Abstract: An object of the present disclosure is to perform appropriate communication quality control even when a terminal out of management of a controller is connected to an access point. The present disclosure is a control system for controlling traffic of a wireless network, the control system including: a terminal and an access point that mutually transmit a packet via the wireless network; and a controller that performs transmission control with respect to the terminal and the access point, in which the controller notifies the access point of information of a terminal under management of the own device, and the access point collates information of the terminal a notification of which has been given with information of a terminal connected to the own device, and suppresses notification of transmission permission to an unmanaged terminal different from a terminal under management of the controller.

Abstract: In a main bearing replacement method for a wind turbine power generation facility including a nacelle, a rotor head rotatably supported by the nacelle, a drive shaft to which rotation of the rotor head is transmitted, a main bearing disposed between the rotor head and the nacelle, and a coupling connecting the rotor head and the drive shaft on a radially inner side of the main bearing, the wind turbine power generation facility includes a main bearing sleeve fitted and fixed to an inner ring of the main bearing and mounted with the rotor head, and the main bearing is replaced at least while the main bearing sleeve is fitted and fixed to the inner ring of the main bearing.

Abstract: In a main bearing replacement method for a wind turbine power generation facility including a nacelle, a rotor head rotatably supported by the nacelle, a drive shaft to which rotation of the rotor head is transmitted, a main bearing disposed between the rotor head and the nacelle, and a coupling connecting the rotor head and the drive shaft on a radially inner side of the main bearing, the wind turbine power generation facility includes a main bearing sleeve fitted and fixed to an inner ring of the main bearing and mounted with the rotor head, and the main bearing is replaced at least while the main bearing sleeve is fitted and fixed to the inner ring of the main bearing.

Abstract: A method for lifting/lowering a long object in a wind power generating apparatus which includes a rotatably disposed rotor head, the rotor head having an openable and closable opening which causes an interior space of the rotor head and an exterior of the rotor head to communicate with each other, the interior space being disposed with a long jig for hanging the long object, the method includes a horizontal movement step of moving the long object in a horizontal attitude along a horizontal direction to be close to the opening or to be away from the opening in the interior space, an attitude change step of changing an attitude of the long object between the horizontal attitude and a vertical attitude vertically above the opening in the interior space, and a lifting/lowering step of lifting/lowering the long object in the vertical attitude while hanging the long object from the jig.

Abstract: A reinforcement object is reinforced without being carried out from a wind turbine power generation facility. A method of remodeling a wind turbine power generation facility includes: a carry-in step of carrying a reinforcement member into a hub through an opening portion which has a smaller dimension than a reinforcement object inside the wind turbine power generation facility and which brings into communication inside of the hub and outside of a front side of the wind turbine power generation facility, the reinforcement member having a smaller dimension than the opening portion; and a reinforcement step of processing the reinforcement object inside the hub, and reinforcing the reinforcement object by using the reinforcement member carried into the hub.

Abstract: A reinforcement object is reinforced without being carried out from a wind turbine power generation facility. A method of remodeling a wind turbine power generation facility includes: a carry-in step of carrying a reinforcement member into a hub through an opening portion which has a smaller dimension than a reinforcement object inside the wind turbine power generation facility and which brings into communication inside of the hub and outside of a front side of the wind turbine power generation facility, the reinforcement member having a smaller dimension than the opening portion; and a reinforcement step of processing the reinforcement object inside the hub, and reinforcing the reinforcement object by using the reinforcement member carried into the hub.

Abstract: In the aspect of the present invention, an installing a wind turbine is achieved by forming a blade assembly in which a plurality of blades are attached to a rotor head, by attaching a suspension structure to the rotor head, by lifting the blade assembly through the suspension structure by a first crane, and by installing the blade assembly to a nacelle of a wind turbine tower.

Abstract: In the aspect of the present invention, an installing a wind turbine is achieved by forming a blade assembly in which a plurality of blades are attached to a rotor head, by attaching a suspension structure to the rotor head, by lifting the blade assembly through the suspension structure by a first crane, and by installing the blade assembly to a nacelle of a wind turbine tower.