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