A current limiting reactor is a coil which has a large inductive reactance in comparison with its ohmic resistance. It consists of a few turns of heavy copper strip, sometimes cast directly in concrete so that it can withstand large stress developed by the fault currents. Generally, the reactance of the power system under fault …
Hi friends, In this article, I am going to discuss components of HVDC transmission system, working, types, advantages and disadvantages of the HVDC transmission system. I hope you will find it useful and exciting. Transmission and distribution of electric power are done using alternating current, mainly due to economic reasons. However, due to the development …
As per present terminology, voltages less than 300 kV are termed as High Voltages. The voltages in the range of 300 kV to 765 kV are known as Extra High Voltages (EHV). The voltages which are 765 kV are termed as Ultra High Voltage (UHV). In India, transmission voltage ranges from 66 kV to 400 …
Electrical cable classification can be done in two ways according to on the basis of insulating material used in their manufacture, on the basis of voltage for which they are manufactured. Electrical Cable Classification According to Voltage However, the classification of cables on the basis of voltage is more common, according to which they can …
Construction of 3 core underground cable is shown in Figure. The different parts of it are as under: Core or Conductors: A three core cable has three conductors as shown in Figure. These conductors are made of copper or aluminum and usually stranded to make the cable flexible. Insulation: Each core or …
The following connection schemes of distribution system are generally employed: Radial System In a radial system, separate feeders radiate from a single sub-station and feed the distributors at one end only. A single line diagram of a radial system for AC distribution is shown in the figure. Here substation supplies power to a …
The distributors of AC and DC distribution system are generally classified as per the way they are being fed by the feeders. The main distributor types in power distribution system are as under: Distributor fed at one end. Distributor fed at both ends. Distributor fed at the center. Ring mains or Ring distributor. Distributor …
The electrical energy generated at the power stations is conveyed to the consumers through a network of transmission and distribution systems. In the power system, the electrical energy generated at the power stations is conveyed to major sub-stations. From the major sub-stations, it is conveyed to the bulk power consumers by high voltage distribution system …
When we apply an alternating potential difference across two conductors whose spacing is large as compared to their diameters, then the atmospheric air surrounding the conductors is subjected to electrostatic stresses. At low p.d. between the conductors, there is no change in the condition of the air around the conductors. However, if we increase the …
When a transmission line supplies a load current, there is a voltage drop in the line due to resistance and inductance (inductive reactance) of line. Therefore, receiving end voltage VR is generally less than the sending end voltage VS. This voltage drop in the line is expressed as a percentage of receiving end voltage VR …
Efficiency | Voltage Regulation of Transmission Line Read More »