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Simulation Research and Design for the Three-Phase Voltage Sag Simulator

Author: WangShuZuo
Tutor: YanXiangWu
School: North China Electric Power University
Course: Theory and New
Keywords: Voltage dips Voltage PWM Rectifier Voltage sag generator Matlab / Simulink simulation
CLC: TM714.2
Type: Master's thesis
Year: 2011
Downloads: 44
Quote: 0
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Abstract


As we all know, a lot of power quality problems caused by voltage dips , the three-phase voltage dips fault simulator is used to test device as a way of assessing the supply voltage dips and voltage short interruptions of electrical equipment . This paper systematically studied the realization of the three-phase voltage dips fault simulator designed by Back to the Back Voltage PWM converter topology main circuit structure of the three-phase voltage dips fault simulator ; the dq0 coordinate system voltage sag type , sag magnitude , duration formation methods , as well as the realization of accurate three-phase symmetrical and asymmetrical voltage dips ; using Matlab / Simulink simulation software reproduction of the seven types of typical voltage sag type a, B , C, D, E, F, G sag depth and duration of the simulation. Dips through analysis of the side of the fault simulation side converter (FSC) of the FFT spectrum of the maximum phase voltage , can be seen, low total harmonic content , the sine wave of the voltage waveform close to the standard ; the same time, the grid-side converter (GSC) side basic current and voltage in phase , the power factor of over 0.99 , the AC current total harmonic distortion (THD) is controlled in the range of 5% comprehensive , realistic simulation of the three-phase system may occur in a variety of voltage sag event , to verify the correctness and feasibility of the method and design circuit The simulation results also show that the three-phase voltage dips fault simulator can be used to assess not only the instant power supply voltage dips , short interruptions and voltage industrial passive load , can also be used to assess industrial active load , for example , solar and network devices .

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CLC: > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Theory and Analysis > Load analysis > Voltage regulation
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