Hydroelectric generating set speed regulation system PID parameter setting method and device

A hydroelectric unit and parameter tuning technology, which is used in the control of electromechanical transmissions, control systems, and generators to optimize dynamic characteristics and avoid ultra-low frequency oscillations.

Active Publication Date: 2019-01-01
CHINA SOUTHERN POWER GRID COMPANY +1
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Problems solved by technology

[0005] The embodiment of the present invention provides a PID parameter setting method and device for the hydroelectric unit speed control system, which can effectively solve the problem of how to reasonably configure the hydroelectric unit speed control system parameters in the medium-scale power grid in the prior art, and can effectively optimize the dynamic frequency of the power grid characteristics, to avoid the problem of ultra-low frequency oscillation

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  • Hydroelectric generating set speed regulation system PID parameter setting method and device
  • Hydroelectric generating set speed regulation system PID parameter setting method and device
  • Hydroelectric generating set speed regulation system PID parameter setting method and device

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Embodiment Construction

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0051] see figure 1 , is a schematic flow chart of a PID parameter setting method for a speed control system of a hydroelectric unit provided by an embodiment of the present invention, including steps:

[0052] S11. Using a preset simulation model to perform time-domain simulation on the hydroelectric unit, and determine the amplification factor of the proportional link and the corresponding oscillation period when the hydroelectric unit reaches a critical stable s...

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Abstract

The present invention discloses a hydroelectric generating set speed regulation system PID parameter setting method and device. The method comprises the steps of: employing a preset simulation model to perform simulation of a hydroelectric generating set to determine proportional component magnification times when the hydroelectric generating set reaches a critical stable state and a correspondingvibration period; according to the proportional component magnification times when the hydroelectric generating set reaches the critical stable state and the corresponding vibration period, calculating the proportional component magnification times in the PID parameters and differentiation component magnification times; according to the proportional component magnification times in the PID parameters and the differentiation component magnification times, employing the preset simulation model to perform simulation, and determining integration component magnification times when the hydroelectric generating set reaches the critical stable state as the integration component magnification times in the PID parameter; and according to the proportional component magnification times, the differentiation component magnification times and the integration component magnification times in the PID parameters, employing the preset simulation model to perform simulation and verification so as to complete setting of the PID parameters.

Description

technical field [0001] The invention relates to the technical field of machine-network coordination in electric power systems, in particular to a PID parameter setting method and device for a speed regulation system of a hydroelectric unit. Background technique [0002] The parameter configuration of the speed control system of the hydroelectric unit has an important influence on the dynamic characteristics of the frequency of the power system. Power systems of different scales need to be configured with different parameters of the speed control system of the hydroelectric unit. After the large-scale power grid implements asynchronous networking, the power grid in a certain area that originally belonged to the large-scale power grid will be separated from the large-scale power grid and run asynchronously. After asynchronous operation, if the scale of installed capacity and load of the regional power grid is greatly reduced compared with the large-scale power grid, the origin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/00
CPCH02P21/0003
Inventor 周剑刘蔚徐光虎周毓敏吴云亮甄鸿越周挺辉陈刚江出阳蔡东阳
Owner CHINA SOUTHERN POWER GRID COMPANY
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