Reserach On Itegrated Control Of Hydraulic Turbine Based On MATLAB

The hydraulic unit control system is mainly the hydraulic turbine speed control system and the excitation system of the generator,and they are affected by the unit speed and the terminal voltage,and because the speed and the terminal voltage of the unit are in the dynamic process of the hydraulic unit control.Influential,there is a serious coupling relationship,so that the control of the hydraulic unit can not achieve the optimal effect.In order to optimize the effect of the entire control system,it is necessary to perform comprehensive coordinated decoupling control on the two.It is not possible to design the controllers separately,but to design them as a whole.Therefore,this paper is mainly based on the traditional integrated control,using the decoupling theory of P specification to decouple and decoupling the control of hydraulic unit.Firstly,the working principle of the turbine and generator is analyzed in detail.The mathematical model of the governing system and the excitation system is established.Considering the connection between the two models,the mathematical model of the integrated control of the hydropower unit is established.Secondly,because there is a coupling relationship between turbine governing speed and generator excitation,the system is decoupled by using the Qian Xuesen method to design the feedforward compensator.Based on the above comprehensive control mathematical model,a mathematical model of decoupling is established.Finally,using MATLAB,in the Simulink environment,using the module library,build the simulation platform,establish the integrated control model and the decoupled integrated control model,reasonably select the simulation object to carry out the simulation experiment,and simulate the results of various situations.Conduct a comparative analysis.Through the comparative analysis of the simulation results,it can be concluded that the fastness and dynamic performance after decoupling are better than that after decoupling,so the quality of the adjustment is greatly improved.