Protection of Double Circuit Transmission Lines

Apostolov, Alexander; Tholomier, D.; Sambasivan, S.; Richards, S.

doi:10.1109/cpre.2007.359893

Cited by 35 publications

(23 citation statements)

References 2 publications

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“…Trip circuit Trip circuit (1) where and denote the currents in the corresponding phases of circuit 1 and circuit 2, respectively. If the difference between the amplitudes of the parallel circuits currents exceeds the threshold , a trip signal would be sent to the associated CB.…”

Section: A Proposed 2-d Cross-differential Techniquementioning

confidence: 99%

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Adaptive Protection of Parallel Transmission Lines Using Combined Cross-Differential and Impedance-Based Techniques

Sanaye‐Pasand

Jafarian

2011

IEEE Trans. Power Delivery

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This paper introduces a state-diagram-based protective algorithm for parallel circuit transmission lines using local information obtained at the relay bus. A new cross-differential technique is proposed which compares the currents in the corresponding phases of the parallel circuits in a 2-D space. A companion impedance-based algorithm is used to cover the evolving faults and some conditions in which the cross-differential technique is not able to discriminate the internal faults alone. The effect of the mutual coupling between parallel circuits on the measured impedances is adaptively compensated according to the status of the parallel circuit currents in the segmented 2-D space. The proposed state-diagram-based algorithm combines the outputs of the cross-differential and impedance-based techniques to provide a reliable response under all of the operating statuses of the parallel circuits. Extensive simulation studies using PSCAD/EMTDC software indicate that the proposed approach provides very reliable protection for the double-circuit transmission lines. It covers intercircuit and evolving faults, and is able to reliably select the faulted phases.

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Section: A Proposed 2-d Cross-differential Techniquementioning

confidence: 99%

“…On the other hand, the different possible configurations of parallel circuits depending on the transmission-line operating status, combined with the mutual coupling effect as well as possibility of the occurrence of intercircuit faults, make their protection a challenging problem [1].…”

Section: Introductionmentioning

confidence: 99%

Adaptive Protection of Parallel Transmission Lines Using Combined Cross-Differential and Impedance-Based Techniques

Sanaye‐Pasand

Jafarian

2011

IEEE Trans. Power Delivery

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“…All these situations could cause some mutual coupling between lines affecting the ground current measured by a protective relay. As a result, apparent impedance calculations will be affected by the current flowing in the parallel TL [47].…”

Section: Zero-sequence Mutual Couplingmentioning

confidence: 99%

Negative Sequence-Based Schemes for Power System Protection - Review and Challenges

Al-Sachit

Sanjari

Nair

2018

2018 Australasian Universities Power Engineering Conference (AUPEC)

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This paper presents a review of the negative sequence-based protection relays development and their applications on electrical power networks and discusses the related challenges. Recent power system requires selective, reliable, rapid fault detection and clearance mechanisms especially for the transmission line networks, which are highly exposed to environmental incidents. Most of the negative sequence protection techniques and recent challenges are discussed in this paper.

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“…Current differential protection has been playing an important role in transmission line protection [3,4]. The longitudinal current differential protections use the differential current between both ends of the lines and need a communication link [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

A cross-differential protection scheme for quadruple-circuit lines with asymmetric parameters

Liu

Tai

Fan

et al. 2015

Int. Trans. Electr. Energ. Syst.

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SUMMARYQuadruple-circuit lines with asymmetric parameters have been widely built to increase power transmission capacity. The asymmetric parameters of the lines lead to different current characteristics compared with traditional lines. A cross-differential protection scheme based on negative sequence fault current is proposed to overcome the deficiency of traditional protection scheme. The fault superimposed networks of quadruplecircuit lines are discussed to analyze the fault sequence currents of each line. Differential currents are deduced to form the relay criterion. The threshold values of protection are calculated according to characteristics of superimposed fault sequence currents. Corresponding operational logic is also introduced to ensure the stability and reliability of protection. Finally, the reliability of the proposed protection scheme is verified.

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Protection of Double Circuit Transmission Lines

Cited by 35 publications

References 2 publications

Adaptive Protection of Parallel Transmission Lines Using Combined Cross-Differential and Impedance-Based Techniques

Adaptive Protection of Parallel Transmission Lines Using Combined Cross-Differential and Impedance-Based Techniques

Negative Sequence-Based Schemes for Power System Protection - Review and Challenges

A cross-differential protection scheme for quadruple-circuit lines with asymmetric parameters

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