中文摘要：

单-三相组合式同相供电技术作为牵引供电领域的新技术,对其进行可靠性评估是非常必要的.GO法是一种以成功为导向的可靠性评估方法,本文运用GO法基本原理,根据单-三相组合式同相供电变电所一种典型的主接线建立GO图,编写GO法计算程序,对其进行定量分析和定性分析,从而得出单-三相组合式同相供电变电所可靠性参数及其薄弱环节,进而提出了一些提高变电所可靠性的措施.

英文摘要：

For the single phase/three phase combined co-phase supply system, a new technology in the field of traction power supply, it is necessary to perform the reliability evaluation. GO methodology is a reliable success-oriented assessing method, and the basic principle of the GO methodology is applied in this paper, and the computation program of GO methodology is written by establishment of GO diagram according to a typical main wiring for single phase/three phase combined co-phase power supply system of traction substation, on the basis of its quantitative analysis and qualitative analysis, the reliable parameters and weak points of the single phase/three phase combined substation are obtained, and measures for improving the reliability of substation are proposed.