TY - JFULL AU - Khaled M. EL-Naggar PY - 2019/1/ TI - Estimation of Synchronous Machine Synchronizing and Damping Torque Coefficients T2 - International Journal of Energy and Power Engineering SP - 745 EP - 750 VL - 13 SN - 1307-6892 UR - https://publications.waset.org/pdf/10010948 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 156, 2019 N2 - Synchronizing and damping torque coefficients of a synchronous machine can give a quite clear picture for machine behavior during transients. These coefficients are used as a power system transient stability measurement. In this paper, a crow search optimization algorithm is presented and implemented to study the power system stability during transients. The algorithm makes use of the machine responses to perform the stability study in time domain. The problem is formulated as a dynamic estimation problem. An objective function that minimizes the error square in the estimated coefficients is designed. The method is tested using practical system with different study cases. Results are reported and a thorough discussion is presented. The study illustrates that the proposed method can estimate the stability coefficients for the critical stable cases where other methods may fail. The tests proved that the proposed tool is an accurate and reliable tool for estimating the machine coefficients for assessment of power system stability. ER -