Islanding Detection of Distributed Generation Based on Parallel Inductive Impedance Switching

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Islanding Detection of Distributed Generation Based on Parallel Inductive Impedance Switching. / Rostami, Ali; Jalilian, Amin; Zabihi, Sasan; Olamaei, Javad; Pouresmaeil, Edris.

In: IEEE Systems Journal, 19.07.2019.

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@article{21a12896f63a42148bad1eecea0579b6,
title = "Islanding Detection of Distributed Generation Based on Parallel Inductive Impedance Switching",
abstract = "This paper deals with a new islanding detection method based on parallel inductive impedance (PII) switching at distributed generation (DG) connection point, and monitoring the rate of change of voltage (dv/dt) at DG output. In the proposed approach, switching the PII causes variation in the dv/dt. This variation is very small in the case that DG operates in parallel with the main grid, whereas the changes will be very large during the occurrence of islanding. Therefore, the dv/dt is employed to identify both the islanding and nonislanding situations; however, to better analyze the dv/dt changes, a fast Fourier transform (FFT) is employed to process the variation of the dv/dt. To select the type of inserted impedance, the effect of switching various impedance types on the FFT (dv/dt) is thoroughly analyzed. It is demonstrated that the purely inductive impedance has better performance than other impedance types. The performance of the proposed method is examined through comprehensive simulation studies in MATLAB. The simulation results indicate that the proposed method retains its efficiency for both inverters- and synchronous-based DGs. Moreover, the proposed method not only has a substantial influence on the reduction of disturbances due to the small amount of PII but also eliminates the nondetection zone entirely in comparison with other available methods.",
keywords = "Fast Fourier transform, FFT, Islanding, Parallel inductive impedance, PII, Switching, Rate of change of voltage",
author = "Ali Rostami and Amin Jalilian and Sasan Zabihi and Javad Olamaei and Edris Pouresmaeil",
year = "2019",
month = "7",
day = "19",
doi = "10.1109/JSYST.2019.2923289",
language = "English",
journal = "IEEE Systems Journal",
issn = "1932-8184",

}

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TY - JOUR

T1 - Islanding Detection of Distributed Generation Based on Parallel Inductive Impedance Switching

AU - Rostami, Ali

AU - Jalilian, Amin

AU - Zabihi, Sasan

AU - Olamaei, Javad

AU - Pouresmaeil, Edris

PY - 2019/7/19

Y1 - 2019/7/19

N2 - This paper deals with a new islanding detection method based on parallel inductive impedance (PII) switching at distributed generation (DG) connection point, and monitoring the rate of change of voltage (dv/dt) at DG output. In the proposed approach, switching the PII causes variation in the dv/dt. This variation is very small in the case that DG operates in parallel with the main grid, whereas the changes will be very large during the occurrence of islanding. Therefore, the dv/dt is employed to identify both the islanding and nonislanding situations; however, to better analyze the dv/dt changes, a fast Fourier transform (FFT) is employed to process the variation of the dv/dt. To select the type of inserted impedance, the effect of switching various impedance types on the FFT (dv/dt) is thoroughly analyzed. It is demonstrated that the purely inductive impedance has better performance than other impedance types. The performance of the proposed method is examined through comprehensive simulation studies in MATLAB. The simulation results indicate that the proposed method retains its efficiency for both inverters- and synchronous-based DGs. Moreover, the proposed method not only has a substantial influence on the reduction of disturbances due to the small amount of PII but also eliminates the nondetection zone entirely in comparison with other available methods.

AB - This paper deals with a new islanding detection method based on parallel inductive impedance (PII) switching at distributed generation (DG) connection point, and monitoring the rate of change of voltage (dv/dt) at DG output. In the proposed approach, switching the PII causes variation in the dv/dt. This variation is very small in the case that DG operates in parallel with the main grid, whereas the changes will be very large during the occurrence of islanding. Therefore, the dv/dt is employed to identify both the islanding and nonislanding situations; however, to better analyze the dv/dt changes, a fast Fourier transform (FFT) is employed to process the variation of the dv/dt. To select the type of inserted impedance, the effect of switching various impedance types on the FFT (dv/dt) is thoroughly analyzed. It is demonstrated that the purely inductive impedance has better performance than other impedance types. The performance of the proposed method is examined through comprehensive simulation studies in MATLAB. The simulation results indicate that the proposed method retains its efficiency for both inverters- and synchronous-based DGs. Moreover, the proposed method not only has a substantial influence on the reduction of disturbances due to the small amount of PII but also eliminates the nondetection zone entirely in comparison with other available methods.

KW - Fast Fourier transform

KW - FFT

KW - Islanding

KW - Parallel inductive impedance

KW - PII

KW - Switching

KW - Rate of change of voltage

U2 - 10.1109/JSYST.2019.2923289

DO - 10.1109/JSYST.2019.2923289

M3 - Article

JO - IEEE Systems Journal

JF - IEEE Systems Journal

SN - 1932-8184

ER -

ID: 35441459