Method of operating a wind energy system with a voltage-dependent control for an electric reactive quantity to be provided

摘要

The method involves defining a first upper limit value of the grid voltage (-U1) and or a first lower limit value of the grid voltage (U3). The desired value of the reactive electric variable (Q) is continuously increased or decreased further over time as long as the real value of the grid voltage (U) exceeds the first upper limit value of the grid voltage (-U1) or falls below the first lower limit value of the grid voltage (U3).