Introduction of wind power into a weak power system considering system fluctuation and limitation

This paper presents the methodology to estimate stable and dynamic operational characteristics of Wind Power Turbines (WPT) in a targeted weak power system under the defined wind condition. Operational characteristics of WPT under regular and irregular wind speeds are determined and verified against system operational particularities. The losses from reactive power and grid voltage drop are useful to determine the system safety range. Impact current resulting from when WPT connects with power systems and its use for analysing the stability of the grid. Electric parameters of WPT in weak power systems under the short circuit condition are simulated and used for checking the stability of the power system. The maximum capacity of wind power generation that can be safely introduced into the targeted power system is determined by considering the fluctuation range of grid voltage. This paper provides a synthetic way to judge the operational characteristics of WPT when installed into a weak power system; it shows value in a practical application.