Hz system, and is interconnected to the rest of the grid via either DC or special rotating frequency converters.
Is This Answer Correct ? | 1 Yes | 2 No |
what is the differance between ac induction motor and ac synchronous motor?
What is frequency?
I am an American living in Vietnam and I have recently gotten a refrigerator from Japan and it is rated for 100 vac, but the power here is 220 so I bought a voltage stabilizer it has a 1 kva output rating. Can you please tell me what the amperage is? I'm confused and without a working fridge.
Why the transmission lines are in 11kV, 22kV, 33kv, and why not 10kV,20kV, 30kV?
how oil in the MOCB was reduced compared with OCB? what are the features of the MOCB?
0 Answers Asahi, BARC, K-Electric,
what is the use of power transformer in GSS.
0 Answers College School Exams Tests, DLF, TCS,
what are the reasons of low voltage during start the DG?
What should be setting for alarm,tripping and cooling fan on for power transformer's oil temp. and winding temp. indicator?
why fan consume constant power even when we increase or decrease its circuit resistance through speed regulator???
WHAT IS THE DIFFERENCE B/WDYNAMO&ALTERNATOR?
1 hp single phase motor is more likely to get hot thsn inone hp 3 phase motor its true or false? If true why?
what is diffrence b/w -48vdc and +48vdc ?