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V. Becirovic, B. Nikolic, S. Hanjalic, M. Brkić
7 6. 6. 2013.

Modeling a group of consumers in order to analyze power quality

Application of new technology, the power electronics in the first place, has significantly improved the performance of individual consumers and increased their efficiency. The consequence of this is a presence of non-linear consumers in a network which are responsible for injection of higher harmonics and flickers into the network. A classification of consumers in the 0.4 kV network is presented in this paper. This classification is based on the measurements of the current waveform and the power of consumers. The measurements were realized using a measuring device for monitoring power quality. The measurements were made for a household that has appliances of new generation. It has been analyzed total and individual current of household appliances. In the first part of this work is presented relation between the new generation of household appliances and power quality (PQ). The second part of this paper is considering the problems of modeling a group of consumers with the purpose of analyzing the power quality. The measurements of a group of consumers, that were performed in laboratory conditions, provided us enough data for proposing a mathematical model.


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