An Analytical Method for Disturbance Propagation Investigation Based on the Electromechanical Wave Approach

Accurate estimates of the electromechanical disturbance propagation in a power system play an important role in taking preventive, corrective, and in-extremis control actions. This paper proposes an analytical method for disturbance propagation investigation based on the electromechanical wave theory. A frame structure model is developed that allows us to derive an analytical relationship between the disturbance propagation and the turbine-generator inertia, the line reactance, bus voltage, and disturbance source frequency. In addition, the disturbance attenuation and the degree of disturbance propagation are studied. Numerical results performed on a multi-machine chain network and the IEEE 118-bus test system demonstrate the effectiveness of the developed method.

Automated summary

Accurate estimation of electromechanical disturbance propagation in a power system is crucial for taking preventive, corrective, and in-extremis control actions. This paper proposes an analytical method based on electromechanical wave theory, which investigates disturbance propagation and studies disturbance attenuation and propagation degree. Numerical results on multi-machine chain network and IEEE 118-bus test system validate the effectiveness of the proposed method.