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PID hydraulic turbine governor parameter optimization method based on multi-working-condition time domain response

A technology of time-domain response and optimization method, which is applied in the direction of machines/engines, mechanical equipment, hydroelectric power generation, etc., and can solve problems such as limited regulation capacity, poor performance of hydroelectric units, and poor robustness of hydraulic turbine regulation system to changes in working conditions. To achieve the effect of improving the robustness

Inactive Publication Date: 2014-02-19
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

Unreasonable parameter selection will lead to poor performance of the hydroelectric unit, limit its regulation ability, and cause serious safety problems
[0004] Many advanced theories and methods have been widely used in the optimization of PID turbine governor parameters, but most of the methods are based on the system in a specific working condition to optimize the control parameters, so the optimal parameters can not guarantee the system in Satisfactory regulation quality is also available under other working conditions, resulting in poor robustness of the turbine regulation system to changes in working conditions

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  • PID hydraulic turbine governor parameter optimization method based on multi-working-condition time domain response
  • PID hydraulic turbine governor parameter optimization method based on multi-working-condition time domain response
  • PID hydraulic turbine governor parameter optimization method based on multi-working-condition time domain response

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[0029] 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.

[0030] The PID water turbine governor parameter optimization method based on multi-working condition time domain response proposed by the present invention, its basic idea is: based on the nonlinear water turbine regulation system model, according to the time domain response index definition of the system under multiple working conditions The fitness function is integrated, and the intelligent optimization algorithm is used to optimize the control parameters of the PID turbine governor. Specifically include the following steps:

[0031] (1) Estab...

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Abstract

The invention discloses a PID hydraulic turbine governor parameter optimization method based on multi-working-condition time domain response. The method includes the following steps that (1) a hydraulic turbine regulating system model is built, wherein the hydraulic turbine regulating system model particularly comprises a PID hydraulic turbine governor model, a hydraulic turbine-water diversion pipeline model and a generator model; (2) parameters of the hydraulic turbine regulating system model are obtained in a field test and parameter recognition mode; (3) a comprehensive fitness function based on multi-working-condition time domain response is designed, and the optimization objectives of finding out an optimum PID control parameter and enabling a comprehensive fitness function value to be minimum are determined; (4) the optimal PIC control parameter is obtained through an intelligent optimization algorithm. The control parameters obtained through the method enable a system to keep satisfying dynamic characteristics under different working conditions, and robustness of the system is enhanced.

Description

technical field [0001] The invention relates to hydraulic turbine regulation technology, in particular to a PID hydraulic turbine governor parameter optimization method based on multi-working condition time domain response. Background technique [0002] The basic task of turbine regulation is to continuously adjust the active power output of the generator set according to the change of the grid load, and maintain the unit speed within the specified range. The adjustment objects include: pressure water diversion system and drainage system, turbine, generator and unit into the operating grid. Since the object is a controlled system with a complex structure and time-varying parameters that integrates the hydraulic process, mechanical process and electrical process, and is closely related to each other, the proportional-integral-derivative (PID) governor and its composition are usually used in the control of hydropower stations. The closed-loop water turbine regulation system e...

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Application Information

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IPC IPC(8): F03B15/00
CPCY02E10/226Y02E10/20
Inventor 刘昌玉何雪松颜秋容王湛张恩博
Owner HUAZHONG UNIV OF SCI & TECH
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