directional relay
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Author(s):  
Sobia Ashraf ◽  
Ibrahim Evkay ◽  
Osman Hasan ◽  
Ugur S. Selamogullari ◽  
Mustafa Baysal


Author(s):  
Julio Andres Rodriguez Carvajal ◽  
Gustavo Ramos ◽  
David Felipe Celeitarodriguez


Author(s):  
Ahmed R. Adly ◽  
Ziad M. Ali ◽  
Mahmoud A. Elsadd ◽  
Hala M. Abdel Mageed ◽  
Shady H.E. Abdel Aleem
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Energies ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 4414
Author(s):  
Xu Li ◽  
Yuping Lu ◽  
Tao Huang

With high sensitivity and strong tolerance capability for the fault resistance, the fault component-based directional relay (FCBDR) has drawn considerable attention from industry and academia. However, the best application environment for FCBDR no longer exists when considering the large-scale connection of the doubly fed induction generator (DFIG)-based wind farms. Through a detailed analysis of the superimposed impedance of DFIG, this paper reveals that the performances of FCBDRs may be shown negatively impacted by the fault behaviors of DFIG when the crowbar protection inputs. In addition, this paper proposes a mitigation countermeasure to deal with those issues. The proposed countermeasure takes advantage of the different superimposed impedance features of DFIG compared with that of the synchronous generator (SG) to enhance the adaptability of the conventional FCBDRs. Extensive simulation results show that the proposed countermeasure can differentiate the fault direction clearly under different fault conditions.



2020 ◽  
Vol 71 (3) ◽  
pp. 203-209
Author(s):  
Mümtaz Yılmaz

AbstractIn this work, signal space diversity (SSD) method is exploited for a simple two-way relay channel (TWRC) with two end users mutually exchanging information. In order to ensure simplicity, the same rotation angle and interleavers are used under SSD framework. Also the well known decode-and-forward (DF) and amplify-and-forward (AF) protocols are adapted for the proposed TWRC. The analytical symbol error rate (SER) performance of the proposed scheme is evaluated for DF and AF protocols individually and evaluated through simulation results. The proposed scheme is shown to improve the performance of TWRC in terms of SER for both two protocols.



Author(s):  
Xingzhu Wang ◽  
Minghao Wen ◽  
Junchao Zheng ◽  
Yongxin Chen ◽  
Yu Qin ◽  
...  
Keyword(s):  


2020 ◽  
Vol 15 (4) ◽  
pp. 1607-1616
Author(s):  
Jung-Hun Lee ◽  
Min-Su Park ◽  
Hong-Seon Ahn ◽  
Kyung-Won Park ◽  
Jun-Seok Oh ◽  
...  


2020 ◽  
pp. 1-1
Author(s):  
Wael T. El-Sayed ◽  
Maher A. Azzouz ◽  
Hatem H. Zeineldin ◽  
Ehab F. El-Saadany


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