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Yaw Gear Maintenance Service Case Studies

　　At the Yancheng Wind Power Installation Site, 33 GW87/1500 wind turbine units manufactured by Xinjiang Goldwind Science & Technology Co., Ltd. have been installed. Each unit has a capacity of 1.5 megawatts, bringing the total installed capacity to 49.5 megawatts. The turbines were fully commissioned and connected to the grid on April 30, 2015, and have been in operation for seven years to date. Recent inspections revealed that the yaw hydraulic disc brakes of these wind turbines exhibit oil leakage, and oil contamination on the yaw brake discs has led to vibrations, unusual noises, and wear during the yaw braking process. A statistical analysis indicates that 20 turbines are particularly affected. If these abnormal conditions persist for an extended period, they could easily cause damage to the yaw large gear and yaw gearbox, increasing downtime and maintenance costs. Moreover, such issues pose a fire hazard and compromise the operational safety of the turbines.

　　In February 2023, the energy technology department conducted an on-site inspection and decided to provide specialized maintenance services for the yaw brakes of the 20 wind turbines at the Yanhu Wind Farm. As of now, the wind farm has not experienced any further malfunctions.

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Brake Replacement and Repair Service Case Studies

The Datang Dabancheng Wind Farm is affiliated with Datang Urumqi Dabancheng Wind Power Development Co., Ltd. The wind farm has a total installed capacity of 48 MW and comprises 24 units of the Shanghai Electric W2000C-87-70 model.

Yaw Gear Maintenance Service Case Studies

Thirty-three GW87/1500 wind turbine units manufactured by Xinjiang Goldwind Science & Technology Co., Ltd. have been installed at the Salt Lake Wind Farm. Each unit has a capacity of 1.5 megawatts, for a total installed capacity of 49.5 megawatts.

Yaw Brake Rotor Repair Service Case

The Yandun Wind Farm, under the New Energy Branch of Huadian Xinjiang Power Generation Co., Ltd., is located in the southeastern part of Hami City, approximately 140 km from Hami’s urban area. It is situated within the wind corridor of the Yandun area, which is part of the second-phase project of the Hami Wind Power Base.

Wind Turbine Yaw System Technical Upgrade Service Case

The Datang Shanxi Hongtiguan Wind Farm, which is equipped with 33 Huachuang 1500/93 wind turbines, went into operation in December 2014. Since commissioning, the turbines have consistently experienced abnormal noises and vibrations related to yaw motion, as well as oil leaks from the brakes. Since the wind farm began operations, the original manufacturer of the yaw brakes has been contacted multiple times to come to the site for troubleshooting. The original manufacturer has successively carried out several repairs, including replacing the yaw brake pads, sealing rings in the hydraulic cylinders, and adding an additional set of brakes; however, the issues have yet to be fully resolved.

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Yaw Gear Maintenance Service Case Studies

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