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Distributed generation (DG) injects new vigor into the power system, but it sometimes brings unfavorable factors influencing the power quality of distribution network. In this paper, the Dynamic Voltage Restorer (DVR) is introduced to the distribution network to improve the power quality. In view of that the detection of voltage compensation is the key factor that influences the effect of voltage...
Desired islanding detection method not only can detect islanding within acceptable duration, but also require it has less adverse impact on power quality. This paper presents an active islanding detection method for a distributed resource (DG) unit which is coupled to a utility grid through grid-connected converter. With the proposed method which is based on adding periodical disturbing current through...
With the continuously reducing cost of grid-connected photovoltaic (PV) power generation and the further intensification of energy crisis, grid-connected PV power technology obtains more and more application. The topology for single-phase grid-connected PV system and the control technology based on TMS320LF2407 digital signal processor (DSP) are summarized in this paper. The functions, such as operation,...
A micro-grid can increase the reliability of energy supplies by disconnecting from the grid in the case of network faults or reduced power quality. The techniques that have been investigated to control micro-grids in both modes are summarized as well as those proposed to maintain stability during the transitions from one mode to the other. This paper first introduces the micro-grid planning structure...
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