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

A technology of speed regulation system and control law, applied in the field of hydropower generation, can solve the problem of high computational complexity and achieve the effect of improving computational efficiency

Active Publication Date: 2021-03-09
CHINA YANGTZE POWER +2
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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

Method used

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

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Embodiment

[0080] The hydraulic turbine speed regulation system includes the controller, the electro-hydraulic servo system, the water passing system, the water turbine, the generator and the load; among them, the electro-hydraulic servo system, the water passing system, the water turbine, the generator and the load constitute the controlled object. In this embodiment, for the water system, a one-dimensional transient flow characteristic line method is used to construct a one-dimensional water system model; for a water turbine, a three-dimensional water turbine internal flow model is constructed using computational fluid dynamics (CFD); The piping system made up of other components uses the existing 1D model.

[0081] like Figure 5 As shown, the optimization method of this embodiment is a multi-objective particle swarm optimization method, and the particle swarm optimization method is specifically as follows:

[0082] (1) Algorithm initialization;

[0083] Set algorithm parameters, in...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F30/17G06N3/04G06N3/08G06T17/00
CPCG06F30/20G06F30/17G06T17/00G06N3/08G06F2111/10G06N3/045Y02E10/20
Inventor 罗红俊李超顺金学铭张官祥马龙杨廷勇乐绪鑫张楠张友江陈绪鹏何宏江郑伟杨忠王永伟喻小琴
Owner CHINA YANGTZE POWER
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