基于复杂网络的城市燃气输配系统失效因素分析

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。

Failure Factor Analysis of Urban Gas Transmission and Distribution System Based on Complex Networks

The theories and methods of complex networks are introduced to analyze the failure factors of urban gas transmission and distribution system(UGTDS).With the main factors influencing the faults of UGTDS as the nodes and their relations as the links,a network is constructed and analyzed.It shows that the nodes degree distribution approximately follows power-law with exponent 1.76.Accessory equipments,user facilities failure and third party destruction are identified to be the key factors causing UGTDS failure,which shows a rather good agreement with real statistic data of gas accidents.This work provides a new approach for determining the key factors of UGTDS failure.