Control law optimization method and device for water turbine speed regulation system

Abstract

The invention discloses a control law optimization method and device for a water turbine speed regulation system, and belongs to the technical field of hydroelectric generation, and the method specifically comprises the steps: building a target function of a rotating speed, a swing degree and a rotating wheel stress based on a neural network agent model of the water turbine speed regulation systemby adopting a guide vane control law as a variable; and solving the objective function by adopting a multi-objective optimization method to obtain the optimal control rule of the unit. The neural network agent model of the water turbine speed regulation system is obtained based on a one-dimensional transient flow characteristic line method, a neural network and a hydropower station transition process numerical simulation technology. According to the control law optimization method and device for the water turbine speed regulation system, the dynamic characteristics of the unit transition process are accurately reflected, and the calculation efficiency of the algorithm is remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of hydropower generation, and more particularly, relates to a control law optimization method and device of a hydraulic turbine speed regulating system. Background technique [0002] In recent years, my country's hydropower units are developing in the direction of large-scale and complex. They have the characteristics of large unit capacity, increasingly complex structure, high degree of integration, complex water diversion system, huge water flow inertia, and close hydraulic power coupling. The dynamic response capability of peak shaving and emergency backup is high, therefore, higher requirements are put forward for the control performance of the regulating system of the hydroelectric unit. Based on the above reasons, it is necessary to propose a reasonable control method for large-scale hydropower units to make the transition process of the unit more stable, to significantly reduce the dynamic stress of th...

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Problems solved by technology

[0004] In view of the defects of the prior art, the object of the present invention is to provide a method and device for optimizing the control law of the speed regulating system of a water turbine, aiming at solving the problem of obtaining the optimization of the opening and closing law of the traditional guide vane by using the control method of the existing hydroelectric unit regulating system. There is a problem of high computational complexity

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