Results 1 to 10 of about 224,349 (150)
Improved Three-Phase AFD Islanding Detection Based on Digital Control and Non-Detection Zone Elimination [PDF]
Energies, 2018 This paper proposes an improved active frequency drift (AFD) islanding detection method of a three-phase inverter. Different than the existing single-phase AFD method, in the three-phase system, the disturbance is added to the phase angle, which takes ...
Xinxin Zheng +3 more
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IEEE Access, 2022 In this paper, a new and efficient passive islanding detection technique for a grid-connected hybrid distributed generating system has been proposed using Second Generation Wavelet Transform (SGWT) and Maximum Overlap Discrete Wavelet Transform (MODWT ...
B. Pangedaiah +4 more
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Modified Q–f Droop Curve Method for Islanding Detection With Zero Non-Detection Zone [PDF]
IEEE Access, 2021 In this paper, a modified Q-f droop curve method for the inverter-based distributed generator is proposed. The proposed method has merits such as detecting islanding with zero non-detection zone, negligible effects on power quality, and simple ...
Kianoush Naraghipour +3 more
doaj +6 more sources
A Survey of Islanding Detection Methods for Microgrids and Assessment of Non-Detection Zones in Comparison with Grid Codes [PDF]
Energies, 2022 Detection of unintentional islanding is critical in microgrids in order to guarantee personal safety and avoid equipment damage. Most islanding detection techniques are based on monitoring and detecting abnormalities in magnitudes such as frequency ...
José Antonio Cebollero +4 more
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A Novel Islanding Detection Scheme without Non Detection Zone
The Transactions of the Korean Institute of Power Electronics, 2015 Unintentional islanding results in safety hazards, reliability, and many other issues. Therefore, the islanding detection of a power conditioning system of a distributed generation, such as a grid-connected photovoltaic inverter, is a key function for standard compliance.
Seung-Ho Song, Ick Choy, Ju-Yeop Choi
exaly +3 more sources
A simple technique for islanding detection with negligible non-detection zone [PDF]
2009 IEEE Power & Energy Society General Meeting, 2009 Although active islanding detection techniques have smaller nondetection zones than passive techniques, active methods could degrade the system power quality and are not as simple and easy to implement as passive methods. The islanding detection strategy, proposed in this paper, combines the advantages of both active and passive islanding detection ...
Hatem H․ Zeineldin
exaly +3 more sources
The Study of Non-Detection Zones in Conventional Long-Distance Ultrasonic Guided Wave Inspection on Square Steel Bars [PDF]
Applied Sciences, 2018 In a low-frequency ultrasonic guided wave dual-probe flaw inspection of a square steel bar with a finite length boundary, the flaw reflected pulse wave cannot be identified using conventional time monitoring when the flaw is located near the reflection ...
Lei Zhang +3 more
doaj +2 more sources
IEEE Transactions on Smart Grid, 2021 This article proposes a fast and reliable two-level islanding detection method (IDM) for grid-connected photovoltaic system (GCPVS)-based microgrid. In the first level of the proposed IDM, the magnitude of the rate of change of output voltage (ROCOV) is computed.
Reza Bakhshi-Jafarabadi +2 more
exaly +5 more sources
Sustainability, 2022 Distributed generation (DG) has reformed the meaning of power generation from large scale to small scale, but unintentional islanding is the main issue when connecting DG and the utility grid. A lot of techniques have been used for detecting islanding, among these techniques, there are passive and active. The main problem of passive techniques is their
Yasser Ahmed Elshrief +1 more
exaly +2 more sources
Automatika, 2023 This article examines how an innovative Angular Symmetrical Components of Voltages be applied to islanding detection and voltage unbalance factor estimation at a photovoltaic inverter-based distribution unit. Positive and Negative Sequence Components are
V. Arivumani, Sujatha Balaraman
doaj +1 more source