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The importance and necessity of economic loss evaluation of power quality is discussed in the paper. In order to scientifically evaluate the economic loss of power quality indexes, the idea of meaningful classification of power quality problems is emphasized and the quality loss function is introduced into the evaluation models. According to the characteristics of continuous power quality problems,...
In a liberalized electricity market, it is not surprising that different customers need different power quality levels with different price. So how to achieve the synthetic grading evaluation of power quality becomes a concerned problem. In this paper, the idea of classified evaluation of power quality is emphasized, and the major differences between the continuous and event-based power quality problems...
As a promising renewable resource, wind power is highly expected to contribute a significant part of generation in power systems in the future, but this also brings new integration related power quality issues due to its unconventional characteristics. To solve frequency fluctuating problems of wind power integration, this paper proposes an idea that it is possible and reasonable to use HVDC lines...
Since Microgrid located downstream in distribution network, voltage sags caused by short circuit have become common power quality events that users of Microgrid have to face. According to where the short circuits occurred, voltage sags can be divided into two categories, interior voltage sag and exterior voltage sag. Exterior voltage sag caused by short circuit taking place in distribution network,...
The issue of power quality in the distribution system is always in sense of the concern. With the high penetration of distributed generation (DG) currently, it tends to be more complicated. This paper presents a new approach to evaluate impacts of the DG on power quality of the distribution network. In the process an objective function will be modeled, which will be solved by the optimization toolbox,...
As one of the fundamental structures in Smartgrid concept, Microgrid has critical effort on maintaining user's power quality and efficiency therefore reduce energy consumption and carbon emission. Harmonic environment of an electric network means the characteristic of distribution of the harmonic energy, voltage and current, in the network. Harmonic environment of Microgrid is complicated due to nonlinear...
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