The present invention relates to a coordinated control method for the
wind power plant of a double-fed fan to participate in the one-time
frequency modulation of a power
system and belongs to the operation and control technical field of the power
system. The method comprises the steps of establishing energy status evaluation indexes and power generation level evaluation indexes for fans; setting a communication
coefficient matrix between fans; measuring the frequency of the
coordination layer of the
wind power plant and generating the reference value of the output power of the
wind power plant; exchanging power generation level evaluation indexes between adjacent fans, conducting the Newton iteration through the outer loop iteration method, and tracking a reference value generated by the
coordination layer; during each iteration step, calculating the approximate Newton direction of the step by each fan through the
inner loop recursion method. In this way, the necessary information is provided for the outer loop iteration operation. According to the technical scheme of the invention, the stored
kinetic energy of a double-fed fan can be fully utilized, and a coordinated
control system is designed to reduce the computational burden of the
coordination layer. Meanwhile, based on the second-order convergence of the distributed Newton method, the rapid primary
frequency modulation of the overall wind power plant is realized. At the same time, the power can be reasonably distributed among fans, so that the
safe operation of the fans is ensured.