Parameter checking method, device and system based on model reference

Abstract

The invention discloses a parameter checking method, device and system based on model reference, wherein the method comprises the steps: obtaining a simulation output excitation voltage basic value and an actual output excitation voltage basic value, wherein the simulation output excitation voltage base value and the actual output excitation voltage base value are obtained by simultaneously sending input unit data to the excitation simulation model and the actual excitation system, and the simulation output excitation voltage base value and the actual output excitation voltage base value are sent to an error comparator, and an error signal is obtained; sending the error signal to a least square method evaluator for evaluation, continuously modifying the model parameters of the excitation simulation model based on the evaluation result, iterating until the evaluation requirement is met, and outputting the model parameters; reading actual system parameters in the actual excitation system, comparing the output model parameters, and checking the system parameters of the actual excitation system. Herein, the parameters of an actual excitation system are verified based on the excitation simulation model, whether the performance of the actual system is weakened or not is found in time, and therefore predictive optimization maintenance is achieved.

Description

technical field [0001] The invention belongs to the technical field of parameter checking, and in particular relates to a parameter checking method, device and system based on model reference. Background technique [0002] In my country's power system, the widespread use of digital regulators has greatly improved the coordinated operation of the machine network, but it is also pointed out that the performance of some generator excitation systems is not up to standard, or some power plants have changed the functions and parameters of the regulators. In some cases, the unit regulation system of some power plants does not consider the overall response characteristics of the power grid, and the performance indicators of various functions are not perfect, which leads to the reduction of power grid simulation accuracy and increases the risk of power grid accidents. [0003] The excitation system is the core device of generator set control. Once the parameters of the excitation syst...

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Problems solved by technology

[0002] In my country's power system, the widespread use of digital regulators has greatly improved the coordinated operation of the machine network, but it is also pointed out that the performance of some generator excitation systems is not up to standard, or some power plants have changed the functions and parameters of the regulators. In some cases, the unit regulation system of some power plants does not consider the overall response characteristics of the power grid, and the performance indicators of various functions are not perfect, resulting in reduced power grid simulation accuracy and increased risk of power grid accidents

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