Operation of wind power turbines under turbulent wind conditions using wind farm controllers

Abstract

This study considers the problems caused by turbulence in which is latent in wind power generation facilities constructed in mountainous areas. As a solution, a wind farm control system is used to reduce the frequency of transient abnormal trips of wind turbines by combining automatic detection of turbulence and power curtailment control. It was confirmed that the energy production can be maintained regardless of the control operation. For this automatic detection of turbulence, it used setting parameters that can be intuitively decided from wind conditions and wind turbine operating conditions, rather than turbulence intensity values defined in IEC61400-1. As a result, it was possible to quickly change the operational status without the need for analysis or statistical calculations at site adjustments. In addition, by applying this wind farm control to a wind power generator with damaged main bearings, it was possible to reduce the increase in bearing vibration even during operation in winter, and to operate in rated operation under stable wind conditions.