Method of and article of manufacture for determining probability of avian collision
View Patent ↗A method of calculating probability of collision by birds within a wind park includes modeling a wind turbine to create a wind-turbine model, modeling a challenged bird to create a challenged-bird model, modeling a wind park to create a wind-park model, the wind park comprising at least one of the wind turbine, and calculating a probability of wind-turbine collision by the challenged bird. The step of calculating includes using the wind-turbine model, the challenged-bird model, and the wind-park model. A method for calculating a probability of collision by animals other than birds with structures including, but not limited to, wind turbines, is also disclosed.
1. A method of calculating probability of collision by birds within a wind park, the method comprising:
modeling a wind turbine to create a wind-turbine model;
modeling an approaching bird to create an approaching-bird model;
modeling a wind park to create a wind-park model, the wind park comprising more than one wind turbine;
calculating a probability of wind-turbine collision by the approaching bird;
conveying the probability of wind-turbine collision;
wherein the step of calculating comprises using the wind-turbine model, the approaching-bird model, and the wind-park model; and
wherein the step of modeling the wind turbine comprises modeling a rotor and at least one of a nacelle, a monopole, and a hub.
2. The method of claim 1 , wherein the step of modeling the wind turbine comprises:
dimensionally modeling the wind turbine; and
inputting a speed of a rotor of the wind turbine.
3. The method of claim 2 , wherein the step of dimensionally modeling the wind turbine comprises:
inputting a blade depth of the rotor;
inputting a blade width of the rotor; and
modeling a monopole of the wind turbine.
4. The method of claim 1 , wherein the step of modeling the approaching bird comprises:
modeling the approaching bird as a curved surface, and
wherein the approaching-bird model assumes that the approaching bird enters a plane of the rotor of the wind turbine with a belly of the approaching bird facing a hub of the rotor.
5. The method of claim 1 , wherein the step of modeling the wind park comprises modeling a row of the plurality of the wind turbine.
6. The method of claim 5 , wherein the step of modeling the wind park comprises determining a number of rows in the wind park.
7. The method of claim 5 , wherein the step of modeling the wind park comprises determining an inter-wind-turbine distance.
8. The method of claim 1 , wherein the step of calculating the probability of collision by the approaching bird comprises:
calculating a worst-case collision probability per row by the approaching bird; and
calculating a best-case collision probability per row by the approaching bird.
9. The method of claim 8 , wherein:
the step of calculating the worst-case collision probability per row by the approaching bird is performed at a plurality of approaching-bird flight elevations; and
the step of calculating the best-case collision probability per row by the approaching bird is performed at the plurality of approaching-bird flight elevations.
10. The method of claim 1 , wherein the step of calculating the probability of collision by the approaching bird comprises:
calculating a worst-case collision probability by the approaching bird for the wind park; and
calculating a best-case collision probability by the approaching bird for the wind park.
11. The method of claim 10 , wherein:
P wc =1−(1 −P wcr ) row ;
P wc is the worst-case collision probability by the approaching bird for the wind park;
P wcr is the worst-case collision probability by the approaching bird per row; and
row is the number of rows in the wind park.
12. The method of claim 11 , wherein P wc and P wcr are each a function of the approaching-bird flight elevation.
13. The method of claim 1 , wherein the approaching bird is modeled as an attractor.
14. The method of claim 1 , wherein the approaching bird is modeled as an avoider.
15. The method of claim 1 , wherein a non-linear flight path of the approaching bird is simulated by adjusting a flight speed of the approaching bird.
16. An article of manufacture for calculating probability of collision by birds within a wind park, the article of manufacture comprising:
at least one computer readable medium; and
processor instructions contained on the at least one computer readable medium, the processor instructions configured to be readable from the at least one computer readable medium by at least one processor and thereby cause the at least one processor to operate as to:
model a wind turbine to create a wind-turbine model;
model an approaching bird to create an approaching-bird model;
model a wind park to create a wind-park model, the wind park comprising more than one wind turbine;
calculate a probability of wind-turbine collision by the approaching bird;
convey the probability of wind-turbine collision;
wherein the calculation comprises using the wind-turbine model, the approaching-bird model, and the wind-park model; and
wherein the step of modeling of the wind turbine comprises modeling a rotor and at least one of a nacelle, a monopole, and a hub.
17. The article of claim 16 , wherein the processor instructions cause the at least one processor to:
dimensionally model the wind turbine; and
use a speed of a rotor of the wind turbine.
18. The article of claim 17 , wherein the processor instructions are configured to cause the at least one processor to:
use a blade depth of the rotor;
use a blade width of the rotor; and
model a monopole of the wind turbine.
19. The article of claim 16 , wherein the processor instructions are configured to cause the at least one processor to:
model the approaching bird as a curved surface; and
wherein the approaching-bird model assumes that the approaching bird enters a plane of the rotor of the wind turbine with a belly of the approaching bird facing a hub of the rotor.
