The effect of inrush transients on PV inverter's grid impedance measurement based on inter-harmonic injection

V. Cuk, S. Bhattacharyya, J.F.G. Cobben, W.L. Kling, R.B. Timens, Frank Bernardus Johannes Leferink

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    Abstract

    This paper addresses a cause for false tripping of photovoltaic inverters with antiislanding protection based on impedance measurement with inter-harmonic injection. Earlier discussions about tripping problems happening when several devices are doing the measurement at the same time are supplemented with a problem caused by inrush transients of nearby devices. A series of experiments was conducted in the Power Quality laboratory of the TU/e, on a PV inverter which complies with the DIN VDE 0126 standard. Impedance measurement was done in parallel with the inverter and measurement results are presented. A criterion for false tripping caused by transients is explored. Also, influences of network impedance and grid harmonic pollution on false tripping were analyzed. In the end, some signal processing techniques are proposed to avoid this problem.
    Original languageUndefined
    Title of host publicationProceedings of the International Conference on Renewable Energies and Power Quality (ICREPQ 2010)
    Place of PublicationGranada, Spain
    PublisherEA4EPQ
    Pages1-6
    Number of pages6
    ISBN (Print)not assigned
    Publication statusPublished - 23 Mar 2010
    EventInternational Conference on Renewable Energies and Power Quality, ICREPQ 2010 - Granada, Spain
    Duration: 23 Mar 201025 Mar 2010

    Publication series

    Name
    PublisherEuropean Association for the Development of Renewable Energies, Environment and Power Quality (EA4EPQ)

    Conference

    ConferenceInternational Conference on Renewable Energies and Power Quality, ICREPQ 2010
    Period23/03/1025/03/10
    Other23-25 March 2010

    Keywords

    • METIS-270984
    • EWI-18305
    • IR-72618

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