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将复杂网络相关理论方法引入城市燃气输配系统失效因素的分析中。选取引起城市燃气输配系统失效的主要影响因素为节点,以它们之间的相互关系为边,建立网络并进行相关分析。发现节点的度分布近似具有幂律的特性,幂指数为1.76;通过节点度的分析,确定出管道附属设备、用户设施失效、第三方影响破坏等因素为引起输配系统失效的主要原因,与引起燃气事故的统计分析资料基本相符合。这为确定城市燃气输配系统关键失效因素提供了一种新的思路。
The relevant theories and methods of complex networks are introduced into the analysis of the failure factors of urban gas transmission and distribution system. The main factors affecting the failure of urban gas transmission and distribution system are selected as nodes, and the relationship between them is taken as an example. The network is established and the correlation analysis is carried out. It is found that the degree distribution of nodes is approximately power law, and the power exponent is 1.76. Through the analysis of node degree, it is determined that the main reason for the failure of transmission and distribution system is the factors such as the pipeline auxiliary equipment, user facilities failure and third-party influence destruction, Statistics and analysis of gas accidents caused by the basic match. This provides a new idea for determining the key failure factors of urban gas transmission and distribution system.