一种广域差动保护实现方法

发布时间：2018-03-02 06:17

本文关键词： 广域保护差动保护差动环失灵保护　出处：《电工技术学报》2014年02期 　论文类型：期刊论文

【摘要】：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。
[Abstract]:Wide area protection is one of the important development directions of relay protection, in which wide area differential protection is an important branch. In this paper, the whole structure of wide area differential protection based on IEC61850 is proposed, and the basic concept of differential ring is defined. The criterion and realization method of wide area differential protection are proposed. On the basis of this, the concept of dynamic expansion of differential ring is defined. The differential protection is applied to the backup protection of circuit breaker failure by using the extended loop. This scheme effectively solves the problems of the current malfunction protection and the protection quickness when the branch is abnormal. The correctness of the scheme is proved by the real test of the dynamic simulation.
【作者单位】：强电磁工程与新技术国家重点实验室华中科技大学;
【基金】：国家自然科学基金重点项目(51177058)和国家自然科学基金(51277085)资助
【分类号】：TM773.4

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