摘要
地区电网负荷特性易受环境温度影响,导致负荷辨识结果往往存在较大偏差,研究了基于残差卷积神经网络的温度敏感负荷辨识方法,有效提高负荷辨识准确率。首先,利用基准负荷比较法,构建了商业各企业基准日负荷曲线;其次,利用皮尔逊相关系数法,筛选出与温度相关性强的温度敏感负荷,同时采用多项式回归模型进一步分析温度敏感负荷与实时温度变化的规律,量化温度因素的影响程度;最后,针对温度敏感负荷,提出利用负荷与温度的多项式回归模型系数构建动态温度敏感负荷特征库,作为辨识模型的输入。将基于残差卷积神经网络的负荷辨识结果与传统卷积神经网络负荷辨识结果进行对比,前者的辨识准确率有较大提升。
The load characteristics of regional power grids are easily affected by the environmental temperature,which often results in large deviations in the load identification results.The temperature-sensitive load identification method based on residual convolutional neural network is studied to effectively improve the accuracy of load identification.Firstly,the benchmark load compar-ison method is used to construct the benchmark daily load curve of commercial enterprises.Secondly,the Pearson correlation coeffi-cient method is used to screen out temperature-sensitive loads with strong temperature correlation,and a polynomial regression model is used to further analyze the temperature-sensitive load and the law of real-time temperature changes quantifies the degree of influ-ence of temperature factors.Finally,for temperature-sensitive loads,a polynomial regression model coefficient of load and tem-perature is used to construct a dynamic temperature-sensitive load feature library as the input of the identification model.Comparing the load identification results based on the residual convolutional neural network with the traditional convolutional neural network load identification results,the identification accuracy of the former is greatly improved.
作者
傅质馨
温顺洁
朱俊澎
袁越
FU Zhixin;WEN Shunjie;ZHU Junpeng;YUAN Yue(College of Energy and Electrical Engineering,Hohai University,Nanjing 211100,China;Engineering Research Center for Renewable Energy Power Generation Technology,Ministry of Education,Hohai University,Nanjing 210098,China)
出处
《电力需求侧管理》
2021年第5期57-62,共6页
Power Demand Side Management
基金
国家自然科学基金青年科学基金资助项目(51807051)
江苏省自然科学基金青年科学基金资助项目(BK20180507)。
关键词
负荷特性
基准负荷比较法
相关性分析
动态负荷特征库
负荷辨识
load characteristics
benchmark load compari-son
correlation analysis
dynamic load feature library
load identifi-cation
