The Energy research Centre for the Netherlands (ECN) has completed a 12 month offshore measurement campaign with the ZephIR 300 system as part of a 4 year campaign within the Dutch project “Meteorological Research Wind at Sea” where the ZephIR has been compared against the 108 metre Met Mast IJmuiden (MMIJM) at the ECN Wind Turbine test facility EWTW.
During a 60 week continuous period availability of the ZephIR was measured at over 98%, with the only period of unavailability being attributed to a mast power supply failure from which the ZephIR was being powered. ECN’s initial conclusion is that ZephIR can be considered as a valid stand-alone system for wind resource assessments, especially given the industry’s tendency towards higher hub heights. Measurements at the EWTW and MMIJM are in accordance with IEC 61400-12. All masts are equipped with Thies class 1 cup anemometers and wind vanes as well as WindSensor p2456a cup anemometers. All calibrations are performed in a MEASNET approved wind tunnel and are covered by ISO 17025 ILAC accreditation.
During a 60 week continuous period availability of the ZephIR was measured at over 98%, with the only period of unavailability being attributed to a mast power supply failure from which the ZephIR was being powered. ECN’s initial conclusion is that ZephIR can be considered as a valid stand-alone system for wind resource assessments, especially given the industry’s tendency towards higher hub heights. Measurements at the EWTW and MMIJM are in accordance with IEC 61400-12. All masts are equipped with Thies class 1 cup anemometers and wind vanes as well as WindSensor p2456a cup anemometers. All calibrations are performed in a MEASNET approved wind tunnel and are covered by ISO 17025 ILAC accreditation.