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Abstract
The technically and efficient power source, wind power is the fastest developing and most reliable renewable energy resource among them. The renewable source of the wind energy system is based on Doubly-Fed Induction Generator (DFIG). The transmission systems have numerous terminals in the receiving-end grid, which can not only perform power cross-zone allocation through DC transmission but also establish synchronous interconnection with the regional power grid through AC transmission. The AC-AC converter in the rotor circuit of a doubly-fed induction machine has long been a standard drive choice for high-power applications with a limited speed range. At any practical wind speed, the variable frequency rotor voltage allows the rotor speed to be adjusted to match the optimum operating point. These benefits include synchronous speed for emergency acceleration, low distortion currents provided to the supply, and the capacity to manage the system power factor, for fault overload in wind power transmission systems, the high-proportion control has been placed in an optimal tracking controller.