Adaptive Autoreclosing Scheme for Line-to-Line Nongrounded Faults on Double-Circuit Transmission Lines Based on Phase-to-Phase Reactive Power

Zhou, Weiji; Li, Fengting; Wang, Bin; Gong, Lijiao; Yang, Shanglin

doi:10.1109/access.2020.3014179

Cited by 5 publications

(3 citation statements)

References 23 publications

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“…4) Other available approaches: A reactive power based method, available in [17], can protect parallel lines only for ungrounded faults. The modal current based approach available in [18] for parallel line protection requires reliable communication channel for its operation.…”

Section: B Literature Reviewmentioning

confidence: 99%

Nonunit Protection of Parallel Lines Connecting Solar Photovoltaic Plants

Chowdhury

Paladhi

Pradhan

2023

IEEE Systems Journal

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Fault current control by solar plant converters introduces different fault characteristics compared to conventional synchronous generator based systems resulting in numerous issues to the available protection methods. In this paper, the issues with conventional distance relaying is analyzed while protecting parallel lines connecting solar plant to grid and a new protection method is proposed using local voltage and current data. The proposed non-unit protection method derives positive sequence reactive powers for both lines for different solar plant operating conditions and uses their difference to ensure correct zone-1 protection. For faults during single circuit operation, the method includes an additional scheme comprising of instantaneous zerosequence overcurrent check and delayed distance relaying to derive correct protection decision. Performance of the proposed non-unit protection method is tested for parallel lines connecting solar plant in a 39-bus test system for different situations using PSCAD/EMTDC simulated data and found to be accurate. Comparative assessment reveals the high reliability of the proposed method.

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Section: B Literature Reviewmentioning

confidence: 99%

Nonunit Protection of Parallel Lines Connecting Solar Photovoltaic Plants

Chowdhury

Paladhi

Pradhan

2023

IEEE Systems Journal

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“…Recently, a quasi-two-phase tripping strategy was proposed. It is able to determine the fault nature according to the reactive power characteristics before and after the arc quenching of the faulted phase, whereas the introduction of negative sequence components into the system caused by the two-phase operation lowers the operational stability of the system [28].…”

Section: Introductionmentioning

confidence: 99%

An Adaptive Reclosing Scheme for Cross-Line Faults on Double-Circuit Wind Power Outgoing Lines with Shunt Reactors

Hu,

Xie,

Yin

2024

Energies

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Wind turbines are vulnerable to negative sequence current injection, the conventional automatic reclosing scheme for wind power outgoing lines, since we may inject negative sequence components into the system and reclose it without distinguishing the nature of the fault through rectification. Moreover, reclosing in permanent faults could induce a secondary impact on the system. To solve the above problems, an adaptive reclosing scheme for cross-line faults on double-circuit wind power outgoing lines with shunt reactors is proposed. Firstly, a new tripping strategy and a single-side partial-phase reclosing method are proposed for multiple types of outgoing line faults, while, simultaneously, phase-to-phase coupling loops are established. Secondly, the criteria of fault nature are established based on the fault phase shunt reactor current and fault phase voltage characteristics, and transient faults are rapidly and accurately distinguished from permanent ones according to the criteria. Finally, the theoretical derivation and simulation experiments are conducted on the PSCAD/EMTDC platform to demonstrate that the proposed adaptive reclosing method is applicable to avoid the injection of negative sequence currents into wind turbines. Meanwhile, the success rate of reclosing for wind power outgoing line is significantly improved and the continuity of power transmission on the wind farm(s) is ensured.

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“…Meanwhile, the line structure, transmission mode and fault characteristics between the DC power grid and AC power grid are different. Then the adaptive reclosing scheme used in AC grids cannot be applied to DC grids directly [16][17][18][19]. Therefore, research on the rapid FPI method in flexible DC power grid is the premise and key to the adaptive reclosing scheme.…”

Section: Introductionmentioning

confidence: 99%

A coupling voltage based adaptive reclosing scheme for flexible DC grid

Wei

Zou

Zhang

et al. 2022

IET Generation Trans & Dist

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The total electric field around the DC line is composed of both the ion flow field produced by coronae and the electrostatic field produced by the conductor charge. Under the effect of the total electric field, the disconnected pole will generate a coupling voltage. Therefore, based on the coupling voltage, this paper proposes an adaptive reclosing scheme for flexible DC grid to prevent power supply interruption caused by temporary fault. First, the disconnected pole coupling voltage (DPCV) under the total electric field is analysed when single pole to ground fault (SPGF) and pole to pole fault (PPF) occur respectively. Then, according to the DPCV difference between permanent fault and temporary fault, a fault property identification (FPI) criterion is constructed. The scheme is very simple and not affected by the transition resistance, fault position and wiring mode which has high reliability. Compared with the non‐selective reclosing strategy, the adaptive reclosing scheme can avoid the secondary impact on the system from the permanent fault. Extensive simulations and experiments verify the effectiveness of the proposed adaptive reclosing strategy.

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Adaptive Autoreclosing Scheme for Line-to-Line Nongrounded Faults on Double-Circuit Transmission Lines Based on Phase-to-Phase Reactive Power

Cited by 5 publications

References 23 publications

Nonunit Protection of Parallel Lines Connecting Solar Photovoltaic Plants

Nonunit Protection of Parallel Lines Connecting Solar Photovoltaic Plants

An Adaptive Reclosing Scheme for Cross-Line Faults on Double-Circuit Wind Power Outgoing Lines with Shunt Reactors

A coupling voltage based adaptive reclosing scheme for flexible DC grid

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