Cdf Ke Yuan

Goldwind Science & Technology Co., Ltd.

Jiangtao Wen

Yuxing Han

Jingyuan Wang

Yan Li

Qiang Li

Jun Zhang

Mingrui Qi

Pin Lv

Honghao Shi

This application discloses a method, device, and apparatus for maintaining a wind turbine generator plant, which relates to the field of wind power generation. The method includes determining a failure of the wind turbine generator plant when the wind turbine generator plant enters a shutdown maintenance mode; determining a maintenance wind speed corresponding to the failure; adjusting one of blades of the wind turbine generator plant to reach a predetermined azimuth angle and lock an impeller of the wind turbine generator plant to maintain the wind turbine generator plant in a case where the failure belongs to a first type of failure and a real-time wind speed obtained is less than or equal to the maintenance wind speed corresponding to the failure, the first type of failure comprising a failure that requires to lock the impeller for maintenance and the predetermined azimuth angle being a different integral multiple of 30°.

Shutdown maintenance method and apparatus for wind turbine, and device following a failure

An epidemic forecasting model for policies of prevention, control and isolation is disclosed, including: establishing a SUEIR model; dividing, by the SUEIR model, population according to an ability of infection and a way of infection; classifying patients further into three states: unconfirmed, confirmed but not in isolation, and confirmed and in isolation; calculating a number of people in each state in the future by using the SUEIR model; and accumulating the number of people in the confirmed state to realize the forecasting of the number of confirmed cases. The disclosure not only accurately forecasts the number of confirmed cases, but also explains various policies of prevention and control.

Epidemic forecasting model for policies of prevention, control and isolation

A congestion control mechanism for TCP communication sessions is described. The congestion control mechanism adjusts the size of the congestion window based on a number of parallel virtual TCP Hybla connections. The number of parallel virtual TCP Hybla connections used to determine the congestion window can be dynamically adjusted. The enhanced TCP Hybla congestion control mechanism provides improved throughput for heterogenous networks having a high latency link and having possible packet loss.

TCP congestion control for large latency networks

A congestion control mechanism for TCP communication sessions is described. The congestion control mechanism adjusts the size of the congestion window based on a number, N, of parallel virtual connections. The number N of parallel virtual connections used to determine the congestion window is dynamically adjusted based on an estimation of the network condition.

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Beijing, China

Jingyuan Wang