Dynamic performance of the power differential relay for transmission line protection
Power differential relay was proposed recently as a practical relaying scheme for transmission systems. In this paper, the dynamic behaviour of the power differential relay is thoroughly investigated. These investigations are important to evaluate the overall performance of such relaying functions. For this target, a detailed simulation of a typical transmission system was developed via the MATLAB/SIMULINK package using detailed modeling for each power system element. Both stable and unstable power swings are considered. Moreover, single machine-infinite bus and double machine system operations are considered for all possible faulty and non-faulty conditions. All applied test results confirm the superiority of the power differential relay as an ideal candidate for transmission system protection applications.
differential relay transmission line matlab power swing power system protection