scholarly journals Investigating the impact of network security on the line current differential protection system

2018 ◽  
Vol 2018 (15) ◽  
pp. 1199-1203
Author(s):  
Andreas Aichhorn ◽  
Andreas Unterweger ◽  
René Mayrhofer ◽  
Dominik Engel
Keyword(s):  
Network Security ◽  
Protection System ◽  
Differential Protection ◽  
Line Current ◽  
Current Differential Protection ◽  
The Impact

scholarly journals The Communication System and its Impacts on Line Current Differential Protection in Distributed Feeder Automation

Energies ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1298
Author(s):  
Yilong Duan ◽  
Longfu Luo ◽  
Yong Li ◽  
Yijia Cao
Keyword(s):  
Communication System ◽  
Design Method ◽  
Parameter Determination ◽  
Differential Protection ◽  
Feeder Automation ◽  
Communication Mode ◽  
Line Current ◽  
Current Differential Protection ◽  
On Line ◽  
The Impact

As one of the core technologies of distributed feeder automation (DFA), line current differential protection (LCDP) can locate faults quickly and accurately and have the ability to cope with multi-directional flow. However, LCDP algorithm has high requirements for communication speed, and is sensitive to communication quality. In order to apply the LCDP algorithm to a real project, the communication system and its impacts on LCDP need to be studied in depth. In this paper, the design method of a communication system for LCDP, including communication mode, topology, communication protocol, and synchronization, is analyzed in detail. For better parameter determination, the communication models are investigated, and the impact of time delay, data loss, and jitter on LCDP are discussed. Further, the distribution network based on a real project is built in a cyber-physical co-simulation environment, and the impact of electrical fails and communication fails on LCDP are studied. The results show that the design method and parameters determination method proposed in this paper are effective.

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