Molding system and method of pump storage group speed regulating system

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...

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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 dynamic tests, and there is no effective solution to this difference;

[0008] (3) There are relatively few types of speed control system models, and it is difficult to accurately describe various models on site

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