摘要
以广域电流差动保护为例子来说明广域继电保护的工作情况。说明了广域电流差动保护的结构、动作判据和算法,用IEEE5节点电力系统的实例讨论一种基于图论的广域电流差动保护算法。所阐述的广域电流差动保护的判据与算法原理简单,运算方便,判断结果准确,可以明显提高继电保护系统的性能。
For an example of wide area relaying protection, the wide area current differential protection is studied concretely, including its structure, action criterion, algorithm, N-1 operation statuses etc. The wide area protection algorithm based on graph theory was inspected by IEEE 5 nodes power system. The relaying protection N-I operation statuses were analyzed and the strategy based on wide area information was proposed. The criterion and the algorithm are simple and convenient for fault determination. The fault estimation results are exact. The wide area current differential protection expounded in this text can improve the performance of relaying protection system markedly.
出处
《电力科学与工程》
2009年第9期7-11,共5页
Electric Power Science and Engineering
关键词
广域继电保护
电流差动判据
广域保护算法
wide area relaying protection
current differential protection criterion
wide area protection algorithm
