Abstract: The present invention relates to a ceramic tracing proppant, and belongs to the field of oil and gas exploitation aids. The ceramic tracing proppant of the present invention is mainly prepared from a neutron absorbing material and the following raw materials in parts by weight: 60-90 parts of bauxite, 30-90 parts of kaolin, and 1-5 parts of fluorite. The ceramic tracing proppant of the present invention has a very high compressive strength under a relatively low density, can effectively prop formation cracks, ensure a fracturing effect and provide an efficient channel for oil and gas output, and has a wide raw material source and a relatively low cost. In addition, the neutron absorbing material is used and fused with an existing neutron logging technology, such that permanent tracing can be achieved under non-radioactive conditions, and the crack height can be effectively, accurately, and quantitatively determined.

Abstract: A method, device and system for determining angle-to-wind deviation and correcting angle-to-wind; the method for determining angle-to-wind deviation comprises: obtaining historical operation data of a wind turbine group during a specific time period (S101); determining an angle-to-wind deviation value for each wind speed segment on the basis of the acquired historical operation data (S102); for any wind speed segment, determining the angle-to-wind deviation value on the basis of the actual angle-to-wind measurement value and the output power value of an environmental wind speed value at a time point within the specific time period.

Abstract: A method, device and system for determining angle-to-wind deviation and correcting angle-to-wind; the method for determining angle-to-wind deviation comprises: obtaining historical operation data of a wind turbine group during a specific time period (S101); determining an angle-to-wind deviation value for each wind speed segment on the basis of the acquired historical operation data (S102); for any wind speed segment, determining the angle-to-wind deviation value on the basis of the actual angle-to-wind measurement value and the output power value of an environmental wind speed value at a time point within the specific time period.

Abstract: An LSP establishment method and a network device, where the method includes: generating, by a first network device, a first Path message, where the first Path message carries an address of a second network device, and the first Path message is used to request establishment a first LSP; and sending, the first Path message to the second network device, and establishing the first LSP, where the first Path message further carries an address of a target network device, so that the second network device stitches the first LSP and a second LSP according to the address of the target network device, so as to form a third LSP from the first network device to the target network device. This technical solutions are conducive to implementing convergence of an access network of an IP RAN and an IP backbone network.

Abstract: An LSP establishment method and a network device, where the method includes: generating, by a first network device, a first Path message, where the first Path message carries an address of a second network device, and the first Path message is used to request establishment a first LSP; and sending, the first Path message to the second network device, and establishing the first LSP, where the first Path message further carries an address of a target network device, so that the second network device stitches the first LSP and a second LSP according to the address of the target network device, so as to form a third LSP from the first network device to the target network device. This technical solutions are conducive to implementing convergence of an access network of an IP RAN and an IP backbone network.

Abstract: A portable ground fault circuit breaker includes a main housing. An interior housing in which moving and static contacts are disposed is disposed inside the main housing and includes a base and a base cover. The static contacts are hung in the interior housing. The moving contacts are disposed on an unbalancing moving contact frame. A trip lock is disposed at one end of the moving contact frame and connected to a fasten lock fulfilling the separation and connection of the moving and static contacts. A lower portion of the fasten lock penetrates the base to abut on a tripping solenoid disposed at an exterior bottom of the base. The solenoid and a main control circuit on a circuit board fulfill an electrical connection. A simple structure, a small bulk, use convenience, and a humanized appearance design are the effects.

Abstract: A portable ground fault circuit breaker includes a main housing. An interior housing in which moving and static contacts are disposed is disposed inside the main housing and includes a base and a base cover. The static contacts are hung in the interior housing. The moving contacts are disposed on an unbalancing moving contact frame. A trip lock is disposed at one end of the moving contact frame and connected to a fasten lock fulfilling the separation and connection of the moving and static contacts. A lower portion of the fasten lock penetrates the base to abut on a tripping solenoid disposed at an exterior bottom of the base. The solenoid and a main control circuit on a circuit board fulfill an electrical connection. A simple structure, a small bulk, use convenience, and a humanized appearance design are the effects.