摘要
针对网格化配电网中故障孤岛长时间尺度运行问题,提出了一种考虑动态孤岛的网格化配电网故障恢复策略。首先,提出了基于分布式电源(DG)的时变特性和广度优先搜索算法的孤岛划分策略;其次,利用孤岛可持续带载能力系数指标设计了相应的孤岛动态优化策略;然后,建立了网格内故障重构和网格间支援模型;最后,在配电网信息物理系统(CPS)109节点算例上,对故障恢复策略的有效性进行了验证。算例结果表明,该策略在恢复重要负荷、降低网络损耗、减小节点电压偏移等方面具有明显优势。
A grid-based distribution network fault recovery strategy considering dynamic islanding is proposed to address the long-term operation problem of fault islands in grid based distribution networks.Firstly,an islanding strategy based on the time-varying characteristics of distributed generation(DG)and breadth first search is proposed.Secondly,the sustainable carrying capacity coefficient index is proposed,a corresponding islanding dynamic optimization strategy is designed for isolated islands.Then,the intra grid fault reconstruction and inter grid support models are established.Finally,the effectiveness of the fault recovery strategy is verified on a 109 node example of the cyber physical system(CPS)in the distribution network.The case study results show that the strategy has significant advantages in restoring important loads,reducing network losses,and reducing node voltage offsets.
作者
朱谢琰
刘东
ZHU Xieyan;LIU Dong(Shanghai University of Electric Power,Shanghai 200090,China;Key Laboratory of Control of Power Transmission and Conversion,Ministry of Education(Shanghai Jiao Tong University),Shanghai 200240,China)
出处
《上海电力大学学报》
CAS
2024年第6期510-519,共10页
Journal of Shanghai University of Electric Power
基金
国家自然科学基金(U2166210)。
关键词
网格化配电网
孤岛划分
孤岛动态优化
故障重构
网格间支援
grid-based distribution network
islanding division
islanding dynamic optimization
fault reconstruction
grid support
作者简介
通信作者:朱谢琰(1998-),男,在读硕士。主要研究方向为电力系统故障自愈。E-mail:victorjimmy@163.com。
