Effective earthing system of electrical power engineering department using optimal electrodes

Abstract

Earthing is the most important part of an electrical installation that is used to divert high currents to the earth during normal and fault conditions. Department of electrical power engineering department is chosen as a case study because it has office room and practical lab for first year students. The objectives of this research are to prevent from electric shock for creating a reliable environment and workplace that student and staffs perform safely their work and to have an effective earthing system at the department. At the time of the fault, current from the equipment flows through the earth grid of the earth and then protect them from the fault current. The earth mat conductors rise in the voltage which is equal to the multiplication of earthing resistance of the earth mat and ground fault current. The assembly of contacts is defined as earthing.*Author for correspondence Electrical connection means the metallic conductors linking the parts of the installation with the earthing. Thus, earthing system is defined as the combination of the earthing and earthing connection together. Earthing systems are essentially needed for power generating substations, central offices, and communication tower sites.According to the earthing of two non-current carrying parts of the electrical system, earthing can be categorized into neutral earthing and equipment earthing. In the former earthing, the neutral of the system which has star winding is directly affixed to the earth by using the Galvanised Iron wire. This earthing is also specified the system earthing that is established in the generator, transformer, motor etc. The latter earthing is set up with the electrical equipment. If any fault occurs in the apparatus, the fault current will flow to the earth with the help of wire. Earthing can be provided by electrically joining the respective elements in the installation to some system of electrical conductors or electrodes that are

Influence of Lightning Current Parameters and Earthing System Designs on Tower Footing Impedance of 500 kV Lines

“…The effectiveness of the TL efficiency can be greatly improved by a good earthing system design [56]. Typically, the nature of the earthing system design has a relationship to the shape of the tower base.…”