Method for windmill farm monitoring

US11339763B2 · kind B2 · utility

Assignee

• Hitachi Energy Switzerland AG · CH

Inventors

• Moncef Chioua · Heidelberg, DE
• Ni Ya Chen · Beijing, CN
• Rongrong Yu · Beijing, CN
• Yingya Zhou · Shanghai, CN
• Yao Chen · Shanghai, CN

Key dates

• Filing date: Dec 1, 2017
• Grant date: May 24, 2022
• Expiry date: Jul 8, 2039

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02B10/30
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method for monitoring turbines of a windmill farm includes: providing a global nominal dataset containing frame data of the turbines of the windmill farm and continuous reference monitoring data of the turbines for a first period in a fault free state, the reference monitoring data including at least two same monitoring variables for each turbine; building a nominal global model based on the global nominal dataset which describes the relationship in between the windmill turbines and clustering the turbines according thereto; assigning the data of the global nominal dataset to respective nominal local datasets according to the clustering; and building a nominal local model for the turbines of each cluster based on the respective assigned nominal local datasets, the nominal local model being built such that a nonconformity index is providable which indicates a degree of nonconformity between data projected on the local model and the model itself.