SEVERAL ISSUES IN OPERATION OF LARGE-SCALE WIND FARMS

摘要

Past research and recent lessons learned suggest that large-scale wind farms not only have to operate in the maximum power tracking (MPT) mode to maximize capture of wind energy, they also have to be able to quickly respond to system reliability and economic conditions by operating in the power regulation (PR) mode. This paper discusses several newly identified, critical issues that need to be addressed for satisfactory operation of large-scale wind farms. We first present a nonlinear controller that enables seamless operation in both the MPT and PR modes-a feature not available in existing schemes-but suffers from limited robustness. We then present the result of an empirical study on the loss of power generation in wind farms and discuss its impact on wind farm operation. Finally, we propose a controller for potentially overcoming these issues and conclude with future research directions.