A robust fault location algorithm for single line-to-ground fault in double-circuit transmission systems

Prasad, Varsha; Aravindhan, R.

doi:10.1109/iceets.2013.6533527

Cited by 1 publication

(2 citation statements)

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“…The protection of the double circuit lines is extra complicated than single line due to the reasons of: (i) the combining of the double circuit lines, fault initial conditions; (ii) the complex fault scenarios; (iii) the effect of the mutual coupling among the double circuits and the current reversal . Moreover, unwanted operation of transmission line protection can be because of cascade faults, isolation of interconnected subsystems, and interruptions of big scale power supplies.…”

Section: Introductionmentioning

confidence: 99%

“…However, they mostly neglect the influence of distributed capacitance that has the ability to affect the accuracy, as they use a lumped parameter . Two‐end techniques use two ends measurement, therefore, from the economic point of view, such techniques have disadvantages due to the communication and synchronization . A polynomial equation‐based single‐ended technique was reported in reference , however, it needs both voltage and current measurements.…”

Section: Introductionmentioning

confidence: 99%

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Ultra‐High‐Speed Non‐Unit Protection and Fault Location for Parallel Transmission Lines Earth Faults

Mourad

Shehab-Eldin

2019

IEEJ Transactions Elec Engng

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This article proposes a powerful ultra-high-speed technique for earth fault distance protection of double-circuit power transmission lines. The proposed technique uses the zero and positive sequence of the current signals. The technique presents a discriminating method based on the appearance of zero sequences, the zero sequence magnitude, and the time arrival instants of zero and positive sequence at the relaying point. The suggested technique consists of three stages. Stage 1; the polarity technique, which is designed to detect and classify faults within the protected zone. Stage 2; the ratio technique, which is designed to identify in which circuit the fault is involved. Stage 3; it is employed to calculate the distance of faults. Extensive numbers of simulations were conducted to test the action of the proposed technique. Results show that the technique provides a speed, secure, and dependable protection technique of double-circuit transmission lines even for remote fault, high resistance fault, and a low inception time fault. They also avoid the unbalanced load-switching effect and the current transformer (CT) saturation problems.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%