Abstract
The focus of this paper is on the analysis of the propagation of electromechanical waves in large power systems. The wave phenomenon of propagation of disturbances through the system is a relatively new concept for the analysis of the operation of the power system as well as for the synthesis of control systems and settings of protective devices. In the paper, a mathematical model of an electromechanical wave for a uniform electric power system in continuum is derived. In addition, a mathematical model of electromechanical wave propagation for a discretized uniform power system consisting of 30 synchronous generators interconnected by overhead lines is derived. For the discretized system, two variants are considered. In the first case, a simplified mathematical model of a synchronous generator was observed, while in the second case, a realistic model of a synchronous generator with corresponding model of turbine, turbine regulator and voltage regulator is observed. In order to confirm the theoretical results, computer simulations are created using the ATP-EMTP software. The obtained results confirm the presence of electromechanical waves in power system, which enable determination of wave speed propagation, as well as insight into the existence of points of discontinuity in power system.
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