Electricity Tariffs

Definition: The amount of money frame by the supplier for the supply of electrical energy to various types of consumers in known as an electricity tariff. In other words, the tariff is the methods of charging a consumer for consuming electrical energy. The tariff covers the total cost of producing and supplying electric energy plus…

Read more

Electrical Insulating Material

Definition: The material which does not allow the electricity to pass through them is known as an electrical insulating material. The charge of the insulating material does not move freely, or in other words, it provides the high resistive path to the electric current through which it is nearly impossible for the electric current to…

Read more

Pin Insulator

The pin insulator is used in power distribution for the voltage up to 33kV. It is placed on the cross arm of the supporting tower. The pin insulator has grooves on the upper end for keeping the conductor. The conductor is tied to the insulator on the top groove on straight line positions and side groove in…

Read more

String Efficiency of Suspension Insulator

When the voltage is applied across the suspension insulator string, it is unequally distributed across the individual unit. The disc near the line conductor is extremely stressed and takes the maximum voltage in the absence of stress. The voltage distribution on insulator string determines the flashover voltage and the voltage at which the localised corona…

Read more

Suspension Insulator

The suspension insulator separates the line conductors and supports them electrically. It consists the number of porcelain insulator units connected with each other by metal links to form a flexible string. The conductor is connected at the bottom of the string. The suspension insulator is shown below. Advantages of Suspension Type Insulator The suspension type…

Read more

HVDC Transmission System

Definition: The system which uses the direct current for the transmission of the power such type of system is called HVDC (High Voltage Direct Current) system. The HVDC system is less expensive and has minimum losses. It transmits the power between the unsynchronized AC system. Component of an HVDC Transmission System The HVDC system has…

Read more

Power System

Definition: The power system is a network which consists generation, distribution and transmission system. It uses the form of energy (like coal and diesel) and converts it into electrical energy. The power system includes the devices connected to the system like the synchronous generator, motor, transformer, circuit breaker, conductor, etc. The power plant, transformer, transmission line,…

Read more

Single Line Diagram of Power Supply System

The electrical energy is produced at generating stations, and through the transmission network, it is transmitted to the consumers. Between the generating stations and the distribution stations, three different levels of voltage (transmission, sub-transmission and distribution level of voltage) are used. The high voltage is required for long distance transmission and, the low voltage is…

Read more

Load Duration Curve

Definition: The load duration curve is defined as the curve between the load and time in which the ordinates representing the load, plotted in the order of decreasing magnitude, i.e., with the greatest load at the left, lesser loads towards the rights and the lowest loads at the time extreme right. The load duration curve is…

Read more

Load Curve

Definition: Load curve or chronological curve is the graphical representation of load (in kW or MW) in proper time sequence and the time in hours. It shows the variation of load on the power station.When the load curve is plotted for 24 hours a day, then it is called daily load curve. If the one…

Read more