贝叶斯网络在数字化变电站信息传输可靠性研究中的应用

在数字化变电站中,变电站信息传输的可靠性影响着变电站自动化和电力系统运行的可靠性。根据采样值信号、跳闸信号和文件数据三类数据信息建立变电站信息传输可靠性模型的贝叶斯网络,分别对星形和环形两种数字化变电站网络结构下的信息传输进行可靠性分析,使用贝叶斯特有的双向推理技术计算可靠性指标和系统失效时三类数据信息传输及元件的失效度,计算结果能够用来确定变电站信息传输的薄弱环节。

Application of Bayesian Networks to the Research of Information Transmission Reliability in Digital Substations

In digital substation, the reliability of substation and power system operation are affected by the reliability of information transmission . Bayesian networks of reliability models for information transmission system is established through three types of data services which are sample value signal transmission and tripping signal transmission and file data. Analyze the reliability of information transmission when the digital substation's network structure are star and ring in this paper, the reliability indices of the information transmission and the unavailability of three types of data information transmission and components when system is unavailable are computed . The results can be used to determine the weakness of substation information transmission.