The present invention relates to a distributed fault-tolerant control system for a modularized wind turbine or wind power plant system comprising sub-assemblies, the control system comprising 1) fault-tolerant control means adapted to generate control set-points and/or data values, said fault-tolerant control means being distributed in sub-assemblies in accordance with the modularization of the wind turbine or wind power plant system, and 2) fault-tolerant communication network for transmitting control set-points and/or data values at essentially the same time to a plurality of nodes in the distributed control system, said plurality of distributed nodes being capable of selecting a valid transmission package out of two or more transmission packages provided on the fault-tolerant communication network.
