Installation 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 defined local wind condition; and from this to establish the efficient installation process in planning wind power system. In this research, operational characteristics of WPT under regular and irregular wind speeds are considered and verified against power system operational particularities; the losses of power system reactive power and grid voltage drop are calculated to estimate the degree of stability of the local power system; impact current resulting from when WPT connects with the power system and its use for verifying the stiff condition of connecting grid. Electric particularities under the short circuit condition of WPT and weak power system are simulated so that to satisfy power system demand after the WPT is installed, and the maximum capacity of wind power generation that can be safely introduced into the targeted local 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; and could be applied to the existing weak power system in the rural region. This will demonstrate the value of WPT in a practical application.