Contents
What is an transmission line?
In electrical engineering, a transmission line is a specialized cable or other structure designed to conduct electromagnetic waves in a contained manner. The term applies when the conductors are long enough that the wave nature of the transmission must be taken into account.
What is regulation of transmission line?
Voltage regulation of transmission line is defined as the ratio of difference between sending and receiving end voltage to receiving end voltage of a transmission line between conditions of no load and full load. It is also expressed in percentage.
What is the function of transmission line?
The term Transmission Lines broadly refers to overhead transmission lines and underground cables. The key function of a transmission line is to transfer bulk power between generation sources and load centres.
What is the efficiency of transmission?
Transmission efficiency is defined as the ratio of payload to the bitstream length.
How is voltage regulation of a transmission line defined?
Voltage regulation of transmission line is defined as the ratio of difference between sending and receiving end voltage to receiving end voltage of a transmission line between conditions of no load and full load. It is also expressed in percentage. Where, V s is the sending end voltage per phase and V R is the receiving end voltage per phase.
What are the effects of a transmission line?
When discussing transmission line effects, it is meant that the voltage and current in the propagating wave will be at minimum and maximums at different points along the conductor. To model this, we can ‘cut’ the conductor into pieces and model each piece with an inductance and capacitance characteristic of that medium.
How is the length of a transmission line determined?
Thus, we can define a transmission line by its electrical length in comparison to its physical length. A common rule of thumb is that a conductor should be treated as a transmission line if its length is greater than 1/10 of the wavelength of the signal traveling on it as demonstrated in (1):
What makes a transmission line a short transmission line?
Short Transmission Line. A short transmission line is classified as a transmission line with: A length less than 80km (50 miles) Voltage level less than 69 kV Capacitance effect is negligible Only resistance and inductance are taken in calculation capacitance is neglected.