大家一起学标准之IEC61400-1(8）

V0

limit wind speed in wind speed distribution model

风速分布模型中的风速限值

[m/s]

V50

extreme wind speed (averaged over 10 minutes) with a recurrence interval of 50 years

50 年重现期 10 分钟平均极端风速

[m/s]

V100

extreme wind speed (averaged over 10 minutes) with a recurrence interval of 100 years

100 年重现期 10 分钟平均极端风速

[m/s]

Vout

cut-out wind speed

切出风速

[m/s]

Vr

rated wind speed

额定风速

[m/s]

Vref

reference wind speed

参考风速

[m/s]

Vref,T

reference wind speed for tropical-like conditions

台风工况参考风速

[m/s]

V(y,z,t)

longitudinal wind velocity component to describe transient horizontal wind shear

用于描述瞬态水平风切变的纵向风速分量

[m/s]

V(z,t)

longitudinal wind velocity component to describe transient variation for extreme gust and shear conditions

用于描述极端阵风、风切变工况瞬态变化的纵向风速分量

[m/s]

x,y,z

co-ordinate system used for the wind field description; along wind (longitudinal), across wind (lateral) and height respectively

风场描述坐标系；分别代表顺风向（纵向）、横风向（侧向）、高度方向

[m]

ZNT

life factor for contact stress for reference test conditions

基准试验条件下接触应力寿命系数

[-]

zhub

hub height of the wind turbine

风机轮毂高度

[m]

zr

reference height above ground

离地参考高度

[m]

z0

roughness length for the logarithmic wind profile

对数风廓线地表粗糙度长度

[m]

alpha

wind shear power law exponent

风切变幂律指数

[-]

beta

parameter for extreme direction change model

极端风向变化模型参数

[-]

delta

coefficient of variation

变异系数

[-]

Gamma

gamma function

伽马函数

[-]

gamma_f

partial safety factor for loads

荷载分项安全系数

[-]

gamma_M

partial safety factor for resistances

抗力分项安全系数

[-]

gamma_n

partial safety factor for consequences of failure

失效后果分项安全系数

[-]

theta(t)

wind direction change transient

瞬态风向变化量

[deg]

theta_cg

angle of maximum deviation from the direction of the average wind speed under gust conditions

阵风工况下风速相对平均风向的最大偏转角

[deg]

theta_eN

extreme direction change with a return period of N years

N 年重现期极端风向变化角度

[deg]

theta_i

slope of fitted plane for ith 30° sector

第 i 个 30° 扇区拟合平面坡度

[deg]

theta_360

slope of the fitted 360° plane

360° 全域拟合平面坡度

[deg]

theta1year,min

minimum ambient temperature to be expected in hourly average

小时平均统计下 1 年一遇最低环境温度

[K]

theta_min,operation

minimum allowable ambient temperature for wind turbine operation

风机运行允许最低环境温度

[K]

Lambda_1

turbulence scale parameter defined as the wavelength where the non-dimensional, longitudinal power spectral density, 

fS1(f)/sigma_1^2

, is equal to 0,05

湍流尺度参数，定义为无量纲纵向功率谱密度

fS1(f)/sigma_1^2=0.05对应的波长

[m]

rho

air density

空气密度

[kg/m³]

sigma

estimated wind speed standard deviation

估算风速标准差

[m/s]

sigma_c

representative ambient turbulence standard deviation

代表性环境湍流标准差

[m/s]

sigma_eff

effective estimated wind speed standard deviation

有效估算风速标准差

[m/s]

sigma_wake

wind speed standard deviation in the wake

尾流区风速标准差

[m/s]

sigma_sigma

standard deviation of estimated wind speed standard deviation 

sigma

估算风速标准差

sigma自身的标准差

[m/s]

sigma}_ETM

extreme ambient turbulence standard deviation

极端环境湍流标准差

[m/s]

sigma_1

hub-height longitudinal wind velocity standard deviation

轮毂高度纵向风速标准差

[m/s]

sigma_2

hub-height lateral wind velocity standard deviation

轮毂高度横向风速标准差

[m/s]

sigma_3

hub-height upward wind velocity standard deviation

轮毂高度竖向风速标准差

[m/s]

Phi

standardized normal probability function

标准正态分布函数

[-]

E[ ]

expected value of parameter inside brackets

括号内参数的数学期望

[-]

Var[ ]

variance of parameter inside brackets

括号内参数的方差

[-]

A

abnormal (for partial safety factors)

异常工况（用于分项安全系数分类）

AC

alternating current

交流电

DC

direct current

直流电

CC

cold climate

寒冷气候

COV

coefficient of variation

变异系数

DLC

design load case

设计载荷工况

DWM

dynamic wake meandering

动态尾流摆动

ECD

extreme coherent gust with direction change

带风向变化的极端相干阵风

EDC

extreme wind direction change

极端风向变化

EOG

extreme operating gust

极端运行阵风

ETM

extreme turbulence model

极端湍流模型

EWM

extreme wind speed model

极端风速模型

EWS

extreme wind shear

极端风切变

F

fatigue

疲劳工况

FMEA

failure mode and effect an alysis

失效模式与影响分析

HV

high voltage

高压

IAC

internal arc classification

内部电弧分级

IC

icing climate

覆冰气候

LTC

low temperature climate

低温气候

LVRT

low voltage ride through

低电压穿越

N

normal and extreme (for partial safety factors)

常规及极端工况（用于分项安全系数分类）

NWP

normal wind profile model

常规风速廓线模型

NTM

normal turbulence model

常规湍流模型

S

special IEC wind turbine class

IEC 特殊风机等级

T

transport and erection (for partial safety factors)

运输安装工况（用于分项安全系数分类）

TSI

terrain slope index

地形坡度指数

TVI

terrain variation index

地形起伏指数

U

ultimate

极限工况

ULS

ultimate limit state

极限承载状态