使用定向过流继电器设置组考虑 N-1 应急情况的自适应保护算法

IF 1.6 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Journal of Electrical Engineering & Technology Pub Date : 2024-06-27 DOI:10.1007/s42835-024-01962-0
Jin-Sol Song, Chul-Hwan Kim
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引用次数: 0

摘要

传统的电力系统由具有固定设定值的定向过流继电器提供故障保护。但是,如果电力线路跳闸或分布式发电因故障或维护而断开,就会改变电力系统的拓扑结构。因此,故障电流的大小也会发生变化,从而可能导致保护协调系统崩溃。使用固定的设定值来保护电力系统是相当困难的。因此,本文提出了一种利用数字继电保护装置整定组(SG)的自适应保护算法。数字式继电保护装置可包含的 SG 数量有限,且少于电力系统可能的拓扑结构数量。所提出的算法不仅能优化每个继电保护装置的整定值,还能优化与每个拓扑结构相对应的 SG 组合。这拓宽了优化算法的搜索范围,有助于有效缩短继电保护装置的运行时间。该保护算法利用改进的 IEEE 30 总线测试系统进行了验证。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Adaptive Protection Algorithm Considering N-1 Contingency Situation Using Setting Groups of Directional Overcurrent Relays

Conventional power systems are protected from faults by directional overcurrent relays with fixed setting values. However, if a power line trips or if distributed generation is disconnected due to a fault or maintenance, it alters the topology of the power system. Consequently, the magnitude of the fault current also shifts, potentially causing a breakdown in the protection coordination system. It is considerably difficult to protect the power system using fixed setting values. Therefore, this paper proposes an adaptive protection algorithm using the setting groups (SGs) of a numerical protection relay. The number of SGs that a numerical protection relay can contain is limited and less than the number of possible topologies of the power system. The proposed algorithm optimizes not only the setting values of each protective relay but also the combinations of SGs corresponding to each topology. This broadens the searching area for the optimization algorithm, aiding in effectively reducing the operation time of protective relays. The protection algorithm is verified using a modified IEEE 30 bus test system.

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来源期刊
Journal of Electrical Engineering & Technology
Journal of Electrical Engineering & Technology ENGINEERING, ELECTRICAL & ELECTRONIC-
CiteScore
4.00
自引率
15.80%
发文量
321
审稿时长
3.8 months
期刊介绍: ournal of Electrical Engineering and Technology (JEET), which is the official publication of the Korean Institute of Electrical Engineers (KIEE) being published bimonthly, released the first issue in March 2006.The journal is open to submission from scholars and experts in the wide areas of electrical engineering technologies. The scope of the journal includes all issues in the field of Electrical Engineering and Technology. Included are techniques for electrical power engineering, electrical machinery and energy conversion systems, electrophysics and applications, information and controls.
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