Harmonic current simulation and test based on synthetic circuit

The synthetic circuit test method has become an important method for the test of breaking performance of circuit breakers. As an effective breaking performance test platform, the synthetic test circuit can truly simulate the operating environment of circuit breakers, but also taking into account economic advantages. In order to accurately simulate the operating environment of circuit breaker under the conditions of the novel power system, the synthetic circuit parameter design of harmonic conditions was performed. Based on the Matlab/Simulink platform, the simulation model of the synthetic circuit has been built to verify the accuracy of parameters. And test verification in the synthetic circuit is performed to verify the feasibility. Finally, the Fourier transformation is used for analysis, and the results indicate that the designed cast parameters can accurately synthesize the harmonious wave shape, the results could meet expectations.