|
Autopilot Windfarm Control
The ADMS provides an autopilot for programmed supervisory shutdown that
is initiated by pre-specified site conditions. The autopilot feature can
be used to shut down selected turbines in high or low winds, or winds
from particular directions. This feature can be used to control site noise
and/or reduce wear and tear on the turbines.
For example: When turbines on a windfarm are closely spaced,
“column winds” (strong winds moving directly parallel to a
row of turbines) cause turbulent tip wakes to flow through the adjacent
turbine rotor. This can cause damaging vibrations in the wind turbine
that result in premature failure of expensive components. The autopilot
will shut down pre-selected turbines, under pre-selected conditions, and
then restart them when acceptable conditions have returned, thereby minimizing
stress on the turbines and reducing windfarm maintenance.
The autopilot feature can also be utilized to reduce noise.
Under certain low-wind conditions, a specific turbine (or array) might
disturb a nearby neighbor if its noise is considered unacceptably louder
than ambient. In this circumstance, autopilot can shut down pre-selected
turbines without sacrificing overall power production, and then restart
them when the wind increases to a reasonable, and profitable, level. |
|
|