Response to voltage drops (section 6.5, 7.5 of IEC61400-21 Rev. 2) Reference to section Reported / # Requirement from standard Finding in standard Inspected Are the tests regarding response to voltage 6.5.1 6.5 drops performed on the complete wind turbine? Is the response of the wind turbine to temporary voltage stated for the wind 6.5.2 6.5 &7.5 turbine operating at a) between 0,1 Pn and 0,3 Pn and b) above 0,9 Pn ? Does the stated response include results from 6.5.3 6.5 2 consecutive tests of each case (VD1-VD6 in Table 1)? Does the stated response include time-series of active power, reactive power, active 6.5.4 6.5 & 7.5 current, reactive current and voltage at wind turbine terminals? Do the time-series of active power, reactive power, active current, reactive current and voltage at wind turbine terminals correspond 6.5.5 6.5 & 7.5 to the time shortly prior to the voltage drop and until the effect of the voltage drop has abated?
Response to voltage drops (section 6.5, 7.5 of IEC61400-21 Rev. 2) # Reference to section in standard Requirement from standard Reported / Inspected Finding 6.5.1 6.5 Are the tests regarding response to voltage drops performed on the complete wind turbine? 6.5.2 6.5 &7.5 Is the response of the wind turbine to temporary voltage stated for the wind turbine operating at a) between 0,1 Pn and 0,3 Pn and b) above 0,9 Pn ? 6.5.3 6.5 Does the stated response include results from 2 consecutive tests of each case (VD1-VD6 in Table 1)? 6.5.4 6.5 & 7.5 Does the stated response include time-series of active power, reactive power, active current, reactive current and voltage at wind turbine terminals? 6.5.5 6.5 & 7.5 Do the time-series of active power, reactive power, active current, reactive current and voltage at wind turbine terminals correspond to the time shortly prior to the voltage drop and until the effect of the voltage drop has abated?
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