Gas turbine power plants are a type of power plant that uses a gas turbine to generate electricity. It uses a gas turbine to convert the heat energy of pressurized air into mechanical energy. As a result, the mechanical energy turns the blades of an alternator which generates electricity. In this article, we will discuss … Read more
Pulverized coal is used in modern thermal power plants. It is a powdered form of coal i.e., coal that is grounded into a dust-like size. The pulverized coal is then conveyed to the furnace by way of a stream of hot air. An important purpose of pulverization is to expose a large surface area to … Read more
A diesel power plant is a type of power plant that uses the heat generated by burning diesel fuel to generate electricity. It produces electricity by rotating alternators using a diesel engine. A diesel power plant uses a diesel engine as its prime mover. Diesel combustion generates rotational energy. Diesel engines are equipped with alternators … Read more
An earthing grid is made up of a number of rods connected together by copper conductors. Earthing grid is also known as the earthing mat. It looks like a mesh of conductors. The purpose of earthing grid is to reduce the overall grounding resistance. It also helps in limiting the potential gradient. It is a … Read more
Electrical Earthing means connecting non-current-carrying parts of electrical equipment or the supply system’s neutral point to the earth so that electrical energy can be discharged immediately and safely. Earthing is accomplished by connecting installation parts to electrical conductors or electrodes buried in the soil. This contacting arrangement is known as the earthing. In this article, … Read more
A protection system that isolates a faulty component must possess certain qualities in order to function properly. These qualities are Selectivity or Discrimination Sensitivity Reliability Stability Fast operation Essential Qualities of Protection Let us understand each quality in detail. 1. Selectivity or Discrimination The selectivity or discrimination of a protective relay refers to how well … Read more
In the previous article on “zones of protection in power system“, we see that in order to ensure the safety of the power system, it is divided into different zones. For each zone, there is an appropriate protective scheme. In this article, we will learn about two types of protection in a power system i.e. … Read more
A power system deals with generation, transmission, and distribution of electrical power. Transformers, generators, bus bars, transmission & distribution lines, circuit breakers, etc. are the elements or equipment of a power system. Each element or equipment of the power system has its own protective scheme. For example, transformer protection, generator protection, bus bar protection, transmission … Read more
There is a lot of confusions and misinterpretations regarding the difference between relay and contactor around the industry as they are two closely related terms. Many times these two terms are used nearly interchangeably. Both of them are electrically operated switches and mainly used for control and switching of loads. Although the basic principle of … Read more
Relays and circuit breakers are two commonly used terms of a power system. The study of the protection in power systems is incomplete without the study of relays and circuit breakers. The uses of relays and circuit breakers are found in industrial as well as in commercial applications. There are many differences between a relay … Read more
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