Effect of Damping Constant and Rotor Inertia Constant On One- Dimensional Ring Power System Electromechanical Wave Propagation

Abstract

This paper completes the previous work that introduced the analysis of the electromechanical wave propagation that follow a disturbance occurring at any machine in the one-dimensional ring power system model. The analysis is performed for the varying of damping constant (D) and rotor inertia constant (M) of the system machines. The continuum principle, which considered for the power system leads to a set of nonlinear partial differential equations (PDE). So, the discretization concept was applied in this paper. MATLAB package is used to carry out the simulation. From which, some of the wave propagation parameters are calculated. Simulation results in different situations are presented and discussed. These results present and show the important effect of damping constant and rotor inertia constant on one-dimensional ring power system electromechanical wave propagation.

A Study of One-Dimensional Power System Parameters Effects on the Electromechanical Wave Propagation

“…Also, the effect of three different parameters on the wave propagation (number of generators in the system, internal impedances of these generators and load power factor) was studied and the correlation between these parameters and the propagation was demonstrated. From the discussion of previous sections and previous work [7][8], the electromechanical wave propagation has harmful effects on power systems; of these effects is the out of synchronization of some system machines, or the overall system going in black out. In some cases, the electromechanical wave propagation is selfdamped in sustain with the existing system parameters.…”

“…The wave propagation is shown in figure 7, and the wave speed and frequency is calculated from figure (8). The peak of the 1 st generator occurs at about 10.34 seconds, the peak of the 32 nd generators occurs at about 20.67 seconds and peak of the 63 rd generators are about 30.92 seconds.…”