Permanent Fault Location for Three-Core Cable Using Multiconductor Coupling Model

Tang, Zehua; Zhang, Peng; Liang, Rui; Peng, Nan; Cheng, Ming; Qiao, Yu

doi:10.1109/tpwrd.2021.3077606

Cited by 6 publications

(4 citation statements)

References 26 publications

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“…In ref. [18], the voltage and current equations for determining the fault distance of cable are established by introducing grounding current, thus the accurate location of three‐core armoured cable in case of permanent fault is realised. However, considering the limitation of actual measurement, this method further ignores the three‐phase shielding layer of cable, simplifies the seven‐conductor cable model to four‐conductor cable model, and a three‐core cable defect type identification method has not been studied in refs.…”

Section: Introductionmentioning

confidence: 99%

“…However, considering the limitation of actual measurement, this method further ignores the three‐phase shielding layer of cable, simplifies the seven‐conductor cable model to four‐conductor cable model, and a three‐core cable defect type identification method has not been studied in refs. [17, 18].…”

Section: Introductionmentioning

confidence: 99%

“…There is strong coupling between each conductor, which is not conducive to cable defect and fault identification. In recent years, some scholars have proposed to use the voltage and current vectors at both ends of three-core cable to realise the fault location of three-core cable [17,18]. Because it does not need high sampling frequency and strict synchronisation of the two vectors when collecting voltage and current vectors, and this method is not affected by fault conditions, it provides a new research direction for the fault location method of three-core cable.…”

Section: Introductionmentioning

confidence: 99%

“…However, considering the limitation of actual measurement, this method further ignores the threephase shielding layer of cable, simplifies the seven-conductor cable model to four-conductor cable model, and a three-core cable defect type identification method has not been studied in refs. [17,18]. In this paper, we propose a mathematical method for local defect and fault type identification of 10 kV three-core armoured cables based on input impedance spectrum in distribution networks.…”

Section: Introductionmentioning

confidence: 99%

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A mathematical method for local defects and faults identification of 10 kV three‐core cable based on input impedance spectrum

Wang

Zhang

Yao

et al. 2022

IET Science Measure & Tech

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Due to the strong coupling among the conductors of 10 kV three-core armored cables and the difficulty in identifying its defects and fault types, a method is proposed based on the input impedance spectrum. Firstly, the phase mode transformation matrix of a three-core cable is obtained by combining the multi-conductor transmission line theory with the loop analysis method to realize decoupling between conductors. Secondly, the input impedance matrices of a cable under different situations are derived. Based on this, a method is proposed to identify the local defects and fault types. The capacitive defects and inductive defects are identified according to the left or right offset of the amplitude spectrum; the short circuit and break faults of the cable can be identified according to the number of resonant points in the amplitude spectrum and the initial phase angle of the phase spectrum. Finally, to verify the correctness of the proposed method, a 10 kV three-core cable is taken as an example to carry out PSCAD circuit simulation and practical test. The results show that the proposed method can effectively identify the local defects and fault types of the three-core cable.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations