[SOLVED] Wavelength of Power Wave

[rahulpsharma]

What is the physical significance of wavelength for a Powerline Frequency. For Instance, a typical 50 Hz signal will have a wavelength of 6000 Kilometers (Speed of Light/Freq)...

Then what does it mean to have a wavelength of 6000Kms in real physical sense...

A cable is attached to a Generator that generates the AC which, as we saw above, has a wavelength of 6000Kms... So assuming that the cable that carries the AC to a distant motor, say, 600 meters from the generator will NEVER be able to see the peak of the wave cos the Peak of the wave will occur at a quarter of the distance of the wavelength from the source (generator) i.e., 1500 Kms in this case!!! What does it mean, then, to have a wavelength of 6000 Kms for a Powerline Waveform.

 

[klystron]

Is this model true if the far end of the network at 6000km is open circuit? What is the effect of distributed load impedance changes and line transformers?

 

[rahulpsharma]

Is this model true if the far end of the network at 6000km is open circuit? What is the effect of distributed load impedance changes and line transformers?

It is just a theoritical question about something that is routine.... I am just trying to understand that if wavelength is the distance after which the wave repeats itself then does it mean that the power line wave repeats itself after every 6000 Kms...??

 

[DugalMc]

Thats true if you stop the time. If that happens you'll "see" a wave with that wavelength.
If you "stop the distance" (ie. you measure at a fixed point) you'll see a wave oscilating
from Vmin to Vmax at 50Hz.
Remember the wave is moving. At what speed?

 

[rahulpsharma]

Thats true if you stop the time. If that happens you'll "see" a wave with that wavelength.
If you "stop the distance" (ie. you measure at a fixed point) you'll see a wave oscilating
from Vmin to Vmax at 50Hz.
Remember the wave is moving. At what speed?

Its moving at the speed of light...??!!??

 

[dariolopezee]

What is the physical significance of wavelength for a Powerline Frequency. For Instance, a typical 50 Hz signal will have a wavelength of 6000 Kilometers (Speed of Light/Freq)...

Then what does it mean to have a wavelength of 6000Kms in real physical sense...

A cable is attached to a Generator that generates the AC which, as we saw above, has a wavelength of 6000Kms... So assuming that the cable that carries the AC to a distant motor, say, 600 meters from the generator will NEVER be able to see the peak of the wave cos the Peak of the wave will occur at a quarter of the distance of the wavelength from the source (generator) i.e., 1500 Kms in this case!!! What does it mean, then, to have a wavelength of 6000 Kms for a Powerline Waveform.

It only means that if you wanted to measure two peaks (or troughs) on the wave at the same time, you would have to have a line that long to do it. Since the voltage (or power) is propagating, the peak (and trough) of the wave WILL reach its destination.