Results 251 to 260 of about 2,150 (299)

[Detection of cheese fly on the island Kunashir].

Meditsinskaia parazitologiia i parazitarnye bolezni, 2003
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Islanding detection and connection requirements

2007 IEEE Power Engineering Society General Meeting, 2007
This paper reflects how anti-islanding protection has developed with increasing DG penetration. Starting from a local issue it has developed to possibly affect system security. The focus here is on how islanding detection methods and anti-islanding protection settings relate to distribution level and TSO requirements.
O. Samuelsson, N. Strath
core   +3 more sources

Islanding Detection and Enhancement of Microgrid Performance

IEEE Systems Journal, 2018
Nowadays, renewable energy sources (RES) are widely used in the distribution system. Despite the advantages of RES in the system, they also introduce some problems such as unintentional islanding, protection concerns, reverse power flow, etc. Due to the unpredictable faults or scheduled maintenance plans, a distribution system can be sectionalized into
Aref Pouryekta, Vigna K. Ramachandaramurthy, Nadarajah Mithulananthan, Arulampalam Atputharajah   +3 more
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A New Lissajous-Based Technique for Islanding Detection in Microgrid [PDF]

IEEE Transactions on Smart Grid
This study presents a novel technique for islanding detection in microgrid based on Lissajous figure of voltage and current signals. The Lissajous figure reveals distinct pattern during islanding which can segregate the islanding event from other non-islanding disturbance events such as switching transients and faults.
Yadala Pavankumar, Sudipta Debnath, Subrata Paul   +2 more
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Detection of Islanding for Microgrid Based on Discrimination Factor of Islanding

2020 21st National Power Systems Conference (NPSC), 2020
The present work proposes an islanding identification scheme based on the discriminating factor of islanding (DFI) extracted by the superimposed angle of impedance. The suggested methodology effectively identifies islanding within half of the cycle, discriminates islanding events (IEs) from non-islanding events (NIEs) at 0% power mismatch (PM), and ...
Pravin Kumar, Vishal Kumar, Barjeev Tyagi   +2 more
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Synchrophasors for island detection

2012 38th IEEE Photovoltaic Specialists Conference, 2012
Detection and prevention of unintentional islands powered by distributed generators like photovoltaics remains a key concern of utility protection engineers, especially in high-penetration and grid-support environments. These evolving circumstances dictate that new island detection tools are needed.
M. Ropp, S. Perlenfein, D. Joshi, C. Mettler, M. Mills-Price, M. Scharf, K. Gubba Ravikumar, G. Zweigle   +7 more
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Islanding detection in microgrids

2013 IEEE Power & Energy Society General Meeting, 2013
The idea of reshaping existing centralized electricity networks to decentralized small scale local power networks namely micro-grids, operating whether autonomous or interconnected to main distribution grid, became an important discussion. Islanding of a generator inside the micro-grid can cause problems in operation and management of the network ...
Mehmet H. Cintuglu, Osama A. Mohammed
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Unintentional islanding detection in microgrid

2017 International Conference on Energy, Communication, Data Analytics and Soft Computing (ICECDS), 2017
With the growing demand of electricity, conventional generation is no longer the most efficient method. This brings the concept of distributed generation in the picture, in which there are generation sources at load end. This type of structure is called microgrid. The concept of microgrid is still under development.
Abhishek Sharma, R. Sunitha
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Islanding detection in smart grids

2010 IEEE Energy Conversion Congress and Exposition, 2010
All distributed generators (DG), especially those connected to low voltage distribution grids are required to detect islanding conditions. The methods for detecting islanding are classified in three main categories: passive, active and communication based.
Adrian Timbus, Alexandre Oudalov, Carl N.M. Ho   +2 more
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Islanding detection in DC network

2017 52nd International Universities Power Engineering Conference (UPEC), 2017
Nowadays, the expansion of renewable energies (the wind, solar, ocean wave, fuelcell-some of them are natively DC) in power system as a potential solution for the environmental protection and lack of energy when the traditional energies are going to be exhausted.
Tran Thanh Son, Goro Fujita, Nguyen Duc Tuyen   +2 more
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