摘要
随着信息通信技术在电力系统中的大量应用,使得电力系统更加依赖于通信系统的稳定运行。当通信节点遭到攻击失效时,通信节点故障在电力—通信网间传播会最终导致电力信息物理系统的大规模连锁故障。因此,建立符合实际的相依网络模型,评估通信网节点的重要性并对关键节点进行保护是保障相依网络可靠运行的关键。首先,对相依网络中的两单侧网络建立考虑电力线路电抗和信息链路已用率的加权网络模型;然后,根据加权网络节点重要度评估方法,对两单侧网络节点的重要度进行评估;最后,考虑相依电力网节点重要度的影响,依据网间耦合关联矩阵建立的网间依赖度,评估相依网络下通信节点的重要性。以IEEE 14节点系统为例构建相依网络并对通信网节点重要度进行评估,结果表明所提评估方法具有可行性,在实际工程中有一定的应用价值。
With the extensive application of information and communication technology in power system,power system relies more heavily on the stable operation of communication system.When a communication node is attacked and fails,the propagation of communication node failures across the power-communication network will eventually lead to a cascading failure of the power information-physical system.Therefore,it is the necessary to to establish practical interdependent networks model,evaluating the importance of the communication network nodes and protecting the key nodes.Firstly,a weighted network model considering the reactance of the power line and the used rate of the information link is established for the unilaterlal networks in the interdependent networks.Then,the importance of two unilateral network nodes is evaluated according to the weighted network node importance evaluation method.Finally,considering the importance of communication nodes,the importance of the inter-network nodes is evaluated based on the inter-network coupling incidence matrix.An IEEE14 bus system is taken as an example to construct a dependent network and evaluate the importance of the communication nodes.The results show that the proposed method r is feasible and can be utilized in practical engineering.
作者
袁闽杰
谢军
林志勇
陈骏星溆
陈圣晟
李超
YUAN Minjie;XIE Jun;LIN Zhiyong;CHEN Junxingxu;CHEN Shengsheng;LI Chao(State Grid Hunan Logistics Center,Changsha 410006,China;State Grid Shaoyang Power Supply Company,Shaoyang 422000,China;State Grid Hunan Electric Power Co.,Ltd.,Economic and Technical Research Institute,Changsha 430103,China;State Grid Hunan Electric Power Co.,Ltd.,Electric Power Research Institute,Changsha 410006;Hunan Xiangdian Research Institute Co.,Ltd.,Changsha 410004,China;Hunan University College of Electrical and Engineering,Changsha 410082,China)
出处
《电力科学与技术学报》
CAS
北大核心
2021年第5期129-136,共8页
Journal of Electric Power Science And Technology
基金
国家自然科学基金(521071147)
国家电网公司科技项目(5216A020005S)。
关键词
相依网络
信息通信网
加权网络
网间依赖度
节点重要度
interdependent network
information communication network
weighted network
inter-network dependence
node importance