20. The article of claim 16 , wherein the processor instructions are configured to cause the at least one processor to model a row of the plurality of the wind turbine.
21. The article of claim 20 , wherein the wind-park model comprises a number of rows in the wind park.
22. The article of claim 20 , wherein the wind-park model comprises at least one inter-wind-turbine distance.
23. The article of claim 16 , wherein the processor instructions are configured to cause the at least one processor to:
calculate a worst-case collision probability per row by the approaching bird; and
calculate a best-case collision probability per row by the approaching bird.
24. The article of claim 23 , wherein the processor instructions are configured to cause the at least one processor to:
calculate the worst-case collision probability per row by the approaching bird at a plurality of approaching-bird flight elevations; and
calculate the best-case collision probability per row by the approaching bird at the plurality of approaching-bird flight elevations.
25. The article of claim 16 , wherein the processor instructions are configured to cause the at least one processor to:
calculate a worst-case collision probability by the approaching bird for the wind park; and
calculate a best-case collision probability by the approaching bird for the wind park.
26. The article of claim 25 , wherein:
P wc =1−(1− P wcr ) row ;
P wc is the worst-case collision probability by the approaching bird for the wind park;
P wcr is the worst-case collision probability by the approaching bird per row; and
row is the number of rows in the wind park.
27. The article of claim 26 , wherein P wc and P wcr are each a function of the approaching-bird flight elevation.
28. The article of claim 16 , wherein the approaching bird is modeled as an attractor.
29. The article of claim 16 , wherein the approaching bird is modeled as an avoider.
30. The article of claim 16 , wherein the processor instructions are configured to cause the at least one processor to operate so as to simulate a non-linear flight path of the approaching bird by adjusting a flight speed of the approaching bird.
31. A method of calculating probability of collision by birds with at least one structure, the method comprising:
modeling a structure of the at least one structure to create a structure model;
modeling an approaching bird to create an approaching-bird model;
modeling a structure area to create a structure-area model, the structure area comprising more than one of the at least one structure;
calculating a probability of structure collision by the approaching bird;
conveying the probability of structure collision; and
wherein the step of calculating comprises using the structure model, the approaching-bird model, and the structure-area model.
32. The method of claim 31 , wherein the step of modeling the structure comprises dimensionally modeling the structure.
33. The method of claim 31 , wherein the step of modeling the structure area comprises modeling a row of the at least one structure.
34. The method of claim 33 , wherein the step of modeling the structure area comprises determining a number of rows in the structure area.
35. The method of claim 31 , wherein the step of calculating the probability of collision by the approaching bird comprises:
calculating a worst-case collision probability per row by the approaching bird; and
calculating a best-case collision probability per row by the approaching bird.
36. The method of claim 31 , wherein the step of calculating the probability of collision by the approaching bird comprises:
calculating a worst-case collision probability by the approaching bird for the structure area; and
calculating a best-case collision probability by the approaching bird for the structure area.
37. The method of claim 36 , wherein:
P wc =1−(1− P wcr ) row ;
P wc is the worst-case collision probability by the approaching bird for the structure area;
P wcr is the worst-case collision probability by the approaching bird per row; and
row is the number of rows in the structure area.
38. An article of manufacture for calculating probability of collision by birds within a structure area, the article of manufacture comprising:
at least one computer readable medium; and
processor instructions contained on the at least one computer readable medium, the processor instructions configured to be readable from the at least one computer readable medium by at least one processor and thereby cause the at least one processor to operate as to:
model a structure to create a structure model;
model an approaching bird to create an approaching-bird model;
model the structure area to create a structure-area model, the structure area comprising more than one of the structure;
calculate a probability of structure collision by the approaching bird;
convey the probability of a structure collision; and
wherein the calculation comprises using the structure model, the approaching-bird model, and the structure-area model.
39. The article of claim 38 , wherein the processor instructions cause the at least one processor to dimensionally model the structure.
40. The article of claim 38 , wherein the processor instructions are configured to cause the at least one processor to model the approaching bird as a curved surface.
41. The article of claim 38 , wherein the processor instructions are configured to cause the at least one processor to model a row of the at least one structure.
42. The article of claim 41 , wherein the structure-area model comprises a number of rows in the structure area.
43. The article of claim 38 , wherein the processor instructions are configured to cause the at least one processor to:
calculate a worst-case collision probability per row by the approaching bird; and
calculate a best-case collision probability per row by the approaching bird.
44. The article of claim 38 , wherein the processor instructions are configured to cause the at least one processor to:
calculate a worst-case collision probability by the approaching bird for the structure area; and
calculate a best-case collision probability by the approaching bird for the structure area.
45. The article of claim 44 , wherein:
P wc =1−(1 −P ) row ;
P wc is the worst-case collision probability by the approaching bird for the structure area;
P wcr is the worst-case collision probability by the approaching bird per row; and
row is the number of rows in the structure area.