Hydroelectric generating set speed regulating system control parameter setting method based on characteristic parameters

A technology for hydroelectric generating units and speed regulation system, which is applied in electric speed/acceleration control, control/regulation system, adaptive control and other directions, and can solve problems such as unsatisfactory use effect of setting formula.

Inactive Publication Date: 2015-07-29
ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD +1
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Problems solved by technology

[0004] Although many scholars have made a lot of pioneering work in the field of turbine governor control parameter optimization by using the Routh-Hurwitz stability criterion, state space eigenvalues, root locus and pole cancellation methods, and proposed various Classical tuning formulas, but due to the oversimplified hydroelectric unit model used in the research, the effect of these tuning formulas in actual engineering is not ideal, and they mainly play a guiding role

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  • Hydroelectric generating set speed regulating system control parameter setting method based on characteristic parameters
  • Hydroelectric generating set speed regulating system control parameter setting method based on characteristic parameters
  • Hydroelectric generating set speed regulating system control parameter setting method based on characteristic parameters

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[0024] 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 embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0025] The present invention provides a method for setting the control parameters of the speed regulation system of the hydroelectric unit based on characteristic parameters. The basic idea is: on the basis of the dimensionless characteristic equation of the hydroelectric unit, the Routh-Hurwitz stability criterion and the root locus method are applied Find the optimal control parameters of the ...

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Abstract

The invention discloses a hydroelectric generating set speed regulating system control parameter setting method based on characteristic parameters and belongs to the technical field of optimization of water turbine speed regulators. The hydroelectric generating set speed regulating system control parameter setting method comprises the following steps: (1) obtaining a hydroelectric generating set non-dimensional characteristic equation through non-dimensional processing; (2) applying Routh-Hurwitz stable criterion and a root-locus method to solve speed regulating system optimal control parameters; and (3) utilizing a linear regression method and a curve fitting technology to obtain an optimal value of speed regulating system control parameters. The hydroelectric generating set speed regulating system control parameter setting method has the advantages of simple setting process, small calculation amount, easiness for realization and the like; the speed regulating system optimal control parameters are directly set according to five characteristic parameters (including a water flow inertia time constant, a set inertia time constant, a servomotor responding time constant, a perpetual state rotary difference coefficient and a power generator comprehensive self-adjusting coefficient).

Description

technical field [0001] The invention belongs to the technical field of optimization of a speed governor of a water turbine, and more specifically relates to a method for setting control parameters of a speed regulation system of a hydroelectric unit based on characteristic parameters. Background technique [0002] As an important part of the power system, hydroelectric units are ideal for frequency regulation, peak regulation and emergency backup power because they have the advantages of fast startup and shutdown, quick response, and the ability to quickly and flexibly adjust to grid conditions. [0003] The regulation performance of a hydroelectric unit is mainly determined by the control parameters of its speed regulation system. However, for a long time, there is still a lack of effective methods for control parameter tuning, mainly relying on the experience summed up by hydropower station operators on the operating conditions and rules of specific units. Therefore, how ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D13/62G05B13/04
Inventor 唐戢群刘昌玉何雪松沈春华颜秋容高晓光刘肖
Owner ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD
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