A wind turbine power generation facility, comprising: a wind turbine generator including a tower, a nacelle disposed on an upper part of the tower and supported on the tower, a wind turbine rotor supported rotatably on the nacelle, and a generator configured to be driven by rotation energy of the wind turbine rotor; further comprising a supervisory control system for controlling operation of the wind turbine generator, including at least one control unit disposed on a rotor hub of the wind turbine rotor or on the nacelle, a SCADA server disposed outside the wind turbine generator for receiving and processing information from the control unit, and an information transmission medium for control connecting the at least one control unit and the SCADA server; and a condition-monitoring system including at least one measurement unit disposed on the rotor hub or the nacelle, a CMS server disposed outside the wind turbine generator for receiving and processing information from the at least one measurement unit, and an information transmission medium for measurement connecting the at least one measurement unit and the CMS server, the condition-monitoring system being configured to collect at least data related to vibration of the wind turbine generator by the at least one measurement unit and to monitor a condition of the wind turbine generator on the basis of the data related to the vibration, characterized in that the information transmission medium for control and the information transmission medium for measurement are separated from each other, wherein the supervisory control system further includes a control-side data accumulation part disposed inside the tower and configured to accumulate data to be transmitted from the control unit to the SCADA server at least temporarily, or the condition-monitoring system further includes a measurement-side data accumulation part disposed inside the tower and configured to accumulate data to be transmitted from the measurement unit to the CMS server at least temporarily, and wherein the wind turbine power generation facility is configured to accumulate data failing to be transmitted to the SCADA server or the CMS server due to the failure in the communication in the control-side data accumulation part or the measurement-side data accumulation part, and to transmit the data accumulated in the control-side data accumulation part or the measurement-side data accumulation part to the SCADA server or the CMS server after recovery of the communication, if there is a failure in communication between the control unit and the SCADA server or between the measurement unit and the CMS server. a wind turbine generator including a tower, a nacelle disposed on an upper part of the tower and supported on the tower, a wind turbine rotor supported rotatably on the nacelle, and a generator configured to be driven by rotation energy of the wind turbine rotor; further comprising a supervisory control system for controlling operation of the wind turbine generator, including at least one control unit disposed on a rotor hub of the wind turbine rotor or on the nacelle, a SCADA server disposed outside the wind turbine generator for receiving and processing information from the control unit, and an information transmission medium for control connecting the at least one control unit and the SCADA server; and a condition-monitoring system including at least one measurement unit disposed on the rotor hub or the nacelle, a CMS server disposed outside the wind turbine generator for receiving and processing information from the at least one measurement unit, and an information transmission medium for measurement connecting the at least one measurement unit and the CMS server, the condition-monitoring system being configured to collect at least data related to vibration of the wind turbine generator by the at least one measurement unit and to monitor a condition of the wind turbine generator on the basis of the data related to the vibration, characterized in that the information transmission medium for control and the information transmission medium for measurement are separated from each other, wherein the supervisory control system further includes a control-side data accumulation part disposed inside the tower and configured to accumulate data to be transmitted from the control unit to the SCADA server at least temporarily, or the condition-monitoring system further includes a measurement-side data accumulation part disposed inside the tower and configured to accumulate data to be transmitted from the measurement unit to the CMS server at least temporarily, and wherein the wind turbine power generation facility is configured to accumulate data failing to be transmitted to the SCADA server or the CMS server due to the failure in the communication in the control-side data accumulation part or the measurement-side data accumulation part, and to transmit the data accumulated in the control-side data accumulation part or the measurement-side data accumulation part to the SCADA server or the CMS server after recovery of the communication, if there is a failure in communication between the control unit and the SCADA server or between the measurement unit and the CMS server.