Energy Resource¶

The energy_resource contains information for the wind resource associated with the wind energy system. Required are a name for the energy resource, and a wind_resource definition, detailed below.

Properties¶

nameString: Unique identifier of the wind energy resource.
wind_resourceObject: Nested dictionary structure of the relevant wind energy resource information for the site. Requires either the probability definition or a weibull_a, weibull_k, sector_probability group definition.

wind_resource Properties¶

The plant schema supports many options to define a wind energy resource. Currently required properties include either a probability or a set of weibull_a, weibull_k, and sector_probability, all of which can depend on wind speed, wind direction, and/or position. These requirements are meant to be a bare minimum amount of information required, and severall additional characteristics are supported by the schema. As wind resource data can become quite large, the schema also supports using NetCDF files to contain the large data structures. These requirements and the additional options are detailed below, followed by several example energy_resource definitions. More examples can be found here.

wind_directionArray or Number: Either an array of numbers or a single number representing the wind direction(s).
wind_speedArray or Number: Either an array of numbers or a single number representing the wind speed(s).
wind_turbineArray or Number: Either an array of numbers or a single number representing a specific wind turbine ID.
xArray or Number: Either an array of numbers or a single number representing the x-coordinate(s) at which wind data are defined. The array of numbers can be multi-dimensional, associated with its dependencies.
yArray or Number: Either an array of numbers or a single number representing the y-coordinate(s) at which wind data are defined. The array of numbers can be multi-dimensional, associated with its dependencies.
heightArray or Number: Either an array of numbers or a single number representing the z-coordinate(s) at which wind data are defined. The array of numbers can be multi-dimensional, associated with its dependencies.

probabilityArray: Either a mulit-dimensional array of numbers or a single array of numbers containing the probability for each associated wind condition.
weibull_aArray: Either a mulit-dimensional array of numbers or a single array of numbers containing the Weibull scale for each associated wind condition.
weibull_kArray: Either a mulit-dimensional array of numbers or a single array of numbers containing the Weibull shape for each associated wind condition.
sector_probabilityArray: Either a mulit-dimensional array of numbers or a single array of numbers containing the probability of wind directions.
turbulence_intensityArray: Either a mulit-dimensional array of numbers or a single array of numbers containing the turbulence intensity for each associated wind condition.
shearObject: Nested dictionary object containing information on wind shear. Requires a shear reference height, h_ref, and a shear exponent, alpha.

Examples¶

Uniform Resource¶

In this example, wind directions and associated probabilities are specified, along with a single wind speed and turbulence intensity.

name: IEA Wind Task 37 Plant Energy Resource
wind_resource:
  probability:
    data:
    - 0.025
    - 0.024
    - 0.029
    - 0.036
    - 0.063
    - 0.065
    - 0.1
    - 0.122
    - 0.063
    - 0.038
    - 0.039
    - 0.083
    - 0.213
    - 0.046
    - 0.032
    - 0.022
    dims:
    - wind_direction
  turbulence_intensity:
    data: 0.075
    dims: []
  wind_direction:
  - 0.0
  - 22.5
  - 45.0
  - 67.5
  - 90.0
  - 112.5
  - 135.0
  - 157.5
  - 180.0
  - 202.5
  - 225.0
  - 247.5
  - 270.0
  - 292.5
  - 315.0
  - 337.5
  wind_speed: 9.8

Uniform Weibull Resource¶

In this example, wind directions and associated probabilities are specified, along with Weibull parameters for each wind direction.

name: Hornsrev1 Energy Resource
wind_resource:
  sector_probability:
    data:
    - 0.03597152
    - 0.03948682
    - 0.051673949999999996
    - 0.07000154
    - 0.08364547
    - 0.0643485
    - 0.08643194
    - 0.1177051
    - 0.1515757
    - 0.14737920000000002
    - 0.1001205
    - 0.051659750000000004
    dims:
    - wind_direction
  turbulence_intensity:
    data: 0.075
    dims: []
  weibull_a:
    data:
    - 9.176929
    - 9.782334
    - 9.531809
    - 9.909545
    - 10.04269
    - 9.593921
    - 9.584007
    - 10.51499
    - 11.39895
    - 11.68746
    - 11.63732
    - 10.08803
    dims:
    - wind_direction
  weibull_k:
    data:
    - 2.392578
    - 2.447266
    - 2.412109
    - 2.591797
    - 2.755859
    - 2.595703
    - 2.583984
    - 2.548828
    - 2.470703
    - 2.607422
    - 2.626953
    - 2.326172
    dims:
    - wind_direction
  wind_direction:
  - 0.0
  - 30.0
  - 60.0
  - 90.0
  - 120.0
  - 150.0
  - 180.0
  - 210.0
  - 240.0
  - 270.0
  - 300.0
  - 330.0

IEA Wind Task 37 Case Study 3 Plant Energy Resource¶