Results 251 to 260 of about 781,206 (295)

Islanding Detection of Hybrid Distributed Generation Under Reduced Non-Detection Zone

IEEE Transactions on Smart Grid, 2018
Future distribution systems are faced with more challenges on islanding detection due to the increasing penetration level of inverter-based distributed generators (DGs). Different DG technologies, inverter control as well as other advanced inverter functions, such as fault ride through are challenging the capability of islanding detection schemes.
Qiushi Cui, Khalil El-Arroudi, Geza Joos
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Three-dimensional Non-detection Zone for Assessing Anti-islanding Detection Schemes

Electric Power Components and Systems, 2010
Abstract The non-detection zone is a concept used to evaluate anti-islanding detection methods. The non-detection zone is defined as the loading condition for which an islanding detection method would fail to operate in a timely manner, and it is represented in terms of the load parameters.
Hatem H. Zeineldin, Ahmed Saif, Magdy M. A. Salama, A. F. Zobaa   +3 more
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Phase-locked loop effect on non-detection zone of unintentional islanding

2015 17th European Conference on Power Electronics and Applications (EPE'15 ECCE-Europe), 2015
The number of small power distributed generators connected to the low voltage distribution networks has increased the possibility of unintentional islanding operations. In this paper, the influence of the Synchronous Reference Frame — Phase Locked Loop (SRF-PLL) for single-phase and three-phase inverter, combined with the wider frequency and voltage ...
SGARBOSSA, RICCARDO, Santa, Luca Dalla, MATTAVELLI, PAOLO, PETUCCO, ANDREA, CAVAZZANA, FRANCESCO, Cerretti, Alberto   +5 more
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Occurrence Probability and Prediction of Unintentional Islands Using Non Detection Zones

2019 IEEE Power & Energy Society General Meeting (PESGM), 2019
As a result of the increasing share of distributed generation in electric supply, the probability of unintentional electrical islands is also increasing. Unintentional islands occur when sub-grids with balanced active and reactive power are separated. Stable unintentional islands are hard to detect and pose a risk for normal grid operation as well as ...
Sebastian Palm, Peter Schegner
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Active Anti-Islanding technique with reduced Non-Detection Zone for Centralized Inverters

2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia), 2018
This paper presents an active anti-islanding scheme for grid-tied centralized inverters for large Photovoltaic (PV) power plants. The proposed technique involves appropriate reactive power injection into the grid which results in the positive/negative rate of change of frequency.
Prashant Jain, Vivek Agarwal, Bishnu Prasad Muni, Eswar Rao, Deepak Gehlot, S. Gautam Kumar   +5 more
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Modeling and design of phase shift anti-islanding method using non-detection zone

Solar Energy, 2007
Abstract Islanding phenomenon of a grid-connected independent generator like a photovoltaic (PV) system occurs when a section of a utility system is disconnected from the main utility voltage source, but the independent generator continues to energize the utility lines in the isolated section. Since islanding causes a safety hazard to utility service
Byunggyu Yu, Mikihiko Matsui, Youngseok Jung, Gwonjong Yu   +3 more
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Reformative Arithmetic for Non Detection Zone Islanding Detection Based on the Voltage Shift Technique

Applied Mechanics and Materials, 2013
The quick & exact anti-islanding is a mandatory feature for grid-connected distributed generation system. The conventional passivity detection method has the biggish blind section and lower reliability, especially when the grid-connected inverter export power and burthen power are balanceable; the islanding detection often is disabled. And that the
Ji Hong Zhang, Pei Hong Yang, Zhen Kui Wu   +2 more
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Experimental Investigation on Non Detection Zones of Active Frequency Drift Method for Anti-islanding

IECON 2007 - 33rd Annual Conference of the IEEE Industrial Electronics Society, 2007
The islanding effect of utility-interactive photovoltaic (UIPV) system may cause hazards for the grid equipment, and even danger to grid personnel. Therefore, reliable islanding detection is one of the crucial factors to connect grid for UIPV system. Over the years, a number of research works have been concentrated on the techniques of non-detection ...
Hui Wang, Furong Liu, Yong Kang, Jian Chen, Xueliang Wei   +4 more
openaire   +1 more source

A Novel Islanding Detection Method With Reduced Non-Detection Zones For Different Distributed Generation Units

2020 International Conference on Smart Grids and Energy Systems (SGES), 2020
In distribution system studies, Distributed Generation (DG) has become an important entity due to the power demand. The DG provides advantages such as improving the voltage profile, power loss reduction, increased power reliability, stability, and quality. The major issue that needs consideration is the islanded operation of the system.
Sowmya Ramachandradurai, Narayanan. K
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Instability criterion to eliminate the Non-Detection Zone of the Sandia Frequency Shift method

2009 IEEE/PES Power Systems Conference and Exposition, 2009
Sandia Frequency Shift (SFS) islanding detection method is considered amongst the most efficient islanding detection methods that possesses small Non-Detection Zone (NDZ) for inverter based Distributed Generation (DG). The NDZ of the SFS depends to a great extent on its design parameters.
H. H. Zeineldin, S. Kennedy
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