CAJ | 학술논문

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。
엄역보호시계전보호발전적중요방향지일，기중엄역차동보호시일개중요적분지。본문제출료기우 IEC61850적엄역차동보호적정체가구，정의료차동배적기본개념，제출료엄역차동보호적판거이급실현방식。재차기출상，명학료차동배동태확전적개념，이용확전배장차동보호용우단로기실령적후비보호。해방안유효지해결료현유적실령보호용역오동이급지로이상시적보호속동성문제。동모방진시험증명료소술방안적정학성。
The wide-area protection is one of the important directions for the development of relay protection, and wide-area differential protection is an important branch. In this paper, the overall architecture of the wide-area differential protection based on IEC61850 is proposed, the basic concepts of the differential ring is defined, and action criterion and method of the wide-area differential protection is proposed. The blocking conditions of the wide-area differential protection are described, and the dynamic extension of differential ring in case of a branch failure is analyzed. The wide-area differential protection based on the differential ring is effective solution to the existing failure protection easy to malfunction and the dead zone fault. Dynamic simulation system verifies the feasibility and correctness of the proposed method.