利用GO法进行供水管网可靠度计算

Calculation of water supply system reliability with GO method

供水管网可靠度计算常用的方法为最小割集法,但该方法中节点最小供水路径难以确定,并且不利于通过编程实现节点可靠度的自动求解.相比之下,GO法是一种更好的选择.GO法是一种以成功为导向的系统可靠性分析方法.具有原理清晰、易于建立求解模型,易于编程等优点.在利用GO法进行供水管网可靠度计算的过程中,对于公共信号的处理是GO法计算的关键部分.利用先进行符号计算再进行数值计算的方法,对公共信号进行修正,得到正确的节点可靠度值,进而求得系统可靠度.通过将供水管网中各网络元素抽象为GO法操作符,建立供水管网节点可靠性计算模型,并通过matlab语言进行求解算法程序编制,实现了供水管网可靠度的计算机求解.并通过算例管网对算法进行了验证.

The reliability of water supply system was obtained generally using the Minimum Cut Set method.But it is a hard job to find the minimum cut set for a node in a complex water supply network,and it is also hard to achieve this job by programming.In this situation,the GO method is a preferable choice.GO method is a success oriented method for system reliability calculation and the system reliability value can be calculated by this method directly. Because disposal of the common signals is the difficulty in the process of calculation,symbols was calculated firstly and then symbols was substituted with values,in this paper.By using this method,the common signals were corrected,and the correct reliabilities of nodes and water supply network were obtained.The calculation was realized with matlab program language and the method was tested with a case water supply network in the paper.