CSEIT1725156 | Received : 01 Oct 2017 | Accepted : 12 Oct 2017 | September-October-2017 [(2)5: 687-690] International Journal of Scientific Research in Computer Science, Engineering and Information Technology © 2017 IJSRCSEIT | Volume 2 | Issue 5 | ISSN : 2456-3307 687 Transformer Parameter & Monitoring Dr. D. V. Rojatkar, Anushri M. Gadhave Government College of Engineering Chandrapur, Gondwana University, Maharashtra, India ABSTRACT Transformer is the main equipment for well regulated power supply to the all consumers and industrial purposes. In this paper monitoring transformer for problem before they are occur it can prevent fault so that it is costly to repair and result in a loss of service. This is very important electrical device in our day to day life while working for electricity. So it is mandatory to observe and study about the transformer parameters. It always works on high level voltage. So, it is not possible to study and observe the parameters at place where the transformer is placed. In this paper we will understand the transformer parameters so that the caution is to be taken of those parameters. Here we will describe all the parameters of transformers. Keywords : Transformer Parameter, Over And Under Voltage Protection, Over Current Protection I. INTRODUCTION A transformer is an electrical device which transfers electrical energy between two or more circuits through electromagnetic induction. A varying current in one winding of the transformer produces a varying magnetic field, which in turn induces a voltage in a second winding, because magnetic field, Power can be transferred without a metallic connection between the two circuits. Operation of the transformer was discovered by Michael Faraday in 1831, in 1832 Joseph Henry. Michael faradays discover the law of electromagnetic induction. and others. in 1870s, efficient generators producing alternating current (AC). Russian engineer Pavel Yablochkov invented a lighting system based in 1876 on a set of induction coils. In 1878, the Ganz Ganz factory, Budapest, Hungary, began producing equipment for electric lighting and, by 1883, had installed over fifty systems in Austria- Hungary. Protection against fault in power systems (PS) is very essential and important for credible performance. A power system is said to be error when an undesirable state occurs in that power system, where the undesirable condition might be short circuits, over- current, overvoltage etc. The power transformer is one of the most consequence instrument in the electric power system, and transformer protection is an important part of the general system protection approach. Transformers are used in a vast variety of applications, from small distribution transformers serving one or more users to very large units that are an integral part of the bulk power system. Increase in population leads to increase in demands of electrical power. With the increase in demand of power, the existing systems may become overloaded. Overloading at the purchaser end appears at the transformer terminals which can affect its capability and protection systems. To avoid the damaging of transformer due to overloading from purchaser end, it involves the control against over current. II. MAIN COMPONENTS OF A TRANSFORMER The major components of a transformer are the coil , the core, the tank or casing, the radiator, and the bushings as shown in Figure 1. Generally, transformer coil are made of copper because it has a lower resistance and is more capability compared to other metals. Each coil is wrapped with an insulating material such as paper. The primary coil is usually wound around the transformer core and the secondary coil is then wound on top of the primary coil. Between each coating of the coil, another coating of insulating material is wrapped to provide extra insulation between the coil. There are ten major transformer components (Ng 2007).