Small-signal stability of wind power system with full-load converter interfaced wind turbines

Abstract

Abstract-Small-signal stability analysis of power system oscillations is a well established field within power system analysis, but not much attention has yet been paid to systems with a high penetration of wind turbines and with large wind power plants. In this paper an analysis is presented which assess the impact of full-load converter interfaced wind turbines on power system small-signal stability. The study is based on a 7 generator network with lightly damped inter-area modes. A detailed wind turbine model with all grid relevant control functions is used in the study.

The impact of increased penetration of converter control-based generators on power system modes of oscillation

“…Additionally, current utility scale photovoltaic (PV) plants are full converter control based systems. Therefore, the impact of the increasing penetration level of these new converter control based generators (CCBGs) on the security and reliability of the power system has been the subject of recent research [1][2][3][4][5][6].…”

“…Jaime Quintero is on leave of absence from Universidad Autónoma de Occidente, Cali, Colombia. the modes) [4][5][6][7][8][9]:…”

“…The probabilistic nature of wind power and the potential effect on the small signal stability of the overall system has been addressed in [5]. Some other studies have addressed the modal characteristics of the CCBGs and their potential effects on the modal behavior of the power system, using a single machine infinite bus approach [7] or a reduced power system test bed case [6], [8] and [9]. It has been found also that, complementary control loops in CCBGs may be effective in providing additional damping to traditional electromechanical modes [9][10].…”

Effects of Wind Generation Uncertainty and Volatility on Power System Small Signal Stability

“…The IEEE 3-generator-9-bus system was tested to conduct the eigenvalue analysis. T. Knuppel et al [9] assessed the impact of full-load converter interfaced wind turbines on small signal stability. The effects of selected wind turbine and wind farm control parameters were studied based on sensitivity analysis.…”

Simplified equivalent models of large-scale wind power and their application on small-signal stability

“…However, the electromechanical oscillation modes (EOMs) of synchronous systems can be affected by gridconnected wind power. According to [2][3][4], the effects of large-scale wind farms can be either detrimental or beneficial, depending on many factors, such as wind speed, capacity, and connecting point of wind farms, length of transmission lines connecting wind farms to the system, and original structure of power systems, etc. Thus, the effects of wind farms on EOMs need to be further discovered.…”