Results 1 to 10 of about 781,206 (295)
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 +5 more sources
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
doaj +2 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
doaj +4 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 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
doaj +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
Energies, 2022 The protection against the unintentional islanding of Grid-Tied inverters is an important electrical security issue addressed by the main Standards. This concern is justified in face of the fact that unintentional islanding can lead to abrupt variations ...
Ênio Costa Resende +2 more
doaj +1 more source
Islanding Detection with Reduced Non-Detection Zones and Restoration by Reconfiguration
Energies, 2023 The development and use of PV (Photovoltaic), Wind, and Hydro-based Distributed Generation (DG) is presently on the rise worldwide for improving stability and reliability, and reducing the power loss in the distribution system with reduced emission of harmful gases.
Sowmya Ramachandradurai +3 more
openaire +2 more sources
Unintentional Passive Islanding Detection and Prevention Method with Reduced Non-Detection Zones
Energies, 2022 Islanding detection and prevention are involved in tandem with the rise of large- and small-scale distribution grids. To detect islanded buses, either the voltage or the frequency variation has been considered in the literature. A modified passive islanding detection strategy that coordinates the V-F (voltage–frequency) index was developed to reduce ...
Sowmya Ramachandradurai +2 more
openaire +2 more sources
An Islanding Detection Technique for Inverter-Based Distributed Generation in Microgrids
Energies, 2020 This article proposes a new passive islanding detection technique for inverter-based distributed generation (DG) in microgrids based on local synchrophasor measurements.
Mazaher Karimi +4 more
doaj +1 more source