| 主权项 |
1. A method for operating a component of a wind turbine by determining an equivalent mechanical load of the component, which component is subjected to a dynamic mechanical loading during operation, the method comprising:
measuring a first measurement value of the mechanical load of the component during the operation of the component, operating at least one data processor for:
comparing the first measurement value with a first reference value,first updating at least one count value representing the number of load half-cycles of the component based upon a result of the comparing,wherein the load half-cycles have a predetermined range of mechanical loads, which are measured within a time period prior to the measuring of the first measurement value,determining a first equivalent mechanical load of the component based upon a first updated count value,updating the first reference value to a second reference value based on the result of comparing the first measurement value with the first reference value, measuring a second measurement value of the mechanical load of the component during the operation of the component, operating the at least one data processor for:
comparing the second measurement value with the second reference value,second updating the at least one count value representing the number of load half-cycles of the component based on the result of comparing the second measurement value with the second reference value, wherein the load half-cycles have a predetermined range of mechanical loads, which are measured within a time period prior to the measurement of the second measurement value,determining a second updated equivalent mechanical load of the component based on the second updated count value,further comparing the first measurement value with a further first reference value,further first updating at least one further count value representing the number of further load half-cycles of the component based on the result of further comparing, wherein the further load half-cycles have a further predetermined range of mechanical loads, which are measured within the time period prior to the measurement of the first measurement value and which comprise a lower bound being higher than a lower bound of the predetermined range of mechanical loads, andadapting the first updated count value,wherein determining the first equivalent mechanical load of the component is based on the adapted first updated count value and on the further first updated count value, triggering an indicative signal if the first updated equivalent load and/or the second updated equivalent load exceeds a preset threshold value, and adjusting operation of the component based on the triggered indicative signal. |
