Evaluation and performance comparison of power swing detection algorithms in presence of series compensation on transmission lines

Any sudden change in the configuration or the loading of an electrical network causes power swing between the load concentrations of the network. In order to prevent the distance protection from tripping during such conditions, a power swing blocking is utilized. This paper compares and evaluates the performance of several power swing detection algorithms in the presence of series compensation and without it. The decreasing impedance, the Vcosφ and the power derivation methods are ordinary algorithms for power swing detection. A precise model for power swing conditions has been generated by EMTDC/PSCAD software. In this paper this model is used to simulate the algorithms behavior under different operational conditions.