22. AUTOMATIC LOAD SHARING OF TRANSFORMER USING MICROCONTROLER

The transformer is a static device, which converts power from one level to another level. The aim of the project is to protect the transformer under overload condition by load sharing. Due to overload on transformer, the efficiency drops and windings get overheated and may get burnt. Thus by sharing load on transformer, the transformer is protected. This will be done by connecting another transformer in parallel by means of a micro -controller. The first transformer's load is compared to a reference value by the microcontroller. The second transformer will share the additional load when the load is greater than the reference value. As a result, the two transformers operate effectively and are protected from harm. The load currents in this project are controlled by three modules.The first module serves as a sensing unit to measure the load's current, while the second module serves as a control unit.The microcontroller unit, which is the final module, will read the analogue signal, carry out certain calculations, and then send a control signal to a relay. The control station is also informed about switching via a GS M modem.