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Voltage dips detection in a microgrid with distributed generation for grid-tie inverter protection purposes
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| Author(s) |
Aleksandar STANISAVLJEVIC |
| Abstract |
The paper addresses the problem of fault detection in an unbalanced microgrid with distributedgenerators, using algorithms based on harmonic estimation: Wavelet Transform (WT), Fast FourierTransform (FFT) and Reduced Fast Fourier Transform (RFFT). Simulations were carried out in theMATLAB/SimPowerSystems environment. Modified IEEE13 bus system with distributed generationwas used. Experimental verification was done in the Laboratory for Power Electronics of the Facultyof Technical Sciences on advanced setup with grid emulator and modern hardware using modifiedindustrial converters and advanced control circuit. The algorithms were evaluated as part of the gridtieinverter protection scheme for 6 types of faults. It was shown that wavelet with Daubechies with 4filter coefficients has not performed as expected, as it was not able to successfully detect voltagedips. On the other hand, algorithms based on Fourier transformation (FFT and RFFT) successfullydetected voltage dips. |
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| Filename: | 0419-epe2017-full-11562483.pdf |
| Filesize: | 1.351 MB |
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| Type |
Members Only |
| Date |
Last modified 2018-04-17 by System |
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