AUTOMATIC LOAD SHARING BY PARALLEL TRANSFORMER BY USING PIC MICRO-CONTROLLER

Abstract

This paper presents the innovative solution of the Load management at distribution side or consumer side. An automated load sharing technique is proposed to share the load of one consumer side transformer to other slave transformer at the time of peak load or at the time of faulty condition. Transformer is the heart of the power system, it converts the voltage levels. It is basically a static device that transfers the electrical power from one circuit to another circuit with the desired change in voltage and current at a constant frequency. It is only one device that operates at the highest efficiency at full load conditions. But abnormal condition occurs at overloading condition which may result in severe problem in future. Thus by shearing load on transformer the transformer is protected for that we use another transformer in parallel through PIC micro-controller This parallel transformer supplies the load when overloading occurs on the main transformer unit, which switches automatically by PIC. Which results in efficient loading of both transformer. Also when the load is normal both transformers can be switched on to supply the load alternately. This will avoid the thermal overloading of the transformer. So load shearing provides sufficient protection to distribution transformers under overloaded condition.