1.广西电力系统最优化与节能技术重点实验室(广西大学),广西 南宁 530004
2.上海交通大学 电力传输与功率变换控制教育部重点实验室,上海 200240
3.贵州电网有限责任公司铜仁供电局,贵州 铜仁 554300
苏子扬(1999 —),男,硕士研究生,主要研究方向为电力系统连锁故障(E-mail:1722175187@qq.com);
李长城(1989 —),男,助理教授,博士,通信作者,主要研究方向为电力系统保护与控制、韧性(恢复)(E-mail:lichangcheng@gxu.edu.cn);
康海鹏(1997 —),男,博士研究生,主要研究方向为电力系统连锁故障(E-mail:khpzal@163.com)。
收稿:2025-01-02,
修回:2025-04-30,
网络首发:2025-09-28,
纸质出版:2026-03-10
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苏子扬,李长城,康海鹏等.计及区域协调特性的互联电网连锁故障多阶段阻断模型[J].电力自动化设备,2026,46(03):186-195.
SU Ziyang,LI Changcheng,KANG Haipeng,et al.Multi-stage blocking model of interconnect power grid cascading failures considering regional coordination characteristics[J].Electric Power Automation Equipment,2026,46(03):186-195.
苏子扬,李长城,康海鹏等.计及区域协调特性的互联电网连锁故障多阶段阻断模型[J].电力自动化设备,2026,46(03):186-195. DOI: 10.16081/j.epae.202509016.
SU Ziyang,LI Changcheng,KANG Haipeng,et al.Multi-stage blocking model of interconnect power grid cascading failures considering regional coordination characteristics[J].Electric Power Automation Equipment,2026,46(03):186-195. DOI: 10.16081/j.epae.202509016.
现有连锁故障阻断策略未考虑联络线跨区域调度能力,造成经济成本和安全风险高。为此,提出一种发挥交流互联电网区域协调特性的连锁故障阻断模型。基于交流联络线的运行约束和互联电网协同调度框架,构建了故障态多区域协调控制策略(RCCS)。结合互联电网调度特性和线路停运概率模型,建立互联电网连锁故障演化模型。考虑故障路径控制约束,基于RCCS构建互联电网连锁故障多阶段协同阻断模型。以2个改进的IEEE 39节点系统构建的互联电网为算例模拟仿真连锁故障事故链,并运用所提模型实行互联电网连锁故障多阶段阻断,验证了所提阻断模型的有效性。结果表明,所提基于RCCS的阻断模型能减少切负荷量和增加调度部门容错率,以区域互联的优势弥补互联电网易受连锁故障影响的劣势,提高连锁故障阻断控制的安全性和经济性。
The existing cascading failure blocking strategies do not consider the tie-line cross-regional dispatch capability,resulting in high economic costs and security risks. For this reason,a cascading failure blocking model is proposed to take advantage of the regional coordination characteristics of AC interconnected grids. Based on the AC tie-line operational constraints and the cooperative scheduling framework of the interconnect grid,a fault state regional coordination control strategy(RCCS) is constructed. Combining scheduling characteristics of interconnect power grid and line outage probability model,the cascading failure evolution model of interconnection power grid is established. Based on the RCCS,a multi-stage blocking model of cascading failure is constructed by considering the fault path control constraints in interconnect power grid. Two modified IEEE 39-bus systems are used to construct the interconnected power grid as a simulation example to simulate the cascading failure incident chain,and the proposed blocking model is used to implement the multi-stage blocking,and then set up a comparison example for blocking model analysis. The results show that the proposed blocking model can effectively block the interconnected grid cascading failures,and the blocking model considering the RCCS can reduce the amount of load shedding and increase the fault tolerance rate of the dispatch department,make up for the disadvantage of the interconnected power grids being susceptible to the cascading failures with the advantage of regional interconnection,and improve the security and economy of cascading failure blocking control.
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