考虑拓扑结构和运行状态的综合能源系统薄弱节点辨识  

Weak Node Identification of Integrated Energy Systems Considering Topological Structure and Operation State

作　　者：胡哲晟 王蕾 孙可 李宏仲 陶淳逸 HU Zhesheng;WANG Lei;SUN Ke;LI Hongzhong;TAO Chunyi(State Grid Zhejiang Economic and Technological Research Institute,Hangzhou 310008,Zhejiang Province,China;State Grid Zhejiang Electric Power Co.,Ltd.,Hangzhou 310007,Zhejiang Province,China;School of Electrical Engineering,Shanghai University of Electric Power,Yangpu District,Shanghai 200090,China)

机构地区：[1]国网浙江省电力有限公司经济技术研究院,浙江省杭州市310008 [2]国网浙江省电力有限公司,浙江省杭州市310007 [3]上海电力大学电气工程学院,上海市杨浦区200090

出　　处：《电网技术》2020年第10期3709-3716,共8页Power System Technology

基　　金：国网浙江省电力公司科技项目(5211JY180016)。

摘　　要：薄弱节点辨识是综合能源系统安全分析的关键环节。首先从拓扑结构角度考虑,引入最大流和M-阶邻居数的概念,综合考虑线路和管道最大传输容量,电、气、热等值阻抗等多重因素,从全局和局部描述了节点"桥接"和"收发"能力;其次从运行状态考虑,依据泰尔熵原理,将异质能源进行分区,根据各区潮流和压力的变化程度和系统的承受裕度,构造了反映潮流和压力冲击均衡度的改进泰尔熵指标。综合考虑拓扑结构和运行状态,并结合气网、热网延迟响应特性,构造了辨识薄弱节点的评价指标。最后以某一典型的综合能源系统为例,验证了所提方法的有效性和合理性。Identification of weak nodes is the key link of integrated energy system security analysis.In this paper,from the perspective of topology structure,the concepts of maximum flow and M-order neighbor number are introduced,and multiple factors such as the maximum transmission capacity of lines and pipelines,the electrical,gas,thermal equivalent impedance,etc.,are considered to describe the"bridging"and"transceiving"capabilities of the nodes from the global and local perspectives.Secondly,considering the running state and according to the Theil’s entropy principle,the heterogeneous energies are classified.The improved Theil entropy indexes are constructed according to the variation degrees of the tidal current and pressure and the tolerance degrees of the system.The evaluation indexes for identifying the weak nodes are further constructed considering the topology structure and the operation state and combining the delayed response characteristics of the gas and heat networks.Finally,a typical integrated energy system is taken as an example to verify the effectiveness and rationality of the proposed method.

关 键 词：综合能源系统 供能可靠性 泰尔熵 最大流 薄弱节点 

分 类 号：TM721[电气工程—电力系统及自动化]