基于云计算的光伏电站故障诊断系统研究

Research on Fault Diagnosis System of Photovoltaic Power Plant Based on Cloud Calculation

为了提高光伏电站发电效率,减少人工维护成本,实现区域内光伏电站的统一管理和调度,提出了基于云计算技术的光伏故障诊断系统。分析光伏系统故障特征,搭建基于MapReduce数据处理机制的云光伏故障诊断系统构架和诊断模型,建立了一种新的故障排查机制。研究阵列支路故障点定位方法,将光伏组串等效为具有阻抗不连续点的传输线,结合时域反射法研究故障点定位策略。最后,结合状态检修提出云光伏故障监测辅助决策系统,并阐述其结构和分析策略。

In order to improve generating efficiency of photovoltaic power plant, reduce artificial maintenance costs and real- ize unified management and dispatching on photovoltaic power plant in the region, a kind of photovoltaic fault diagnosis sys- tem based on cloud calculation technology was proposed. Fault characteristic of the photovoltaic system was analyzed, framework and diagnosis model for cloud photovoltaic fault diagnosis system based on MapReduce data processing mechanism was established and a new kind of fault elimination mechanism was built. Positioning method for fault points on array branches was studied, photovoltaic string was made equivalent to transmission lines with impedance discontinuity points and positioning strategy for fault points was studied by combining time-domain reflection method. Combining state overhaul, aid decision-making system for cloud photovoltaic fault monitoring was proposed of which structures and analysis strategies were stated.