Multi-mode operation optimization controlling device of variable pitch wind turbine based on time series analysis and operation method thereof

Abstract

Provided is a multi-mode operation optimization controlling device of a variable pitch wind turbine based on time series analysis and an operation method thereof. The multi-mode operation optimization controlling device of variable pitch wind turbine based on time series analysis comprises a human interface module, a modal perception module, a timing analysis module, a module for time series statistics recording, an online identification module of a variable pitch system, a parameter optimization module of a controller, a fuzzy self-tuning multi-mode PID controlling system module, a calculating module for control performance. From a systemic level, the invention includes the steps of categorizing various devices contained in the variable pitch wind power generation system as 'assembly' by zones and functions, wherein the assembly is regarded as fundamental elements and used for building the modal perception module; time series analyzing for the modal perception module in the transient process of various modal switching on the basis of the assembly; obtaining the time series statistic data through the time series analyzing during the transient process of the various modal switching; online identifying and controller parameter optimizing for the various pitch system utilizing the time series statistics; synthesizing the optimized controlling parameter through the fuzzy self-tuning multi-mode PID controlling system, the step that eventually realizes the optimal performance of the variable pitch system under full working conditions.

Description

Technical field [0001] The invention belongs to the technical field of wind power generator operation control, and in particular relates to a variable-pitch wind turbine multi-modal operation optimization control device and an operation method based on time sequence analysis. Background technique [0002] There are many control problems in the operation of variable pitch wind power generation system. The reasons for these problems are mainly due to the inherent characteristics of the controlled object such as time delay, nonlinearity, parameter perturbation, and limited communication. In the actual wind power generation process, the application of new theories and new methods in the control field for the above-mentioned problems is not satisfactory. The reason is that on the one hand, the implementation cost of complex theories and methods is high and the compatibility with industrial control equipment is poor; on the other hand, the research results of the internal characterist...

AI Technical Summary

Problems solved by technology

[0004] The structure of the variable pitch wind turbine is complex, and its function changes with the mode switching; its mode switching often has strong randomness

The multi-modal process control of variable-pitch wind turbines is a global control problem at the system level. Traditional control strategies focus more on the dynamic and static performance of local objects rather than the stability and rapidity of system mode transitions. Quick elimination of deviation without paying attention to the adjustment of the control timing, so it is often difficult to meet the control requirements

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