NDLI: Ensemble empirical mode decomposition-based differential protection scheme for islanded and grid-tied AC microgrid

Content Provider	IET Digital Library
Author	Anand, Abhisekh Affijulla, Shaik
Abstract	This study presents a differential protection scheme based on ensemble empirical mode decomposition (EEMD) for AC microgrid. The fault current level is significantly lower during the islanded operation of a microgrid, which leads to the malfunction of the traditional over-current protection scheme. The proposed differential protection scheme uses the spectral differential energy of the first intrinsic mode function extracted from the decomposition of the current signal using EEMD for effective fault detection in the AC microgrid. The proposed EEMD-based differential protection scheme is validated on 10 bus and modified IEEE 34-bus AC microgrid test systems during various shunt faults. Moreover, the performance of the proposed EEMD-based differential protection scheme is evaluated under high fault impedance scenarios. The simulation results reveal that the proposed differential protection scheme can effectively detect the faulty line in an AC microgrid during seamless islanded and grid-tied operations.
Starting Page	6674
Ending Page	6681
Page Count	8
ISSN	17518687
Volume Number	14
e-ISSN	17518695
Issue Number	Issue 26, Dec (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2020.1117
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/14/26
Journal	IET Generation, Transmission & Distribution
Publisher Date	2021-01-06
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	10-bus AC Microgrid Test Systems Current Signal Decomposition Differential Protection Scheme Distributed Power Generation Distribution Network EEMD Electric Impedance Ensemble Empirical Mode Decomposition Fault Current Fault Current Level Fault Detection Fault Diagnosis Fault Impedance Scenario First Intrinsic Mode Function Grid-tied AC Microgrid Hilbert Transform Integral Transforms Islanded Operation Line Fault Modified IEEE 34-bus AC Microgrid Test System Over-current Protection Scheme Overcurrent Protection Power Distribution Fault Power Distribution Line Power Distribution Protection Power Generation Protection Power Grid Power System Protection Shunt Fault Signal Processing Signal Processing And Detection Spectral Differential Energy
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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