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A Turbine Regulating System Based on Random Probability Distribution Control

A technology of distributed control and random probability, applied in the direction of control/regulation system, general control system, adaptive control, etc., to achieve the effect of strong versatility and portability

Active Publication Date: 2020-01-17
SHANGHAI DIANJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Especially for the elastic water hammer that is more in line with the actual operation process of the turbine, the stochastic control method for the turbine speed regulation has not yet been developed.

Method used

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  • A Turbine Regulating System Based on Random Probability Distribution Control
  • A Turbine Regulating System Based on Random Probability Distribution Control
  • A Turbine Regulating System Based on Random Probability Distribution Control

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Embodiment Construction

[0045] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0046] The present invention first directly models the speed regulating system of the water turbine through the differential equation based on the affine nonlinear system, so as to establish a simplified dissipation Hamiltonian model of the water turbine system. Then, by using the technique of obtaining the exact stationary solution of dissipative non-integrable Hamiltonian systems, a control method based on probability distribution is designed, and the transition probability density of the controlled system converges to a preset steady state by using the Lyapunov function method. State probability density function value. Concrete implementation steps are described as follows in conjunction with accompanying drawings:

[0047] Step 1: The model c...

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Abstract

The invention discloses a water turbine adjustment system based on random probability distribution control. Firstly, a water turbine speed adjustment system is directly modeled via a differential equation based on an affine nonlinear system, and thus a simplified dissipation Hamiltonian model of a water turbine system is built. Then, a control method based on probability distribution is designed by using a technology of acquiring an exact stationary solution of a dissipation non-integrable Hamiltonian system, and thus a preset stability probability density function value output by the water turbine system can be acquired. In addition, stability analysis of the system is to demonstrate that the transition probability density of a controlled system is convergent to the preset stability probability density function value by using a Lyapunov function method, and system simulation indicates that the provided control strategy can achieve an expected control effect.

Description

technical field [0001] The invention relates to the field of positioning devices, in particular to a water turbine regulation system based on random probability distribution control. Background technique [0002] The hydraulic turbine regulation control system is a kind of power generation equipment widely used in hydropower plants to ensure the safe operation of power generation. Its control of the hydraulic turbine system plays a very critical role in maintaining the stability of the power system. Most of the early hydraulic turbine control system research is based on the assumption of linear models, but the actual hydraulic turbine control system is a nonlinear system. With the development of nonlinear control theory in recent decades, the research of hydraulic turbine control system based on nonlinear model has been widely concerned. [0003] Currently, most nonlinear models rely on modern control theory. The main idea is to accurately linearize the nonlinear model wit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 丁云飞朱晨烜王栋璀潘羿龙刘洋
Owner SHANGHAI DIANJI UNIV
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