An Adaptive Overcurrent Protection Scheme for Distribution Networks
An Adaptive Overcurrent Protection Scheme for Distribution Networks
复制标题
DOI：
10.1109/tpwrd.2013.2294879
复制
发表时间：
2015-04
影响因子：
4.4
通讯作者：
F. Coffele;Campbell Booth;A. Dyśko
中科院分区：
文献类型：
--
作者：
F. Coffele;Campbell Booth;A. Dyśko
随着分布式发电（DG）的日益普及，主动网络管理（ANM）的引入以及潜在的孤岛运行模式，配电网正朝着智能电网的愿景发展。这些变化会影响故障电平和故障电流路径，并已被证明会损害过流保护系统的正确操作。本文提出了一种自适应过流保护系统，自动修正的保护设置的所有过流继电器在响应DG，ANM的影响，和孤岛运行。该方案已开发使用市售的保护设备，采用基于IEC 61850的通信，并已被证明和测试使用硬件在环实验室设施。提出了一个系统的比较所提出的自适应方案的性能，旁边的一个传统的过电流计划。这种比较量化了自适应系统提供的错误操作的减少和平均操作时间的减少。
Distribution networks are evolving toward the vision of smart grids, with increasing penetration of distributed generation (DG), introduction of active network management (ANM), and potentially islanded modes of operation. These changes affect fault levels and fault current paths and have been demonstrated to compromise the correct operation of the overcurrent protection system. This paper presents an adaptive overcurrent protection system which automatically amends the protection settings of all overcurrent relays in response to the impact of DG, ANM, and islanding operation. The scheme has been developed using commercially available protection devices, employs IEC61850-based communications, and has been demonstrated and tested using a hardware-in-the-loop laboratory facility. A systematic comparison of the performance of the proposed adaptive scheme alongside that of a conventional overcurrent scheme is presented. This comparison quantifies the decrease in false operations and the reduction of mean operating time that the adaptive system offers.