The inductance and capacitance calculations of an overhead transmission line are simplified by using two important terms namely GMR (self GMD) and mutual GMD. Particularly, when there is a multiconductor arrangement, GMR and GMD …
The overhead lines and underground cables are methods used for the transmission and distribution of power in an electrical power system. The selection of overhead line or underground cable depends upon various factors like operat…
The overhead transmission lines experience swinging in wind in the vertical plane. In addition to this, the overhead transmission line experiences two types of vibration. They are, Aeoline vibrations Galloping or Dancing vibratio…
The need for improvement of string efficiency arises as the voltage distribution among different insulator discs in a string insulator is not uniform. The voltage across the insulator disc nearest to the line conductor is high co…
Efficiency is a factor that describes the performance of any equipment or device, economic use of equipment, and the extent to which it can be used. Thus it is important to determine the efficiency of a device. The efficiency is …
We know that a capacitor is formed by separating two conducting materials with an insulating medium in between them. In a similar fashion, a capacitance is formed in between the two conductors of an overhead transmission line, wh…
Whenever corona occurs, due to electrostatic stress on the atmospheric air surrounding the conductors of the transmission line. The air becomes ionized and produces ions. These ions present in air experience a force upon them and…
When there exists a potential difference between two conductors of a transmission line, where the distance between them (spacing) is larger compared to their diameters. Then the air surrounding the conductors is subjected to elec…
What is Corona Effect in Transmission Line? When the two conductors of a transmission line are connected to an alternating potential difference, whose spacing is large in comparison with their diameter, then the atmosphere air s…
What is Bewley's Lattice Diagram? Consider a resistive load R L connected to a generator G having resistance R g through a transmission line of characteristic impedance Z c as shown in the future below. If a voltage or …
The transmission line is the part of the power system, it is the medium for transmitting the electrical power generated at generating station to load centers. The transmission lines are classified based on the voltage level, leng…
