TY - JOUR
T1 - A novel pilot protection scheme for transmission lines based on current distribution histograms and their Bhattacharyya coefficient
AU - Weng, Hanli
AU - Chen, Hao
AU - Wu, Lei
AU - Huang, Jingguang
AU - Li, Zhenxing
N1 - Publisher Copyright:
© 2021
PY - 2021/5
Y1 - 2021/5
N2 - The current waveform characteristics at both ends of a transmission line under different disturbances are represented by means of probability distribution histograms. By adopting the Bhattacharyya distance (BD) algorithm to quantify the similarity of current distribution histograms, a novel scheme of pilot protection for transmission lines based on Bhattacharyya coefficient (BC) is put forward. The proposed scheme can correctly identify internal faults, external faults, and faults accompanied with current transformer (CT) saturation of transmission lines. It also shows good performance in the cases of abnormal samples. The validity of the proposed scheme is evaluated by various simulation and dynamic analog experiment tests.
AB - The current waveform characteristics at both ends of a transmission line under different disturbances are represented by means of probability distribution histograms. By adopting the Bhattacharyya distance (BD) algorithm to quantify the similarity of current distribution histograms, a novel scheme of pilot protection for transmission lines based on Bhattacharyya coefficient (BC) is put forward. The proposed scheme can correctly identify internal faults, external faults, and faults accompanied with current transformer (CT) saturation of transmission lines. It also shows good performance in the cases of abnormal samples. The validity of the proposed scheme is evaluated by various simulation and dynamic analog experiment tests.
KW - Anti-noise robustness
KW - Bhattacharyya coefficient (BC)
KW - CT saturation
KW - Current distribution histograms
KW - Pilot protection
UR - http://www.scopus.com/inward/record.url?scp=85100372947&partnerID=8YFLogxK
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U2 - 10.1016/j.epsr.2021.107056
DO - 10.1016/j.epsr.2021.107056
M3 - Article
AN - SCOPUS:85100372947
SN - 0378-7796
VL - 194
JO - Electric Power Systems Research
JF - Electric Power Systems Research
M1 - 107056
ER -