Guohua Energy Deploys SKF Remote Monitoring to Drive Turbine Reliability

Guohua Energy Investment Company, the fourth‑largest wind farm operator in China, set an ambitious goal in 2010: grow its installed capacity to 2,000 MW, a 50 % increase in one year. Achieving this required more than just new turbines; it demanded a proactive maintenance strategy that kept machines running while minimizing downtime.

In 2008, Zhou Weihua, Deputy General Manager of Production, began a comprehensive review of Guohua’s maintenance approach. He sought the most reliable, data‑driven method to assess turbine health quickly and accurately. Relying solely on temperature checks of gearbox oil and generator bearing housings proved inadequate for the diverse turbine fleet across China’s varying wind regimes.

Exploring On‑Line Monitoring

Zhou turned to on‑line vibration monitoring, a proven technology in North America, Europe, and Australia. By continuously capturing vibration signatures from critical components, this method can pinpoint emerging issues, quantify severity, and enable scheduled, rather than reactive, maintenance—an essential capability for a wind portfolio as large as Guohua’s.

Learning from Germany

Seeking first‑hand insight, Zhou visited SKF’s Intelligence Centre Wind (ICW) in Hamburg. SKF, the world’s leading bearing specialist, had already demonstrated remote, on‑line monitoring across more than 600 turbines worldwide. The Hamburg visit showcased the depth of SKF’s diagnostic expertise and the clarity of its real‑time data analysis, giving Zhou confidence to pilot the system in China.

Field Trials Across Three Wind Farms

In 2009, 11 SKF WindCon systems were installed at three Guohua sites—Jiangsu, Shandong, and Inner Mongolia. Each turbine’s data fed into a local server, then relayed via the Internet to an SKF server in Shanghai’s Remote Condition Monitoring Centre. Results were reported monthly to site managers and Zhou, using a color‑coded grid (green = OK, yellow = warning, red = critical) and detailed vibration spectra.

Within six months, the system flagged a severely damaged generator gearbox bearing at the Inner Mongolia farm, allowing Guohua to schedule a replacement with minimal production loss.

Scale‑Up and Future Plans

Buoyed by success, Guohua installed 58 additional WindCons and placed orders for 280 more units for turbines coming online in 2010. Zhou plans to establish a Beijing remote monitoring center, leveraging SKF’s diagnostic expertise to deepen Guohua’s in‑house vibration analysis capabilities.

Through this partnership, Guohua Energy is setting a new standard for turbine reliability, translating data into actionable maintenance and safeguarding its bottom line across a 2,000‑MW wind portfolio.