What is PD CLC/TS 61400-14- Sound power level and tonality values of wind turbines?
IEC 61400 series covers various aspects of wind turbines.
PD CLC/TS 61400-14 is one of the series of documents that provides guidelines for declaring the apparent sound power level and tonality of a batch of wind turbines. The measurement procedures for apparent sound power level and tonality are defined in IEC 61400-11.
Who is PD CLC/TS 61400-14- Sound power level and tonality values of wind turbines for?
PD CLC/TS 61400-14 on wind turbines is useful to:
- Wind energy generation systems
- Wind power stations
- Transmission system operators (TSOs)
- Distribution system operators (DSOs)
- Environmental research bodies
- Certification and regulatory bodies
Why should you use PD CLC/TS 61400-14-Sound power level and tonality values of wind turbines?
Tonalities are sounds at distinct frequencies peaking above the broadband noise that originates mostly from gearbox vibrations and are subsequently transported to sound emission sites such as the tower or the blades.
Information on the apparent sound power level and tonality of wind turbines is needed by planners, manufacturers, and authorities. At present, wind turbine noise specifications tend to be based on measurement results from a single turbine of a particular make and model, and these are then taken to be representative of these turbines as a whole. Clearly, this is unlikely to be the case, as there will be individual variation between different turbines. At present, wind turbine noise specifications tend to be based on measurement results from a single turbine of a particular make and model, and these are then taken to be representative of these turbines as a whole. Clearly, this is unlikely to be the case, as there will be individual variation between different turbines.
The purpose of PD CLC/TS 61400-14 is to determine declared noise emission values from a sample of turbines of the same type. The declaration can increase the reliability of wind farm planning and facilitate the comparison of apparent sound power levels and tonality values of different types of wind turbines.
Adopting PD CLC/TS 61400-14 can help improve sound power levels and tonality values, which increases the performance and efficiency of wind turbines.
