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一种广域差动保护实现方法

, PP. 297-303

Keywords: 广域保护,差动保护,差动环,失灵保护

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Abstract:

广域保护是继电保护发展的重要方向之一,其中广域差动保护是一个重要的分支。本文提出了基于IEC61850的广域差动保护的整体架构,定义了差动环的基本概念,提出了广域差动保护的判据以及实现方式。在此基础上,明确了差动环动态扩展的概念,利用扩展环将差动保护用于断路器失灵的后备保护。该方案有效地解决了现有的失灵保护容易误动以及支路异常时的保护速动性问题。动模仿真试验证明了所述方案的正确性。

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