Implementation of Digital Remote Line Protection in Java Language

This paper introduces an algorithm for implementing distance protection of lines with polygonal and circular characteristics using the Java programming language. The analysis assesses the algorithm's performance for various types of relay characteristics during different short circuit scenarios. To conduct the analysis, a model of the protected line was developed in PSCAD/EMTD, which provided instantaneous values of currents and voltages during short circuits. An emergency COMTRADE file was generated to capture the process.For a visual representation of the distance protection operation, graphs are constructed, illustrating the relay's response under different conditions. These graphs also demonstrate how the relay characteristics impact the operation of the resistance relay, allowing a better understanding of the system's behavior.