Voltage Stability Evaluation Incorporating Wind Power Intermittency

A simulation framework is proposed to evaluate the voltage stability of power systems incorporating wind power intermittency. Firstly, the power output modelings of three types of wind turbines are discussed. Secondly, the Jensen model is employed to simulate the wind farm with the wake effect. The Monte Carlo based technique is used to conduct the voltage stability evaluation incorporating the randomness of the wind speed based on the Weibull probability distribution. Thirdly, the relative sensitivity index (RSI) is calculated to identify weak buses during analysis. Finally, case studies with different simulation scenarios are carried out. Some statistical results involving weakness probability, expected value and variance of RSI as well as preliminary conclusions are drawn based on numerical simulation results. 2013 State Grid Electric Power Research Institute Press.