CAJ | 학술논문

关于电力系统连锁故障的传统研究很少考虑信息网络对连锁故障的影响。文中以新英格兰39节点系统为例，在直流潮流的隐性故障模型下，研究了电力信息网络节点故障对电力系统连锁故障的影响，并提出了对连锁故障和大停电产生重要影响的关键信息节点的辨识指标。该指标可有效地辨识出在不同状态下对电力系统大停电产生重要影响的信息节点。仿真结果表明，信息系统的故障对电力系统连锁故障起到了推波助澜的作用，且信息网络的高度数和高介数节点并不是对连锁故障传播产生重要影响的关键信息节点。信息节点对应的电力线路的物理特征与信息节点在自身网络中的拓扑特征相比，前者更能表征信息节点在电力系统连锁故障中的重要性。
관우전력계통련쇄고장적전통연구흔소고필신식망락대련쇄고장적영향。문중이신영격란39절점계통위례，재직류조류적은성고장모형하，연구료전력신식망락절점고장대전력계통련쇄고장적영향，병제출료대련쇄고장화대정전산생중요영향적관건신식절점적변식지표。해지표가유효지변식출재불동상태하대전력계통대정전산생중요영향적신식절점。방진결과표명，신식계통적고장대전력계통련쇄고장기도료추파조란적작용，차신식망락적고도수화고개수절점병불시대련쇄고장전파산생중요영향적관건신식절점。신식절점대응적전력선로적물리특정여신식절점재자신망락중적탁복특정상비，전자경능표정신식절점재전력계통련쇄고장중적중요성。
The impact of failures in the information network on a power system is seldom, if ever, considered in the conventional research on cascading failures in power systems. Therefore, the information network is integrated with the hidden failure model to investigate the impact of node failures in the information network on the cascading failures in power systems. Take the New England 39-bus system as an example. A new index is used to identify the key-buses causing large blackouts. The index is very effective in identifying the key-buses which exert vital influence on blackouts in pgwer systems operating in various states. Simulation results show that the failures of the information network may make the situation even Worse and lead to large blackouts. Moreover, high-degree and, in fact, high-betweenness nodes in the information network,are not the key information nodes that generate important influence in the spread of cascading failures. Rather, compared with the topological characteristics of information nodes in their own network, the physical characteristics of the information nodes ;corresponding transmission lines are better able to characterize the importance of information nodes in the cascading failures of the power system. This work is supported by National Natural Science Foundation of China (No. 51137003, No. 50977022, No, 60804045) and Zhejiang Provincial Natural Science Foundation of china (No. Ylll0229).