A method for obtaining an equivalent model and parameters of a power element based on field-circuit combination

Abstract

The invention discloses a method for obtaining an equivalent model and parameters of a power element based on a field-circuit combination, which is characterized in that the method comprises the following steps: Step 1, obtaining structural and dimensional parameters of the power element; Step 2, in the ANSYS three-dimensional simulation software,establishing the three-dimensional structure of thepower element model; Step 3, applying a low-voltage traveling wave test to the three-dimensional structure model of Step 2 to obtain a unit step response of the power element; Step 4, providing the qualitative equivalent circuit model of the power element according to the connection structure of the power element and other elements; Step 5, according to the principle that the qualitative circuitmodel obtained in step Step 4 coincides with the unit step response of the power element, determining the parameters of the qualitative circuit model of the power element. The invention effectively solves the problem that the simulation results caused by the previous power element model and the empirical parameters are quite different from the actual ones in the prior art.

Description

technical field [0001] The invention relates to the field of power system modeling and simulation, and more specifically relates to a method for obtaining equivalent models and parameters of power components based on field-circuit combination. Background technique [0002] Due to the particularity of the power system network, such as high voltage levels, long lines, and complex related parameters, the research methods are often complicated and the amount of calculation is large when performing numerical calculations. At the same time, there is a lack of corresponding test environments for specific experiments. Under such a premise, it is easier to use computer-related software to model and simulate specific problems, and it has the advantages of convenient operation and practical conditions. [0003] However, with the development of power systems, more and more researchers now find that the results of modeling simulations and actual experiments differ far beyond the allowabl...

AI Technical Summary

Problems solved by technology

It can be seen that the modeling and simulation of the power system is still using the previous models and empirical parameters, but with the development of the power system, these models and parameters may have some changes, which directly leads to the simulation results based on experience. The actual difference is quite large

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