基于三类混合正态模型的武汉城市电网无功需求统计特性

Characteristic Analysis of Reactive Power of Wuhan Regional Power Grid Based on Three Kinds of Mixed Gaussian Distribution Model

根据SCADA采集的年度无功运行数据首次对武汉城市电网的总体无功下载功率和变电站10kV送往用户侧的无功功率分布特性进行了统计分析,并根据频次图提出了三类混合型的正态分布模型。大量的样本数据和典型变电站抽样分析表明基于混合正态模型的分布函数能够较好地反映武汉城市电网10kV无功需求统计特性。三类混合正态模型表征了不同负荷类型的无功需求特性及影响因素。根据该研究结果总结了武汉电网无功统计分布概况并提出了进一步的研究方向。

According to the reactive power data collected by SCADA,the statistical datas of reactive power of wuhan regional power grid and the distribution of reactive power transfered from station to users is analysed. It is found that there are three kinds of mixed distribution model in the distribution diagram of reactive power data. Each kind of model proposes the factor and characteristic of the reactive power , Finally the further research of reactive power of wuhan regional power grid is presented,