Line Support: The supporting structures for overhead line conductors are various types of poles and towers called line support. In general, the line supports should have the following properties : High mechanical strength to withstand…
Conductor Material Used for Transmission and Distribution: The conductor is one of the important items as most of the capital outlay is invested for it. Therefore, proper choice of material and size of the conductor…
Introduction to Overhead Line: Electric power can be transmitted or distributed either by means of underground cables or by overhead line. The underground cables are rarely used for power transmission due to two main reasons.…
Requirements of Satisfactory Electric Supply Connection: The Electric Supply Connection in India is 3-phase a.c. operating at a frequency of 50 Hz. The power station delivers power to consumers through its transmission and distribution systems.…
Economic Choice of Transmission Voltages: It has been shown earlier here that if transmission voltage is increased, the volume of conductor material required is reduced. This decreases the expenditure on the conductor material. It may…
Economic Choice of Conductor Size: The cost of conductor material is generally a very considerable part of the total cost of a transmission line. Therefore, the determination of proper Conductor Size for the line is…
Comparison of Various Systems of Transmission: Below is given the table which shows the ratio of conductor-material in any Comparison of Various Systems of Transmission with that in the corresponding 2-wire d.c. system. Cos Φ…
Comparison of Conductor Material in Underground System: In an Conductor Material in Underground System using multi-core belted type cables, the chief stress on the insulation is usually between conductors. Under such situations, comparison is made…
Comparison of Conductor Material in Overhead System: In comparing the relative amounts of Conductor Material in Overhead System necessary for different systems of transmission, similar conditions will be assumed in each case viz., same power…
Various Systems of Power Transmission: It has already been pointed out that for transmission of electric power, 3-phase, 3-wire a.c. system is universally adopted. However, other systems can also be used for transmission under special…