• 104 Citations
  • 6 h-Index
20042018
If you made any changes in Pure these will be visible here soon.

Research Output 2004 2018

  • 104 Citations
  • 6 h-Index
  • 20 Conference contribution
  • 1 Article
2018

Adaptive overcurrent protection to mitigate high penetration of distributed generation in weak distribution systems

El Naily, N., Saad, S. M., Wafi, J., El Haffar, A. & Husseinzadch, N., Aug 27 2018, 2017 9th IEEE-GCC Conference and Exhibition, GCCCE 2017. Institute of Electrical and Electronics Engineers Inc., 8448233

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Overcurrent protection
Distributed power generation
Electric power distribution
penetration
Relay protection
1 Citation (Scopus)

Enhancement of over current coordination for a distribution system connected to a microgrid using unidirectional fault current limiter

Saad, S. M., Naily, N. E., Wafi, J., El Haffar, A. & Mohamed, F. A., May 21 2018, 2018 9th International Renewable Energy Congress, IREC 2018. Institute of Electrical and Electronics Engineers Inc., p. 1-6 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fault current limiters
Distributed power generation
Electric power distribution
Relay protection
Electric fault currents

Experimental and EMTP modeling of numerical transformer protection for enhancing relay transient performance: A case study

Saad, S. M., El Naily, N. & El Haffar, A., Aug 27 2018, 2017 9th IEEE-GCC Conference and Exhibition, GCCCE 2017. Institute of Electrical and Electronics Engineers Inc., 8448174

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Transformer protection
Adenosinetriphosphate
Power transformers
relay
transformers

MEC based scaling laws for a tape-wound transformer with voltage regulation and core loss included

Tahir, A., El Haffar, A., Sudhoff, S. & Pekarek, S., Aug 27 2018, 2017 9th IEEE-GCC Conference and Exhibition, GCCCE 2017. Institute of Electrical and Electronics Engineers Inc., 8447913

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Scaling laws
transformers
Voltage control
scaling laws
Tapes

Simulation of distance protection for parallel transmission lines

Al-Mahrooqi, M., Al-Yaqoubi, M., Al-Ghafri, H., Al-Saadi, M., Soliman, H. & El Haffar, A., Aug 27 2018, 2017 9th IEEE-GCC Conference and Exhibition, GCCCE 2017. Institute of Electrical and Electronics Engineers Inc., 8447970

Research output: Chapter in Book/Report/Conference proceedingConference contribution

transmission lines
Electric lines
Electricity
Electric potential
simulation
2017
4 Citations (Scopus)

Mitigating the impact of Distributed Generator on medium Distribution Network by adaptive protection scheme

El Naily, N., Saad, S. M., Elhaffar, A., Hussein, T. & Mohamed, F. A., May 10 2017, 2017 8th International Renewable Energy Congress, IREC 2017. Institute of Electrical and Electronics Engineers Inc., 7925989

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Distributed power generation
Electric power distribution
Adenosinetriphosphate
Power quality
Topology
2015

Optimizing differential protection settings for power transformers

Saad, S. M., Elhaffar, A. & El-Arroudi, K., 2015, Proceedings - International Conference on Modern Electric Power Systems, MEPS 2015. Institute of Electrical and Electronics Engineers Inc., 7477186

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Power transformers
Adenosinetriphosphate
2012
5 Citations (Scopus)

An optimized fault location system based on traveling waves for transmission networks

Elhaffar, A., 2012, 2012 16th IEEE Mediterranean Electrotechnical Conference, MELECON 2012. p. 954-958 5 p. 6196585

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electric fault location
Electric power transmission networks
Adenosinetriphosphate
Discrete wavelet transforms
Observability
2010
18 Citations (Scopus)

Bayesian selectivity technique for earth fault protection in medium-voltage networks

Elkalashy, N. I., Elhaffar, A. M., Kawady, T. A., Tarhuni, N. G. & Lehtonen, M., Oct 2010, In : IEEE Transactions on Power Delivery. 25, 4, p. 2234-2245 12 p., 5524100.

