An Analytical Method for Disturbance Propagation Investigation Based on the Electromechanical Wave Approach
Dengyi Huang, Junda Qin, Hao Liu, Joe H. Chow, Junbo Zhao, Tianshu Bi, Lamine Mili, Qixun Yang
Abstract
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.