Abstract
The three-phase cable line consists of three single-core cables, which can have conductive sheaths, grounded at either one end only, or at both ends. If they are grounded at both ends, currents flow through sheaths of single-core cables during both balanced and unbalanced loads and the line-to-ground short circuit in a grounded network. During the line-to-ground short circuit, currents flow through cable sheaths and through the ground. When cable sheaths are grounded at one end only, currents do not flow through the sheaths and the influence of the short circuit current on neighboring electrical circuits is greatest. Compensation conductors are used to reduce this effect. Reduction effect of compensation conductors laid alongside three power single-core cables in flat formation is analyzed in this paper. Calculation methods of current reduction factor are also described.
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