Research output: Contribution to journalArticle

Discrete wavelet transforms
Electric instrument transformers
Earth (planet)
Electric potential
Electric fault currents
2 Citations (Scopus)

Evaluation of chirp detector-based travelling wave localization of earth faults in MV networks

Elkalashy, N. I., Tarhuni, N. G., Elhaffar, A. M. & Lehtonen, M., 2010, 10th IET International Conference on Developments in Power System Protection, DPSP 2010 - Managing the Change. 558 CP ed. Vol. 2010.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electric instrument transformers
Chirp modulation
Earth (planet)
Detectors
Adenosinetriphosphate
2009
10 Citations (Scopus)

Evaluation of probabilistic-based selectivity technique for earth fault protection in MV networks

Elhaffar, A. M., Elkalashy, N. I., Tarhuni, N. G., Abdel-Fattah, M. F. & Lehtonen, M., 2009, 2009 IEEE Bucharest PowerTech: Innovative Ideas Toward the Electrical Grid of the Future. 5282189

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electric instrument transformers
Earth (planet)
Electric potential
Adenosinetriphosphate
Discrete wavelet transforms
4 Citations (Scopus)

Windowed standard deviation-based transient feature extraction for earth fault protection in MV networks

Elkalashy, N. I., Elhaffar, A. M., Abdel-Fattah, M. F., Lehtonen, M. & Tarhuni, N. G., 2009, Proceedings of the 44th International Universities Power Engineering Conference, UPEC2009. 5429586

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Feature extraction
Earth (planet)
Adenosinetriphosphate
Electric potential
2008
3 Citations (Scopus)

Evaluation of travelling wave fault location methods based on field measurements

El Haffar, A. & Lehtonen, M., 2008, IET 9th International Conference on Developments in Power Systems Protection, DPSP 2008. 536 CP ed. p. 600-604 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electric fault location
Electric power transmission networks
Travel time
Wavelet transforms
Frequency bands
7 Citations (Scopus)

Multi-end traveling wave fault location based on current traveling waves

Elhaffar, A. & Lehtonen, M., 2008, 16th Power Systems Computation Conference, PSCC 2008. Power Systems Computation Conference ( PSCC )

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electric fault location
Wavelet transforms
Electric instrument transformers
Electric power transmission networks
Adenosinetriphosphate
2007
1 Citation (Scopus)

Effect of current transformer transient models on the detection of traveling waves

Elhaffar, A. & Lehtonen, M., 2007, LESCOPE'06: 2006 Large Engineering Systems Conference on Power Engineering - Conference Proceedings. p. 158-161 4 p. 4059386

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electric instrument transformers
Electric fault location
Frequency response
Transfer functions
Transducers
6 Citations (Scopus)

Experimental investigations on multi-end fault location system based on current traveling waves

Elhaffar, A., Elkalashy, N. I. & Lehtonen, M., 2007, 2007 IEEE Lausanne POWERTECH, Proceedings. p. 1141-1146 6 p. 4538476

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electric fault location
Electric instrument transformers
Wavelet transforms
Electric power transmission networks
Adenosinetriphosphate
12 Citations (Scopus)

High frequency current transformer modeling for traveling waves detection

Elhaffar, A. & Lehtonen, M., 2007, 2007 IEEE Power Engineering Society General Meeting, PES. 4275992

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electric instrument transformers
Electric fault location
MATLAB
Frequency response
Transfer functions
3 Citations (Scopus)

Impact of high resistance arcing fault characteristics on behavior of DWT-based detection in MV networks

Elkalashy, N. I., Elhaffar, A., Lehtonen, M., Darwish, H. A., Izzularab, M. A. & Taalab, A. M. I., 2007, 2nd International Conference on Electrical and Control Technologies, ECT 2007. Kaunas University of Technology, p. 171-176 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Discrete wavelet transforms
Earth (planet)
Electric potential
Adenosinetriphosphate
Electric grounding
3 Citations (Scopus)

Signal processing applications to current traveling wave fault locators for EHV transmission networks

Elhaffar, A. & Lehtonen, M., 2007, ICSPC 2007 Proceedings - 2007 IEEE International Conference on Signal Processing and Communications. p. 616-619 4 p. 4728394

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electric power transmission networks
Signal processing
energy
Time delay
travel
2005
5 Citations (Scopus)

An improved GPS current traveling-wave fault locator in EHV transmission networks using few recordings

Elhaffar, A. & Lehtonen, M., 2005, 2005 International Conference on Future Power Systems. Vol. 2005. 1600598

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electric power transmission networks
Global positioning system
Electric fault location
Adenosinetriphosphate
Electric power systems
2004
13 Citations (Scopus)

Travelling waves based earth fault location in 400 kV transmission network using single end measurement

Elhaffar, A. & Lehtonen, M., 2004, 2004 Large Engineering Systems Conference on Power Engineering - Conference Proceedings; Theme: Energy for the Day After Tomorrow. p. 53-56 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electric fault location
Electric power transmission networks
Earth (planet)
Wavelet transforms
Antenna grounds