Abstract
Metal halide lamp (MH) is widely used in stadium lighting because of its significant advantages. But this high-intensity gas discharge lamp circuit contains the arcand such negative resistance characteristics lead to harmonic current. In addition, electronic ballasts of MH with rectifier circuit and inverter also produced a large number of electrical harmonics, becoming the main harmonic sources. In this paper, piecewise linearization method is used to establish the electrical model of 2500W metal halide lamp and a three-level model of electronic ballasts with the PSCAD/EMTDC. This paper analyzed the grid side harmonic current when the model is running. Comparing the simulation results to the measured data of Shenzhen Universiade venues lighting circuit, we can verify the accuracy of the model.
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