Pitch and torque instruction processing system of main control system of wind turbine

Abstract

The invention discloses a pitch and torque instruction processing system of a main control system of a wind turbine. The pitch and torque instruction processing system comprises a controller input unit, a pitch control unit and a torque control unit; the controller input unit comprises a generator rotating speed module, a rotating speed setting module and a switching control module; the pitch control unit comprises a pitch controller and a pitch amplitude limiting module; the torque control unit comprises a torque controller and a torque amplitude limiting module; and the generator rotating speed module and the rotating speed setting module are used for obtaining rotating speed deviation, the switching control module is used for determining the rotating speed deviation to serve as input ofthe pitch controller or the torque controller, a pitch instruction or a torque instruction is obtained through input determination, and therefore pitch changing or flow changing is achieved. According to the pitch and torque instruction processing system, smooth switching of the wind turbine under various power generation working conditions can be achieved, and maximum power operation of the windturbine under various working conditions is achieved; meanwhile, the wind turbine can be prevented from frequently entering and exiting from a rated working point through the switching control module, the reliability of the wind turbine is improved, and the service life of the wind turbine is prolonged.

Description

technical field [0001] The invention relates to the technical field of wind power generation electrical control, in particular to a wind power main control pitch and torque command processing system. Background technique [0002] Wind energy is a clean and renewable resource. In recent years, wind power technology has developed rapidly, and the installed capacity of onshore wind power and offshore wind power has risen rapidly. With the continuous development of the wind power industry, on the one hand, wind turbines are required to meet the needs of grid parity, and on the other hand, wind turbines are required to be safe and reliable. The wind power main control system is at the highest level of the wind turbine local control system, and is responsible for information exchange with the wind farm-level control system externally, and is responsible for the upper control of the unit internally. [0003] The wind turbine electronic control system mainly includes three subsyste...

AI Technical Summary

Problems solved by technology

[0010] In order to solve the problem of unsmooth switching of wind turbines between different working modes, and to realize the maximum power output of wind turbines in various working modes, the present invention proposes a main control pitch and torque command processing system for wind turbines

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