Concentrated fault traversing device for wind power station

The invention relates to a concentrated fault through device for a wind power station. The device can respectively work in a wind power station running mode and a unit test mode, and is arranged in a container mode or a container combined with outdoors mode. The device comprises transient voltage supporting parts, a transient reactive injection part and a power discharging part, wherein the transient voltage supporting parts are connected in series and arranged between the concentrated grid point of the wind power station and the concentrated collection line of a fan in the wind power station; the branches of the transient reactive injection part and the branches of the power discharging part are connected in parallel and linked on the concentrated collection line of the fan in the wind power station. The device are respectively divided into a steady-state running state and a transient-state running state in the wind power station running mode and the unit test mode, and certain master devices are multiplexed in the two modes, so that the covered wind power stations consisting of constant-speed asynchronous wind motor units can meet the demand of low-voltage through capability specified by the national standard and the U.S. and European wind power grid standards. When the running modes of the device are switched, the wind power station does not need to be in power failure.