中国电机工程学报2025，Vol.45Issue(3)：923-935,中插10,14.DOI:10.13334/j.0258-8013.pcsee.231493
基于动态谐波导纳参数的非侵入式负荷监测数据模拟生成方法
Non-invasive Load Monitoring Data Simulation Generation Method Based on Dynamic Harmonic Admittance Parameters
摘要
Abstract
Non-invasive load monitoring(NILM)technology has great significance in advancing the intelligence of power system management and guiding users towards more rational electricity usage plans.However,the accuracy of its monitoring results is limited by the scale and authenticity of the electrical load datasets.In addition,the existing public datasets lack sufficient sample quantity and variety,and the comprehensiveness and authenticity of self-constructed datasets also need improvement.To address these issues,this paper proposes a method for simulating residential load data applicable to NILM.First,limited original electrical load data obtained from sampling are subjected to standardize preprocessing and fast Fourier transform(FFT)calculations to derive their dynamic harmonic admittance parameters.Then,an admittance transformation method is introduced to process the dynamic admittance parameters,constraining them within the first/fourth quadrant for easier simulation verification.After that,the processed admittance is utilized at various harmonic orders along with source parameters to deduce a mathematical model of electrical load harmonic admittance.Next,a simulation model is established to generate standard current waveforms for this electrical load.Compared with other methods,the proposed approach demonstrates satisfying fitting effects across multiple scenarios,ranging from simple on/off loads to multi-stage continuously varying loads,from microsecond-level periodic currents to hour-long duration processes,and from single-type load simulations to multi-type load usage scenario constructions.It shows significant merits over existing data generation methods in terms of fidelity,comprehensiveness,and scope of application.Finally,random variables following probability distributions are further introduced into the dynamic parameters to simulate the random errors of actual loads,enabling the generation of electrical load interval currents that account for practical errors,and effectively enhancing the scientific validity and richness of the generated data.This can serve as a reliable source of datasets for NILM.关键词
非侵入式负荷监测/数据集/居民负荷数据模拟生成/动态谐波导纳参数/导纳转移/区间电流Key words
non-invasive load monitoring(NILM)/data sets/residential load data generation/dynamic harmonic admittance parameters/admittance transfer/current range分类
信息技术与安全科学引用本文复制引用
王谱宇,丁一帆,陈鉴祥,刘兴江,方凯杰,程含渺,张小平..基于动态谐波导纳参数的非侵入式负荷监测数据模拟生成方法[J].中国电机工程学报,2025,45(3):923-935,中插10,14.基金项目
江苏省自然科学基金(面上项目)(BK20242048) （面上项目）
国防科技重点实验室基金项目(JCJQLB05406). Project Supported by Natural Science Foundation of Jiangsu Province(General Project)(BK20242048) （JCJQLB05406）
Foundation of Key Laboratory of Science and Technology for National Defense(JCJQLB05406). （JCJQLB05406）
