An Analytical Zero Sequence Method to Locate Fault in Distribution Systems Rich in DG

2022 ◽  
pp. 1-1
Author(s):  
Debora R. R. Penido ◽  
Leandro R. Araujo ◽  
Victor T. S. Rodrigues ◽  
Kelvin Bryan do Nascimento
Keyword(s):  
Distribution Systems ◽  
Zero Sequence ◽  
Sequence Method

Analysis and mitigation of excessive zero-sequence harmonic currents in distribution systems

PES T&D 2012 ◽  
2012 ◽  
Author(s):  
Jens Schoene ◽  
Reigh Walling ◽  
Bo Yang ◽  
Bernd Niemann ◽  
Vadim Zheglov ◽  
...  
Keyword(s):  
Distribution Systems ◽  
Harmonic Currents ◽  
Zero Sequence

Grounding Faulted Feeder Detection Based on Fuzzy Clustering Algorithms

2011 ◽  
Vol 58-60 ◽  
pp. 989-994
Author(s):  
Yuan Yuan Wang ◽  
Jin Bao Jian ◽  
Xiang Jun Zeng ◽  
Li Hong Long
Keyword(s):  
Power Systems ◽  
Fuzzy Clustering ◽  
Power Distribution ◽  
Distribution Systems ◽  
Clustering Algorithms ◽  
High Sensitivity ◽  
Detection Methods ◽  
Earth Fault ◽  
High Impedance ◽  
Zero Sequence

Many power distribution systems have been operated with neutral ineffectively earthed, and earth fault current is no more than a few tens of amperes. Traditional earth fault detection methods based on zero sequence current has poor precision and sensitivity in this case. For improvement, a novel principle for feeder grounding fault protection based on fuzzy clustering algorithms is presented in this paper. First, the historical data are divided into two groups by fuzzy clustering algorithms. The space relative distance among detected pattern and two cluster centers is then calculated to discriminate the faulted feeder. It can detect high impedance grounding faults (HIGF). The scheme has been verified by EMTP simulation, and results show that the proposed scheme always trips all kinds of grounding faults with high sensitivity and robustness in neutral ineffectively earthed power systems (NIEPS).

scholarly journals IEC 61850-Based Centralized Protection against Single Line-To-Ground Faults in Ungrounded Distribution Systems

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 722
Author(s):  
Soon-Ryul Nam ◽  
Woong-Hie Ko ◽  
Sopheap Key ◽  
Sang-Hee Kang ◽  
Nam-Ho Lee
Keyword(s):  
Computer Aided Design ◽  
Distribution Systems ◽  
Electronic Device ◽  
Single Line ◽  
International Electrotechnical Commission ◽  
Iec 61850 ◽  
Protection Scheme ◽  
Zero Sequence ◽  
Intelligent Electronic Device ◽  
Electro Magnetic

We developed an International Electrotechnical Commission (IEC) 61850-based centralized protection scheme to prevent single line-to-ground (SLG) faults in the feeders and busbars of ungrounded distribution systems. Each feeder intelligent electronic device (IED) measures its zero-sequence current and voltage signals and periodically transmits zero-sequence phasors to a central IED via a Generic Oriented Object Substation Event message. Using the zero-sequence phasors, the central IED detects SLG faults in feeders and busbars. To achieve centralized protection, angle differences between the zero-sequence currents and voltage phasors are exploited, and their calculation compensates for data desynchronization. The feeder IEDs were implemented using the MMS-EASE Lite library, while the transmitted zero-sequence phasors were calculated based on fault signals simulated by Power System Computer Aided Design / Electro-Magnetic Transient Design and Control (PSCAD/EMTDC). The central IED determined if the SLG fault was in a feeder or busbar by aggregating and analyzing the zero-sequence phasors received from the feeder IEDs. The results confirmed the validity and efficiency of our centralized protection scheme.

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