Model of a Digital relay.

Simulation example for protection of transmission lines. The model represents a digital relay.

A Digital Relay is a computer-based system with software-based protection algorithms for the detection of electrical faults. This model simulates the working of a digital relay with the help of MATLAB/SIMULINK.

The model contains 3 s-function blocks. The s-function blocks acts as codes to implement the logic for the digital relay. Three s-function blocks (having matlab codes) are:

1. Vector Group Adaptation Block
2. Zero Sequence Components Elimination Block
3. Relay Decision Block

For detailed information of this project refer to the research paper on which this project is based on. This project does not implements the complete research done by the authors, just a part of it is impemented. The simulation results are limited to only certain aspect of the research paper.

This model may act as a project for electrical engineer under-graduates who may have switchgear and protection as one of their subjects.