Molding system and method of pump storage group speed regulating system

A technology for pumped storage units and speed control systems, applied in control/regulation systems, general control systems, instruments, etc., can solve the problems of lack of on-site data analysis, model parameter differences, lack of model types of speed control systems, etc.

Active Publication Date: 2014-12-10
STATE GRID CORP OF CHINA +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] (1) The main focus is on the construction of the model, and the analysis of field data is still lacking;
[0007] (2) There may be differences in model parameters identified by static tests and dynam

Method used

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  • Molding system and method of pump storage group speed regulating system
  • Molding system and method of pump storage group speed regulating system
  • Molding system and method of pump storage group speed regulating system

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Embodiment Construction

[0036] The present invention provides a pumped storage unit speed regulation system modeling system, such as figure 1 shown, including:

[0037] The control logic parameter identification module of the speed control system is used for the proportional coefficient of the PID link of the control logic of the speed control system K P , integral coefficient K I Identify and output to the parameter overall optimization module to wait for optimization; among them, the speed control system includes control logic, actuator, prime mover and other parts;

[0038] The main pressure distribution valve model identification module is used to identify the parameters of the main pressure distribution valve and output them to the parameter overall optimization module for optimization. The main pressure distribution valve parameters include the integral time constant of the main pressure distribution valve T y1 and the main pressure distribution valve feedback time constant T R1 ;

[00...

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Abstract

The invention relates to a molding system and method of a pump storage group speed regulating system. The molding method comprises the following steps of: identifying a PID link proportionality coefficient and integral coefficient based on pure proportion and pure integral measured data; identifying an integral time constant and a feedback time constant of a main distributing valve based on measured data of the main distributing valve; identifying an integral time constant, a feedback time constant and an amplification coefficient of a main servomotor based on measured data of the main servomotor ; identifying a linear relationship coefficient between a power and an aperture based on power-aperture measured data; identifying a prime mover parameter based on measured data of an open-loop disturbance power; identifying a generator set parameter based on measured data of closed-loop power disturbance; optimizing the obtained parameters and returning the parameters to each sub-link parameter identification module, calculating model response, and carrying on iterative optimization of the parameters if a difference between the model response and the measured response is beyond the limitation; otherwise, outputting a result.

Description

technical field [0001] The invention relates to the technical field of electric power system simulation modeling, in particular to a modeling system and method for a speed regulation system of a pumped storage unit. Background technique [0002] The frequency stability of the power grid is one of the important indicators to measure the security and stability of the power grid. With the gradual expansion of the interconnection scale of the power grid, the scope of frequency stability problems is expanding. The variable speed system model is the basis of power system frequency stability and small disturbance stability analysis. In recent years, with the deepening of the simulation analysis work, the modeling of the four major parameters of the power grid has received great attention from the majority of electric power science and technology workers. The parameters of the governor model, which have a significant impact on frequency stability, have also become the focus of atte...

Claims

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Application Information

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IPC IPC(8): G05B13/04
CPCG05B13/04
Inventor 徐振华吴丹岳黄道姗
Owner STATE GRID CORP OF CHINA
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