Simulation Research of Short-circuited Fault Detection with Micro-grid in Islanded Operation

doi:10.11930/j.issn.1004-9649.2014.3.85.4

Abstract

Abstract: Micro-grid with distributed generation is modeled and simulated with Matlab/Simulink. Simulation experiments are made when operating mode of micro-grid is switched from the islanded mode to the grid-connected mode. The simulation results demonstrate the effectiveness of the built micro-grid simulation model. Short-circuited fault is simulated in micro-grid's islanded operation by adding the three-phase fault module to the above simulation model. Db wavelet is selected to detect the voltage of short-circuited fault. The simulation results show that db wavelet can accurately detect the singularity of the short-circuited fault signal, which provides support for improving the power quality of the micro-grid.

Key words: wavelet analysis, distributed generation(DG), micro-grid, short-circuited fault

CLC Number:

ZHOU Jian-ping, XU Si-cong. Simulation Research of Short-circuited Fault Detection with Micro-grid in Islanded Operation[J]. Electric Power, 2014, 47(3): 85-89.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2014.3.85.4

https://www.electricpower.com.cn/EN/Y2014/V47/I3/85

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