IEEE 1834-2019 pdf free download – IEEE Standard for Technology Supervision Code for Wind Turbine Rotor Systems.
4. General The wind rotor system of the wind turbine generator system (WTGS) includes blade, hub, pitch system, and yaw system. The defects of hub, blade, and other components should be tested and judged by nondestructive test, and technical repair shall be made correspondingly.
The surface texture, material aging, and mechanical property deterioration of the components should be inspected, and the damage status of the materials should be evaluated. If components need test in batch, the component(s) shall have the batch number and be delivered with the corresponding test report.
If the component needs testing one by one, the component shall be given a unique number and be delivered with the corresponding test report. Quality confrmation shall be done before installation, which includes two main processes: manufacture and transport. The component quality test shall be done within the factory.
All the components shall be packed and transported carefully, keeping the original condition. Superfcial defect and document check shall be taken before installation. The bolts shall be fastened as per the fastening torque values (process requirements) from the supplier. After the occurrence of extreme weather or wind speed, supervision frequency of the wind rotor system shall be increased according to the real condition. Icing inspection should be carried out in the weather and areas where the blades are prone to icing.
After component replacement event, the replacing component shall be taken as new component till adjustment, the technical supervision frequency should be increased compared to previous assembly.
Technical supervision documents shall be established and kept thoroughly. The documents shall include all records within the supervision scope in the process of installation, repair, and technical reconstruction.
5. Blade supervision
The static test, fatigue test, natural frequency measurement, modal analysis, and other type tests shall be completed, and the test results shall meet the requirements of IEC 61400-23:2014. The reports shall involve strength (hardness) inspection, ultrasonic test, infrared imagery analysis, acoustic analysis, blade surface roughness test, trailing edge thickness measurement and blade lightning protection test, and the test results shall meet the requirements of IEC 61400-1:2014 and IEC 61400-24:2010. The acoustic noise measurement and analysis shall be done according to IEEE 2400:2016.
Before blade installation, complete records of blade length, mass, gravity, and gravity center should be inspected. The mount match point, lifting points, and gravity center of the blades shall be marked clearly.IEEE 1834 pdf download.