The invention provides a wind power station whole low voltage ride through (LVRT) system. The system comprises at least one wind turbine and at least one wind turbine set-up transformer which are connected in series at a wind power station side and at least one main step-up transformer at a power grid side. The system further comprises a plurality of current collection busses and a power grid bus, wherein each current collection bus accesses at least one wind turbine and at least one wind turbine step-up transformer which are connected in series; the current collection busses are divided intoat least one group, and each group comprises at least one current collection bus; the power grid bus is used for accessing the main step-up transformer at the power grid side; and each group of the current collection busses are respectively connected to the power grid bus through an LVRT device. The invention can achieve the wind power station whole LVRT by using fewer LVRT devices.