Keywords
Metrología, nacelle, banco de ensayos, medición del par, incertidumbre, turbina eólica, Metrology, nacelle, test bench, torque measurement, uncertainty, wind turbine
A metrological characterization approximation for the new torque measurement system in wind turbines test benches
Abstract
Este artículo presenta la nueva norma de transferencia para las mediciones de par en el rango de MN-m y su caracterización metrológica mediante análisis FEM. Los métodos actuales utilizados para las mediciones de par en dicho rango de medición no son trazables a las normas internacionales; esta situación tiene un profundo impacto en varias industrias, siendo especialmente importante en la generación de energía eólica. Con el fin de mejorar la calidad de las mediciones de par durante las pruebas de las turbinas eólicas, se ha puesto en marcha el proyecto "EMPIR 14IND14-mediciones de par en el rango de MN-m", financiado con fondos europeos. El objetivo de este proyecto es desarrollar nuevas normas de transferencia para obtener mediciones de par precisas, fiables y trazables en las instalaciones utilizadas para probar el rendimiento de los aerogeneradores. Dentro de este proyecto, el CEM (Centro Español de Metrología) ha diseñado un nuevo patrón de transferencia para las mediciones de par denominado "sistema de palanca de fuerza", en el que se han utilizado tecnologías de modelado y simulación no sólo para diseñar y probar el sistema propuesto, sino también para permitir la estimación de su futura incertidumbre asociada incluso antes de su fabricación. Los resultados han demostrado que el comportamiento metrológico esperado del sistema diseñado mejorará la precisión de los métodos de medición actuales y garantizará la trazabilidad de las mediciones de par. La mejora de la fiabilidad de las medidas de par permitirá diagnosticar mejor su comportamiento y mejorar la eficiencia de la generación de energía eólica
This paper presents the new transfer standard for torque measurements in the MN·m range and its metrological characterization through FEM analyses. Current methods used for torque measurements in such measuring range are not traceable to international standards; this situation has a deep impact in several industries, being especially important in wind energy generation. In order to improve the quality of torque measurements during wind turbine tests, the “EMPIR 14IND14-torque measurements in the MN·m range,” a new European funded project has been launched. This project aims to develop new transfer standards for obtaining accurate, reliable, and traceable torque measurements in the facilities used for testing wind turbine's performance. Within this project, CEM (Spanish Center of Metrology) has designed a new transfer standard for torque measurements named “force lever system.” Modeling and simulation technologies have been used not only for designing and testing the proposed system but also for enabling the estimation of its future associated uncertainty even before it is being manufactured. The results have proven that the expected metrological behavior of the designed system will ameliorate the accuracy of current measuring methods while ensuring torque measurements' traceability. The improvement of the torque measurements' reliability will make it possible to better diagnose its behavior and to improve wind energy generation efficiency
This paper presents the new transfer standard for torque measurements in the MN·m range and its metrological characterization through FEM analyses. Current methods used for torque measurements in such measuring range are not traceable to international standards; this situation has a deep impact in several industries, being especially important in wind energy generation. In order to improve the quality of torque measurements during wind turbine tests, the “EMPIR 14IND14-torque measurements in the MN·m range,” a new European funded project has been launched. This project aims to develop new transfer standards for obtaining accurate, reliable, and traceable torque measurements in the facilities used for testing wind turbine's performance. Within this project, CEM (Spanish Center of Metrology) has designed a new transfer standard for torque measurements named “force lever system.” Modeling and simulation technologies have been used not only for designing and testing the proposed system but also for enabling the estimation of its future associated uncertainty even before it is being manufactured. The results have proven that the expected metrological behavior of the designed system will ameliorate the accuracy of current measuring methods while ensuring torque measurements' traceability. The improvement of the torque measurements' reliability will make it possible to better diagnose its behavior and to improve wind energy generation efficiency
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