中性点电流差动保护的新判据

Proceedings of the 41st International Universities Power Engineering Conference Pub Date : 2006-09-01 DOI:10.1109/UPEC.2006.367504

M. Zhang, Haigang Wang, Xinzhou Dong, Z.Q. Bow, B. Caunce, A. Klimek

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引用次数: 0

摘要

在对现有输电线路中性点电流差动保护方案进行全面研究的基础上，提出了一种新的中性点电流差动保护判据。与传统判据相比，该判据提高了内部故障条件下的灵敏度，提高了外部故障条件下的可靠性。更重要的是，该准则克服了传统准则在单极开条件下灵敏度的不足，具有更令人满意的性能。通过理论分析给出了新准则的适用范围，并通过仿真结果验证了该准则的适用性和有效性

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A Novel Criterion for Neutral Current Differential Protection

A novel criterion for neutral current differential protection is presented in this paper, which is based on a full research into exist neutral current differential protection schemes used in transmission lines. Compared to traditional ones, the novel criterion can improve the sensitivity under internal fault conditions and improve reliability under external fault conditions. More importantly, the novel criterion overcomes the deficiency of sensitivity of traditional criteria under single-pole open condition and possesses more satisfactory performance. The applicable range of the novel criterion is given by theoretic analysis and simulation results are presented to verify the applicability and effectiveness of the proposed criterion

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来源期刊

Proceedings of the 41st International Universities Power Engineering Conference

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