CAJ | 학술논문

深入研究电力系统复杂网络特性及连锁故障传播机理对预防大停电事故至关重要。在分析电力网潮流分布机理的基础上，针对经典复杂网络模型不能很好地结合决定网络潮流分布定律的问题，提取蕴含于电网特征参数中的物理信息，根据叠加原理计算得出电网节点间电气距离，基于电气距离提出了网络节点电气耦合连接度的概念。建立基于节点电气耦合连接度的电力系统复杂网络特性辨识模型。与已有复杂电网模型相比，该模型更符合电力系统实际。通过对IEEE标准示例系统的计算，揭示电网内在的异质结构特性，并将该指标应用于电力网关键节点识别。对IEEE 39节点系统和湖南某地区电网进行分析计算，时域仿真结果表明，所提指标比拓扑度指标更为合理有效。
심입연구전력계통복잡망락특성급련쇄고장전파궤리대예방대정전사고지관중요。재분석전력망조류분포궤리적기출상，침대경전복잡망락모형불능흔호지결합결정망락조류분포정률적문제，제취온함우전망특정삼수중적물리신식，근거첩가원리계산득출전망절점간전기거리，기우전기거리제출료망락절점전기우합련접도적개념。건립기우절점전기우합련접도적전력계통복잡망락특성변식모형。여이유복잡전망모형상비，해모형경부합전력계통실제。통과대IEEE표준시례계통적계산，게시전망내재적이질결구특성，병장해지표응용우전력망관건절점식별。대IEEE 39절점계통화호남모지구전망진행분석계산，시역방진결과표명，소제지표비탁복도지표경위합리유효。
It is extremely important to prevent blackouts to understand the mechanism of cascading failure propagation in power networks. The physical laws which govern the flow of power through network were studied. To solve the problem that classical complex network model can not explicitly incorporate the laws governing the flow of electricity within networks, the electrical distance between pairs of nodes was calculated according to superimposed principle based on the information contained in the character of power network. The characteristic identification model of power grid was built with a more comprehensible physical background than the existing model based on the electrical coupling connectivity metric which is defined according to electrical distance between nodes. Case study on IEEE test systems shows the internal heterogeneous structural characteristics of power grids. The electrical coupling connectivity metric was applied to critical nodes identification in power grids. The IEEE 39-bus system and regional power grid of Hunan province were analysed and the time domain simulation shows the presented indicator is more reasonable and effective than the topological degree.