Method for establishing simulation model of excitation system

Abstract

The invention relates to the field of modeling and simulation of excitation systems, and especially relates to a method for establishing a simulation model of an excitation system, that is, using a BPA simulation tool to build the simulation model which is basically consistent with the functions of a field actual measurement model. After model transformation, numerical values of KB and KH are within the limits of the values, and after parameter transformation, a BPA simulation tool is used to carry out simulation checking, and test the functions of the built simulation model. Through checking, errors of various key data indexes are within a prescribed range of excitation modeling guidelines, so that the built simulation model of the excitation system can be used for daily power grid stability analysis. The method for establishing the simulation model of the excitation system provided by the invention reduces the value of KB and increases the value of KH under the condition of guaranteeing the simulation effect; and the method for establishing the model is adopted innovatively, BPA data file input format constraints are solved, and simulation modeling work is well completed.

Description

technical field [0001] The invention relates to the field of modeling and simulation of an excitation system, in particular to a method for establishing a simulation model of an excitation system. Background technique [0002] A large number of theoretical analysis and practical experience have proved that among the measures taken to improve the stability of the power system, the excitation control of the generator has an obvious effect and is an economical and effective means. In order to complete the excitation test more efficiently and accurately, the simulation modeling of the three-machine brushless excitation system MEC7000 has been completed for the first time in China. The on-site measurement model of the Mitsubishi MEC7000 excitation system is as follows: figure 1 As shown, in the BPA simulation, according to the comparative verification, the FM type brushless excitation system model is used as the equivalent model for simulation calculation. The model diagram is sh...

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Problems solved by technology

Since this is the first simulation modeling of Mitsubishi MEC7000, it is necessary to continuously try to correct the parameters to make the simulated step response curve consistent with the field measured curve. Every time it is corrected, it is necessary to re-check the calculation. If the above method is adopted, It will consume a lot of time on reading and calculation; in addition, the method of manual reading may also affect the calculation accuracy, reducing the efficiency and accuracy of simulation verification calculation

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