Li, Mingzhen

Wenjun, Zhou

Zhou, Chengke

English

This two-part paper proposes a revised method for calculating high voltage (HV) cable sheath currents, and for fault location of cross-bonded HV cable systems. The equivalent circuit and the cable impedance per unit length under short-circuit fault conditions are revised from those under non-fault conditions. Part 1 of this paper proposes a revised phasor domain mathematical model for the sheath current calculation under fault conditions, following demonstration that short-circuit faults can cause changes in the equivalent circuit of the cable metal sheath, and cause changes in the cable impedance per unit length. The calculation results, as given in a case study, show that there exists a unique relation between the fault position and the sheath fault currents, making it possible to locate a fault by analyzing the characteristics of the sheath currents during a fault. Part 2 of the paper focuses on the fault location method via sheath current monitoring.</p

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A revised model for calculating HV cable sheath current under short-circuit fault condition and its application for fault location - Part 1: the revised model

https://researchonline.gcu.ac.uk/files/27242603/A_Revised_Model_for_Calculating_HV_Cable_Sheath_Current_under_Short_circuit_Fault_Condition_and_Its_Application_for_Fault_Location_Part_1_The_Revised.pdf

A revised model for calculating HV cable sheath current under short-circuit fault condition and its application for fault location - Part 1: the revised model

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