基于EV参数随机性的改进LHS概率谐波潮流算法  

Improved LHS probabilistic harmonic current algorithm based on EV parameter stochasticity

作　　者：倪俊贤 史明明 姜锋 杜嘉诚 唐语心 NI Junxian;SHI Mingming;JIANG Feng;DU Jiacheng;TANG Yuxin(School of Electric Power Engineering,Nanjing Institute of Technology,Nanjing 211167,China;Electric Power Research Institute of State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing 211103,China)

机构地区：[1]南京工程学院电力工程学院,江苏南京211167 [2]国网江苏省电力有限公司电力科学研究院,江苏南京211103

出　　处：《电子设计工程》2025年第2期139-144,共6页Electronic Design Engineering

基　　金：南京工程学院高层次引进人才科研启动基金(YKJ202046)。

摘　　要：随着国家低碳、节能减排政策的持续推动,电动汽车由于具有节能环保的特点,近年来受到政策的大力支持发展迅速,电力系统的谐波问题也随之变得更加突出。针对此问题,提出了一种改进拉丁超立方采样与最大熵相结合的电力系统谐波潮流计算方法。通过对实测数据的分析,考虑其时变特性,更加准确地描述各次谐波之间的耦合关系;构建了输入随机变量之间的相关系数矩阵,并采用了一种基于Nataf变换的拉丁超立方采样方法对概率潮流进行计算,进而基于最大熵分布求取输出变量的概率分布。通过仿真分析,在不同场景下与传统算法进行比较,验证了所提算法的计算精度与概率密度函数拟合效果。With the continuous promotion of national low⁃carbon,energy⁃saving and emission reduction policies,electric vehicles,due to their energy⁃saving and environmentally friendly characteristics,have been supported by the policy to develop rapidly in recent years,and the harmonic problems of the power system have become more prominent.To address this problem,an improved power system harmonic current calculation method combining Latin hypercubic sampling and maximum entropy is proposed.By analysing the measured data,the time⁃varying characteristics are taken into account to more accurately describe the coupling relationship between the harmonics;The correlation coefficient matrix between the input random variables is constructed and a Latin hypercubic sampling method based on the Nataf transform is used to calculate the probabilistic tidal current.The probability distributions of the output variables are obtained based on the maximum entropy distribution.The computational accuracy and probability density function fitting effect of the proposed algorithm are verified through simulation analysis and comparison with traditional algorithms in different scenarios.

关 键 词：概率潮流 非线性负荷 拉丁超立方采样 最大熵 充电站 谐波分析 

分 类 号：TN711.4[电子电信—电路与系统]