Energy-saving operation device of wind turbine with fault diagnosis and predictive maintenance

CN122236611APending Publication Date: 2026-06-19LINCANG TEACHERS COLLEGE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LINCANG TEACHERS COLLEGE
Filing Date
2026-04-20
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing technologies, without the addition of viscosity sensors, cannot reliably characterize changes in the lubrication state of wind turbines and their impact on the lubrication supply capacity of key components, making it difficult to coordinate lubrication safety and operating energy consumption.

Method used

By jointly estimating the lubrication circuit pressure, differential pressure, lubricating oil temperature, and lubrication pump operating parameters, the apparent viscosity of the lubricating oil and contamination and blockage indicators are calculated to form a film adequacy constraint. The operating parameters of the lubrication pump, heater, and cooling system are set collaboratively, and combined with fault diagnosis and predictive maintenance, real-time assessment and optimized control of the lubrication status are achieved.

Benefits of technology

It enables real-time quantitative assessment of lubrication status without the need for viscosity sensors, reducing lubrication risks, optimizing auxiliary machine energy consumption, improving the foresight of fault diagnosis and the interpretability of maintenance decisions, and ensuring safe lubrication and energy-saving operation.

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Abstract

This invention relates to the field of wind turbine generator operation control and condition monitoring technology, and particularly to an energy-saving operation device for wind turbine generators with fault diagnosis and predictive maintenance. The device includes a data acquisition and time alignment module, a sensorless oil state joint estimation module, a film adequacy constraint calculation module, an auxiliary machine energy consumption collaborative control module, a lubrication-related fault diagnosis and predictive maintenance module, a main control linkage energy-saving setting module, and an execution monitoring and rollback module. It collects and aligns operating data, estimates the apparent viscosity and contamination / clogging indicators of the lubricating oil and outputs flow rate estimates, forms film adequacy constraints and outputs auxiliary machine energy consumption settings, outputs diagnostic results and remaining usable life prediction results / uncertainties, generates and issues main control linkage settings, and rolls back to a preset safe lubrication mode in case of an anomaly. This invention triggers a rollback to a safe lubrication mode when constraints are not met or blockage exceeds the threshold.
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