Generator Voltage wavelength 6000 KM

Status
Not open for further replies.
T

transient

Member
Location
korea
Hi !!
If I have a generator that generates power 11KV at 50 HZ .
Now , i calculate the wavelength of my voltage waveform , by applying the standard formula (wavelength=velocity of light /frequency) it comes out to be around 6000 KM .

What is the significance of the term 6000 KM here ?

Suppose I have connected a load to this generator , through a cable which is only 200 meters in length .
Does that mean , that the load will never be able to receive the peak value of the Voltage , since the peak value can only be achieved ,
if the conductor length is atleast 6000 KM / 4 = 1500 KM.

But here the cable length is only 200 meters .

Please throw some light on this .
Transient..
 
The significance is that as long as the length of the line is much smaller than 1/4 of the wavelength you do not need to consider the line as a transmission line with a characteristic impedance and worry about standing wave effects.
Instead you can simply ignore the effects of line inductance and capacitance and assume that the voltage everywhere along the line will be the same as the applied voltage except for the effects of I x R voltage drop.

Sent from my DROIDX using Tapatalk 2
 
Generator Voltage wavelength 6000 KM

Hi
@ gold digger

I have a hypothetical question , will it be benefitial for me , if i have 6000 KM wavelength and i am using 6000 KM length of conductor .

Infact more the length , more will be the voltage drop . But then i read somewhere , if the length of the cable is less then wavelength /4 , then the peak voltage cannot be obtained .


Regards
Transient
 
Last edited:
If the line is that long i.e 6000 KM, any person at the end of line touching the line will not receive any shock at the same moment the generator is switched on the other end but only after a time delay almost equal to the time taken by light to cover that distance.
If the line length is short, the phase of sending end voltage is almost same as the receiving end voltage phase. When the line length increases considerably, there is appreciable change in phase between the two but never in amplitude unless there is appreciable line resistance.
 
Status
Not open for further replies.
Top