Impact of High Wind Power Penetrations on Hydroelectric Unit Operations in the WWSIS

摘要

The Western Wind and Solar Integration Study (WWSIS) investigated the operational impacts of very high levels of variable generation penetration rates (up to 35% by energy) in the western United States. This report examines the impact of this large amount of wind penetration on hydroelectric unit operations. Changes in hydroelectric unit operating patterns are examined both for an aggregation of all hydro generators and for select individual plants. The cost impacts of maintaining hydro unit flexibility are assessed and compared for a number of different modes of system operation.