Abstract
Relaying elements from different manufacturers use different concepts and algorithms to produce the same results. A significant variety of commonly used relaying elements, that are used for protection of power system elements, exist in Electro Mechanical (EM), Solid State (SS), as well as Micro-Processor (MP) based relays. Therefore, it is advantageous to develop standardized routines for testing of various relaying elements performing commonly used protective functions offered by EM, SS, and modern MP based relays. In this project report, a standardized approach to development of test routines for commonly used relaying elements, using modern test equipment and software, will be presented, analyzed, and documented. Modern laboratory test equipment and associated software capable of producing current and voltage signals of various magnitudes and frequencies necessary for testing relaying elements will be used for implementation of standardized test routines. Various IEEE papers written by professionals in the field of relaying applications where utilized. Also the functionality of the Omicron Test Universe software was used to demonstrate the capabilities of various test set equipment available to perform the procedures presented in the project report. The approach presented in the following analysis for testing relay functions can be utilized as a guideline for development of automated test routines for various types of MP based relaying elements offered by the industry independent of their make, model, or manufacturer. Non typical relaying element and concepts that may exist in relays made for special functions are excluded in the scope of this project report.