Extraction of Symmetrical Components and Fault Indication

Abstract

At present the conventional and practical problems are being solved by computer based software known as Simulation software due to their higher precision and accuracy. In our project we encounter one of such problems like the following. There are many faults we come across in electrical power system such as Line to ground (LG) fault, Line to Line (LL) fault and 3-PHASE Fault. In this project the main focus is to design a circuit for extraction of Symmetrical Components and indicating the type of fault. The project consists of both Software and Hardware parts. A part of this circuit consists of transformers, phase shifters and low pass filters which result in symmetrical components. The faults are detected by various combinations of symmetrical components through AND gate and NOT gate. The faults are indicated by glowing a LED in that respective circuit. First the simulation of the circuit is done in PSPICE simulation software to generate symmetrical components and the output is verified. After the verification of output, the whole setup is designed in hardware and it is tested to run according to the desired parameters.