One global precise time and one maximum transmission time

A system for controlling a wind power plant comprising a plurality of nodes and a plurality of data processors distributed in said nodes, the system comprising:

• a synchronizer for synchronizing at least a part of said data processors to at least one reference signal distributed to said data processors from a time synchronization arrangement;
• an associator for associating at least one of said synchronized data processors with a controller node of the plurality of nodes in the wind power plant and associating at least another one of said synchronized data processors with each of a plurality of remote nodes of the plurality of nodes in the wind power plant;
• an establisher for establishing respective transmission time estimates between said controller node and each of said remote nodes;
• an instruction generator for generating an armed control signal comprising an execution instruction associated with a time of execution, the execution instruction defining instructions to be executed by a data processor associated with one of the remote nodes at a time defined by the time of execution;
• a comparing element for comparing the time of execution to the established transmission time estimates to identify at least one of the remote nodes that is capable of receiving the armed control signal before the time of execution;
• and
• a transmitter for transmitting the armed control signal from the controller node to the identified remote node prior to the time of execution by a time interval at least as long as the respective transmission time estimate associated with the identified remote node.