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Sub-harmonics Based String Fault Assessment in Solar PV Arrays

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Modelling and Simulation in Science, Technology and Engineering Mathematics (MS-17 2017)

Part of the book series: Advances in Intelligent Systems and Computing ((AISC,volume 749))

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Abstract

Solar photo voltaic arrays are normally kept at roof top where monitoring of the arrays is challenging task. In this work, an attempt has been taken to monitor the connectivity of the strings feeding energy to the inverter input of a microgrid. The connectivity of the strings has been monitored using inverter output currents waveform. This has been achieved by capturing starting transient of inverter output current. Sub-harmonic components have been measured where from specific relation have been extracted for amplitudes of selected frequencies with percentage of string fault. After selection of certain sub-harmonic components, linear approximation has been done in the relation between amplitude versus percentage of string fault. An algorithm has been proposed for determination of unknown number of faulty strings and has been validated.

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Correspondence to Tapash Kr. Das .

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Das, T.K., Banik, A., Chattopadhyay, S., Das, A. (2019). Sub-harmonics Based String Fault Assessment in Solar PV Arrays. In: Chattopadhyay, S., Roy, T., Sengupta, S., Berger-Vachon, C. (eds) Modelling and Simulation in Science, Technology and Engineering Mathematics. MS-17 2017. Advances in Intelligent Systems and Computing, vol 749. Springer, Cham. https://doi.org/10.1007/978-3-319-74808-5_25

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  • DOI: https://doi.org/10.1007/978-3-319-74808-5_25

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-74807-8

  • Online ISBN: 978-3-319-74808-5

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