Automatic Load sharing of Transformer using Arduino

Abstract - Transformer is basically a static device which transfers the electrical power from one circuit to another circuit with desired change in voltage and current at constant frequency. It is only one device which operates at highest efficiency at full load condition. But abnormal condition occurs at overloading condition which may result in severe problem in future. To avoid such condition, we are using other standby transformer which supplies the load when overloading occurs on main transformer unit, which switch on automatically by Arduino. This will result in efficient loading of both transformers. This will avoid the thermal overloading of transformer. The transformer is very costly and bulky equipment of power system. It operates for 24 hours of a day and feeds the load. Sometimes the situation may occur when the load on the transformer is suddenly increased above its rated capacity. When this situation occurs, the transformer will be overloaded and overheated and damage the insulation of transformer resulting in interruption of supply. The best solution to avoid the overloading is to operate the number of transformers in parallel. It is same as parallel operation of transformers where the number of transformers shares the system load. In the suggested approach second transformer will share the load when the load on the first transformer will rise above its rated capacity. The main aim of the work is to provide an uninterrupted power supply to the energy consumers. By implementation of this scheme the problem of interruption of supply due to transformer overloading or overheating can be avoided. Key Words: Load Sharing, Overload Protection, Parallel Operation, Uninterrupted Supply, Thermal Overloading.