HVDC Transmission
In an AC system, voltage conversion is simple. An AC transformer allows high power levels and high insulation levels within one unit, and has low losses. It is a relatively…
Construction Of Powercables
An underground cable essentially consists of one or more conductors covered with suitable insulation and surrounded by a protecting cover. Although, several types of cables are available, the type of…
Overhead Lines Versus Underground Cables
The distribution system can be overhead or underground.Undergrounding is more expensive, since the cost of burying cables at transmission voltages is several times greater than overhead power lines, and the…
Classification of Overhead Transmission lines
We know the parameters R, L, C greatly affect the performance of transmission line. Therefore, it is necessary for us to find out the line losses, transmission efficiency, voltage drop,…
Bundledconductors
What is a conductor? A conductor is a material which allows the electric current to flow through it. A single conductor can be used as a single phase. Similarly a…
Substation
The present-day electrical power system is a.c. i.e. electric power is generated, transmitted and distributed in the form of alternating current. The electric power is produced at the power stations…
SAG
While erecting an overhead line, it is very important that conductors are under safe tension. If the conductors are too much stretched between supports in a bid to save conductor…
Effects On Transmission Lines
Contents Skin Effect Proximity Effect Ferranti Effect Skineffect In DC system, there is an equal distribution of current in the cross section of the conductor.Because the frequency of DC…