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Influence of increasing numbers of RE-inverters on the power quality in the distribution grids: A PQ case study of a representative wind turbine and photovoltaic system

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Abstract

This paper presents the selected power quality (PQ) indicia of a wind generator and a photovoltaic installation considered to be the representative of medium voltage and low voltage distribution grids. The analysis of measured values suggests that the decrease in PQ is a case of specific combination of distributed generation, grid parameters and load behaviour. Modern generators have a limited impact on PQ. On the other hand, fluctuations in power generation are regarded as an emerging PQ indicator. The growing number of distributed renewable installations causes stochastic, variable, and hardly predictable power flows in the distribution grid. The nature of fluctuations in wind and solar generation is different. In both cases, new indexes for the quantification of fluctuations are needed and are yet not standardised. Proper assessment of these fluctuations enables definition of useful fluctuation limits and rules for optimal storage system integration.

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Authors and Affiliations

  1. Brandenburg University of Technology, 01968, Cottbus-Senftenberg, Germany

    Przemyslaw Janik

  2. Department of Electrical Engineering, Wroclaw University of Science and Technology, 50-370, Wroclaw, Poland

    Grzegorz Kosobudzki

  3. Department for Energy Distribution and High Voltage Engineering, Brandenburg University of Technology, 01968, Cottbus-Senftenberg, Germany

    Harald Schwarz

Authors
  1. Przemyslaw Janik
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  2. Grzegorz Kosobudzki
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  3. Harald Schwarz
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Corresponding authors

Correspondence to Przemyslaw Janik or Grzegorz Kosobudzki.

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Janik, P., Kosobudzki, G. & Schwarz, H. Influence of increasing numbers of RE-inverters on the power quality in the distribution grids: A PQ case study of a representative wind turbine and photovoltaic system. Front. Energy 11, 155–167 (2017). https://doi.org/10.1007/s11708-017-0469-3

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  • DOI: https://doi.org/10.1007/s11708-017-0469-3

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