A method and system for wind turbine foundation temperature monitoring and stress monitoring

The intelligent monitoring system, which combines distributed optical fiber and infrared temperature sensors with fiber Bragg grating strain sensors, solves the problem of lagging temperature and stress monitoring in wind turbine foundation construction in high-altitude and cold regions. It enables high-precision real-time monitoring and risk warning of concrete, optimizes the construction process, and improves construction safety and efficiency.

CN121480170BActive Publication Date: 2026-06-09INNER MONGOLIA JINGNENGCHA YOUHOUQI NEW ENERGY CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INNER MONGOLIA JINGNENGCHA YOUHOUQI NEW ENERGY CO LTD
Filing Date
2025-11-06
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

When constructing foundations for high-power wind turbine generators in cold regions, existing temperature and stress monitoring methods suffer from slow response, limited monitoring points, and inability to record continuously. This makes it difficult to accurately perceive and dynamically control temperature changes and stress evolution throughout the entire life cycle of concrete. Furthermore, the lack of intelligent analysis and early warning mechanisms leads to potential hazards such as foundation cracking and structural instability.

Method used

By combining distributed fiber optic temperature sensors and infrared temperature sensors with fiber Bragg grating strain sensors, a temperature gradient distribution module, a temperature fluctuation mapping module, a strain sensing module, a situation prediction module, and a risk prediction module are constructed. Through finite element numerical simulation and machine learning algorithms, concrete temperature and strain are monitored in real time, a dynamic construction risk level curve is generated, and intelligent wind turbine construction optimization is carried out.

Benefits of technology

It enables high-precision monitoring of the internal temperature and strain of concrete, identifies potential crack risks in advance, optimizes the construction process, improves construction safety and efficiency, and ensures the long-term stability of the wind turbine foundation.

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Abstract

This invention relates to the field of construction monitoring technology, and particularly to a method and system for monitoring temperature and stress in wind turbine foundations. The method includes the following steps: acquiring monitoring signals of concrete hydration heat release, performing temperature gradient distribution mining and finite element numerical simulation, and constructing a temperature evolution model of the concrete pouring process; obtaining concrete surface temperature monitoring parameters, calculating surface temperature at multiple time points, and mapping the surface environment temperature fluctuations to the concrete pouring process temperature evolution model to construct a real-time regional temperature twin model; identifying strain state sensing parameters during concrete pouring, performing multi-scale spectral decomposition, and then stripping temperature-strain signals to obtain pure mechanical strain component characteristics; and performing internal microscopic pore structure analysis based on the pure mechanical strain component characteristics to generate concrete condition prediction results. This invention improves the intelligence level of the entire wind turbine foundation construction stage, enhancing construction efficiency and safety.
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