Economic Load Dispatch

Definition: The economic load dispatch means the real and reactive power of the generator vary within the certain limits and fulfils the load demand with less fuel cost. The sizes of the electric power system are increasing rapidly to meet the energy requirement. So the number of power plants is connected in parallel to supply …

Economic Load Dispatch Read More »

Shunt Resistor

Definition: A resistor having a very low value of resistance such type of resistor is called shunt resistance. The shunt resistor is mainly made of the material having the low-temperature coefficient of resistance. It is connected in parallel with the ammeter whose range is to be extended. It is also connected in series with the …

Shunt Resistor Read More »

Static Voltage Regulator

Definition: The regulator which do not have any rotating parts, such type of regulator is called static voltage regulator. Their circuit consists apparatus like transformers, capacitors, resistors, transistors, magnetic amplifiers, etc. Such type of regulators do not have friction and wear loss ( because it does not have any rotating parts). It does not require …

Static Voltage Regulator Read More »

Automatic Voltage Regulator

The automatic voltage regulator is used to regulate the voltage. It takes the fluctuate voltage and changes them into a constant voltage. The fluctuation in the voltage mainly occurs due to the variation in load on the supply system. The variation in voltage damages the equipment of the power system. The variation in the voltage …

Automatic Voltage Regulator Read More »

Excitation System

Definition: The system which is used for providing the necessary field current to the rotor winding of the synchronous machine, such type of system is called an excitation system. In other words, excitation system is defined as the system which is used for the production of the flux by passing current in the field winding. …

Excitation System Read More »

Line Supports

Definition: The different types of structure (poles or towers) used for supporting the overhead lines or wires, such types of structures are called line supports. The line support plays a major role in power transmission. It kept the proper spacing between the conductors and maintained the conductor at the prescribed distance from its ground parts. …

Line Supports Read More »

Ohm’s Law

When an electric potential difference (V) is applied across a conductor as shown in the figure below, some current (I) flows through it. The flow of current is opposed by the resistance of the conductor and circuit. The relation between voltage, current and resistance is explained by the ohm’s law. Ohm’s laws state that the …

Ohm’s Law Read More »

Magnetic Permeability

Definition: The magnetic permeability is defined as the property of the material to allow the magnetic line of force to pass through it. In other words, the magnetic material can support the development of the magnetic field. The magnetic line of force is directly proportional to the conductivity of the material. Their SI unit is Henry …

Magnetic Permeability Read More »

Travelling Wave

Definition: Travelling wave is a temporary wave that creates a disturbance and moves along the transmission line at a constant speed. Such type of wave occurs for a short duration (for a few microseconds) but cause a much disturbance in the line. The transient wave is set up in the transmission line mainly due to …

Travelling Wave Read More »