Water turbine PID (Proportion Integration Differentiation) speed regulator control parameter setting method based on uncertainty model
A technology of uncertainty and control parameters, which is applied in the field of control parameter setting of turbine PID governor based on uncertainty model, and can solve problems such as poor system robustness and lack of system parameter changes
Inactive Publication Date: 2015-03-04
HUAZHONG UNIV OF SCI & TECH +1
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In fact, the hydraulic turbine regulation system has the characteristics of large-scale perturbation of parameters in the process of changing working conditions, and the deterministic model cannot describe this characteristic, which leads to the lack of ability to deal with system parameter changes in the turbine PID governor tuned by this method , the system is less robust
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[0041] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and exemplary embodiments. It should be understood that the exemplary embodiments described here are only used to explain the present invention, and are not intended to limit the applicable scope of the present invention.
[0042] The present invention proposes a water turbine PID governor control parameter tuning method based on an uncertainty model. The basic idea is: based on the uncertainty model of the water turbine regulation system, the necessary and sufficient conditions for the robustness and stability of the system are deduced, and the system dynamics are defined. The performance index of quality, so the problem of controlling parameter tuning of PID governor of water turbine can be summarized as a constrained optimization problem for solution. Specifically...
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The invention discloses a water turbine PID (Proportion Integration Differentiation) speed regulator control parameter setting method based on an uncertainty model. The water turbine PID speed regulator control parameter setting method is characterized in that a water turbine PID speed regulator control parameter setting problem is classified into a constrained optimization problem to be solved based on the uncertainty model of a water turbine regulation system. The method comprises the following steps: (1) establishing the uncertainty model of the water turbine regulation system, wherein the uncertainty model particularly comprises a water turbine PID speed regulator model and a water turbine generator set uncertainty model; (2) determining necessary and sufficient conditions of robust stability of the water turbine regulation system and defining performance indexes of dynamic quality of the water turbine regulation system; (3) concluding the constrained optimization problem of the water turbine PID speed regulator control parameter setting; and (4) solving the optimal control parameter by using a non-linear constrained optimization algorithm. The control parameters set by the method can ensure that the system is stabilized in a parameter perturbation range and the robustness on the parameter perturbation by the system is remarkably enhanced.
Description
technical field [0001] The invention relates to a water turbine regulating technology, in particular to a method for setting control parameters of a water turbine PID governor based on an uncertainty model. Background technique [0002] The hydraulic turbine regulation system is a highly complex system that integrates hydraulic, mechanical and electrical processes, consisting of a governor, a hydraulic turbine-pressure pipe, and a generator-load. Among them, the turbine governor is an important control device to ensure the stable operation of the system, and its regulation performance is directly related to the power supply quality of the power grid. [0003] At present, the turbine governors used in domestic hydropower stations generally adopt PID governors with proportional-integral-derivative (PID) control rules. This kind of governors has the advantages of simple algorithm and high reliability, but the difficulty lies in how to Adjust the control parameters. Only when ...
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Login to View More IPC IPC(8): F03B15/08G06F19/00
CPCF03B15/08Y02E10/20
Inventor 刘昌玉董鸿魁何雪松颜秋容何常胜杨剑锋刘肖
Owner HUAZHONG UNIV OF SCI & TECH