Small-Signal Stability Effects of Wind Power Integration Capacity and Accommodation on Interconnected Power Systems

Abstract

Wind generation is considered as an economical and environmental friendly way of electricity production. The large-scale wind generation may impact the power systems in almost every aspect. This paper presents the small-signal stability effects of wind power integration capacity and accommodation on interconnected power systems. Furthermore, a study case based on the comprehensive model of the doubly fed induction generator (DFIG) has been conducted and analyzed by using the eigenvalue analysis and dynamic time-domain simulation. The IEEE 3 generators and 9 nodes system has been used in the analysis. Results show that the integration of DFIG wind turbines in a system may improve the damping of interconnected power system, and the interregional low frequency oscillation can be weaken. This study can provide effective basis for the plan and operation of wind power integration into an interconnected power system.