| 引用本文: | 姜盛波,杨军,王建雄,袁文,谢培元,罗超,孙元章.基于预防-紧急协调控制的大电网连锁故障防御策略[J].电力自动化设备,2019,39(12): |
| JIANG Shengbo,YANG Jun,WANG Jianxiong,YUAN Wen,XIE Peiyuan,LUO Chao,SUN Yuanzhang.Defense strategy against large power grid cascading failure based on coordinated preventive-emergency control[J].Electric Power Automation Equipment,2019,39(12): |
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| 摘要: |
| 电网结构和运行方式的复杂性日益增加，源发故障引发大停电事故的概率随之加大。基于过载主导型连锁故障的传播机理和时间特性分析，兼顾调度人员对连锁故障后果的可承受性，建立了基于预防-紧急协调控制的大电网连锁故障防御模型，引入协调因子将控制压力分解到连锁故障发生前/后，以预防控制优化系统的初始运行状态，在考虑发电机可调度潜力的基础上以紧急控制配合必要的切机/切负荷手段，实现对连锁故障蔓延的抑制。IEEE 39节点系统的算例分析结果表明，所提协调控制模型可以充分发挥预防控制和紧急控制的互补特性，兼顾连锁故障后果可承受度约束和经济性要求，对连锁故障进行全过程防御。 |
| 关键词: 大电网 连锁故障 过载主导型连锁故障 预防控制 紧急控制 协调控制 |
| DOI：10.16081/j.epae.201910009 |
| 分类号:TM711 |
| 基金项目:国家自然科学基金资助项目(51277135) |
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| Defense strategy against large power grid cascading failure based on coordinated preventive-emergency control |
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JIANG Shengbo1, YANG Jun1, WANG Jianxiong2, YUAN Wen2, XIE Peiyuan2, LUO Chao1, SUN Yuanzhang1
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1.School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China;2.State Grid Hunan Electric Power Company, Changsha 410000, China
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| Abstract: |
| With the increasing complexity of power grid structure and operation mode, the probability of large-scale blackout caused by source fault increases. Based on the analysis of the propagation mechanism and time characteristics of overload-dominated cascading failure, and taking into account the dispatcher’s acceptability to the cascading failure consequences, a defense strategy against large power grid cascading failure based on coordinated preventive-emergency control is established. The coordination factor is introduced to decompose the control pressure into the periods before and after cascading failures. The initial operation state of the system is optimized by preventive control, and the emergency control is combined with necessary means of generator tripping and load cutting on the basis of considering the dispatch potential of generators, so that the cascading failure spread is suppressed. The analysis results of IEEE 39-bus system demonstrate that the proposed coordinated control model can take full advantage of the complementary characteristics of preventive control and emergency control and take into account the tolerance consequence constraint and economic requirements, so as to defend cascading failures in the whole process. |
| Key words: large power grid cascading failure overload-dominated cascading failure preventive control emergency control coordinated control |
