光纤电力通信系统故障诊断方法及应用实践

Fault Diagnosis of Power Optical Communication System and Its Application Practice

在综合分析、比较了最新发展的光纤通信网络的4种故障诊断方法的计算复杂度、平均检测次数,结合江西省电力通信网络的具体情况的基础上,提出了一套故障诊断的改进方案。该方案将该电力通信网络简化为一个有向图,并考虑电力通信网络的单故障边失效和单故障节点失效两种情形。基于该电力通信的网络拓扑分析、权衡故障诊断时间及故障诊断精确度表明,边概率失效的故障诊断方法适用于单故障边失效情形,而对于单故障节点失效情形,基于图论的系统模型、网络模型以及改进的反向检测模型的性能相当。该方案将对提高江西省电力通信网络系统的诊断效率以及可靠性具有借鉴和参考作用。

Based on the comprehensive comparison and analysis of the computational complexity and average test number of the 4 fault diagnosis techniques newly developed for power optical communication network, an improved scheme for fault diagnosis was put forth by combining the actual situation of power optical communication network of Jiangxi Province. The scheme simplified the network to a directed graph with the Edge Failure （EF） and Node Failure （NF） of single fault being considered. Topology analysis of the power communication network and tradeoff analysis between diagnosis time and diagnosis accuracy indicated that Probabilistic Edge-Failure Model was suitable for EF; while for NF, the performance of Graph- Based System Model, Network Model and Back-Detect method was similar. This scheme could greatly improve the efficiency and reliability of fault diagnosis of the power communication network system of Jiangxi Province.