MATLAB-based Three-Zone Amplitude-Comparison Distance Protection Model with Integrated Protection Module

This three-zone amplitude-comparison distance protection model is constructed using MATLAB. The model incorporates protection modules and S-function blocks, designed to safeguard power systems, particularly power transmission lines, against electrical faults. The implementation utilizes three-zone amplitude-comparison distance protection technology, which effectively prevents overvoltage and overcurrent conditions caused by faults in transmission lines. The model construction involves detailed analysis and computational procedures, including impedance calculation algorithms and zone coordination logic implemented through MATLAB scripts and Simulink blocks. Key components include phasor measurement units for signal processing, comparator functions for amplitude analysis, and trip logic circuits programmed using MATLAB's Stateflow or embedded MATLAB functions. The development process requires meticulous parameter tuning and validation testing to ensure optimal performance in practical applications.