Grading of Electrical Cables

The electrostatic stress in a single core cable has maximum value (gmax) at the conductor surface and it goes on decreasing as we move towards the sheath. The unequal stress distribution in a cable is undesirable. The term grading of cables refers to the process of achieving uniform electrostatic stress in the dielectric of cables. … Read more

Ring Main Power Distribution System

The ring main power distribution system is power distribution system in which each distributor is fed via two feeders. In order to achieve this system, the primaries of distribution transformers are looped in such a way that loop circuit starts from substation, makes a loop through the area under coverage and ends back to the … Read more

Radial Power Distribution System Network

A radial system is one power source system. In this system, separate feeders radiate from a single substation and feed the distributors at one end only. Radial power distribution is cheapest to build. The figure below displays a radial power distribution system. A feeder originates from substation and feeds the distributor at one end only. … Read more

Top 5 Advantages of DC Tachometers

A tachometer is an instrument that measures the working speed of an engine, typically in revolutions per minute (RPM). A tachometer is a miniature low-voltage generator. It is widely used in control system servo systems and vehicles as a transducer for producing sound signals proportional to speed. Given below are top 5 advantages of DC … Read more

How Reactive Power can be measured using Conventional Wattmeter

With an appropriate connection of conventional wattmeter and phase-shifting autotransformer, reactive power can be accurately measured. A transformer used for the application is termed as phaseformer or reactiformer. Before proceeding further, it is good to go back to formulas for watts and vars. The mathematical formulas for watts and vars is: Watts = |V| |I| … Read more

TOU Meters – Time of Use Metering

The term TOU is an abbreviation for Time-of-Use metering. TOU metering is different form normal meters in terms that its measures how much electricity is consumed as well as it measures when electricity was consumed. By application of TOU specially-developed rate tariffs that price demand and energy at different rates during specified time periods throughout … Read more

Four Categories of Wind Power

On the basis of Size and its connection to the grid, wind power is classified into four types: Small, Non-Grid Connected If one wants electricity in a remote location a small, non-grid connected turbine application is ideally suited. The small, non-grid connected turbine is not a cheap and economical power source. The costs are high, … Read more

Variable Loads in Electrical Power System

In a real-life electrical power system, the load demand is not constant, rather it varies time by time. The variation in load demand is due to the uncertain demands of consumers and technically the term variable load is used to define this. An electrical power plant is designed to supply electric power to consumers. An … Read more

Advantages of Liquid Fuels over Solid Fuels

Liquid fuels are combustible substances that exist in liquid form and are used to obtain thermal energy. Examples of liquid fuels include gasoline, diesel, and kerosene. On the other hand, solid fuels refer to different forms of solid materials that can be burnt in order to release energy. Examples of solid fuels include: wood, hexamine … Read more