裴宇婷,秦 超,余贻鑫
AuthorsHTML:裴宇婷,秦 超,余贻鑫
AuthorsListE:Pei Yuting,Qin Chao,Yu Yixin
AuthorsHTMLE:Pei Yuting,Qin Chao,Yu Yixin
Unit:天津大学智能电网教育部重点实验室,天津 300072
Unit_EngLish:Key Laboratory of Smart Grid of Ministry of Education,Tianjin University,Tianjin 300072,China
Abstract_Chinese:为提高电网的安全运行水平和经济性,灵活的可重构的网络拓扑结构是未来智能配电网的基本特征.而配电管理系统(DMS)中的大部分功能,如状态估计,潮流计算和电压控制等,都基于网络当前的拓扑结构.因此,拓扑辨识是DMS的基础功能之一,研究更为高效和准确的智能配电网拓扑辨识方法具有重要意义.结合配电网的结构和运行特点,建立了基于机器学习的智能配电网拓扑辨识框架,并提出了基于LightGBM和深度神经网络(DNN)的配电网在线拓扑辨识方法.该方法借助LightGBM实现特征选择,筛选出对配电网拓扑辨识最有效的少量量测,以深度神经网络实现配电网运行断面量测数据与其拓扑结构间的映射.考虑实际应用中可能存在量测数据丢失的情况,提出了基于最小方差的缺失值填补方法.同样利用样本间的最小方差进行未知拓扑的甄别,并借助增量学习机制,通过增量训练DNN模型实现拓扑知识库的更新.与现有方法相比,本文提出的拓扑辨识方法仅需要配电网中少量节点的运行断面量测数据,同时适用于辐射状和弱环网结构,计算效率可支持在线拓扑辨识.通过IEEE 33节点配电网和PG&E 69节点配电网验证了所提方法的有效性与优越性,并分析了对于不同噪声水平情况、量测特征值缺失和存在未知拓扑的适应性.
Abstract_English:To improve the security and economy of the power grid,future smart distribution grids should have a flexible topology reconfiguration as a fundamental characteristic. Most functions of the distribution management system (DMS),such as state estimation,power flow calculation,and voltage control,require the current topology of the grids. Therefore,topology identification is a key function of the DMS. Exploiting more accurate and efficient topology identification approaches is thus of great significance. Considering the topologies and operational characteristics of distribution grids,a topology identification framework of smart distribution grids under a machine learning scheme was developed in this study. An online topology identification method based on LightGBM and deep neural networks(DNNs)was also presented. A feature selection algorithm based on LightGBM was adopted to select the most effective measurements for topology identification task,and DNNs were built to model the mapping relationship between measurement data snapshots and topologies. Considering the possibility of missing measurement data in practice,an imputation method based on the minimum variance was proposed. The minimum variance was also used to identify unknown topologies that are not included in the training set. An incremental learning mechanism was then added to adjust the DNN and update the knowledge base of topologies. Compared with existing methods,the proposed method simply requires a small portion of nodal measurement snapshots;and is able to identify radial and mesh networks. Its computational efficiency meets the requirement of online applications. Finally,the proposed method was validated through IEEE 33-node and PG&E 69-node distribution grids using simulation data. The sensitivity to different noise levels,missing data,and unknown topologies was further analyzed.
Keyword_Chinese:智能配电网;拓扑辨识;机器学习;LightGBM;深度神经网络
Keywords_English:smart distribution grids;topology identification;machine learning;LightGBM;deep neural networks
PDF全文下载地址:http://xbzrb.tju.edu.cn/#/digest?ArticleID=6514
删除或更新信息,请邮件至freekaoyan#163.com(#换成@)
基于LightGBM 和DNN 的智能配电网在线拓扑辨识
本站小编 Free考研考试/2022-01-16
相关话题/智能 拓扑
智能配电网态势感知实现效果综合评估模型
葛磊蛟1,李元良1,汪宇倩2AuthorsHTML:葛磊蛟1,李元良1,汪宇倩2AuthorsListE:GeLeijiao1,LiYuanliang1,WangYuqian2AuthorsHTMLE:GeLeijiao1,LiYuanliang1,WangYuqian2Unit:1.天津大学智能电 ...天津大学科研学术 本站小编 Free考研考试 2022-01-16基于改进水平集的菌落图像智能计数算法\t\t
张力新,张黎明,杜培培,余辉AuthorsHTML:张力新,张黎明,杜培培,余辉AuthorsListE:ZhangLixin,ZhangLiming,DuPeipei,YuHuiAuthorsHTMLE:ZhangLixin,ZhangLiming,DuPe ...天津大学科研学术 本站小编 Free考研考试 2022-01-16基于FPGA的粗粒度可重构系统拓扑网络结构开发
庞科1,史再峰2,周佳慧2,陈可鑫2AuthorsHTML:庞科1,史再峰2,周佳慧2,陈可鑫2AuthorsListE:PangKe1,ShiZaifeng2,ZhouJiahui2,ChenKexin2AuthorsHTMLE:PangKe1,ShiZaifeng2,ZhouJiahui2,Ch ...天津大学科研学术 本站小编 Free考研考试 2022-01-16基于Pareto遗传算法和TRIZ理论的数控装备加工参数智能优化
刘恒丽1,2,董靖川1,于治强1AuthorsHTML:刘恒丽1,2,董靖川1,于治强1AuthorsListE:LiuHengli1,2,DongJingchuan1,YuZhiqiang1AuthorsHTMLE:LiuHengli1,2,DongJingchuan1,YuZhiqiang1Un ...天津大学科研学术 本站小编 Free考研考试 2022-01-16轴/径向伸缩式成型鼓的拓扑分析与结构创新
汪菲,刘贺宇,王建勇,邬全兵,杨玉虎AuthorsHTML:汪菲,刘贺宇,王建勇,邬全兵,杨玉虎AuthorsListE:WangFei,LiuHeyu,WangJianyong,WuQuanbing,YangYuhuAuthorsHTMLE:WangFei,LiuHeyu,WangJianyong ...天津大学科研学术 本站小编 Free考研考试 2022-01-16畜禽养殖疾病诊断智能传感技术研究进展
李奇峰,,李嘉位,,马为红,,高荣华,余礼根,丁露雨,于沁杨北京农业信息技术研究中心,北京100097ResearchProgressofIntelligentSensingTechnologyforDiagnosisofLivestockandPoultryDiseasesLIQiFeng,,LI ...中国农业科学院科研学术 本站小编 Free考研考试 2021-12-26智能手机原位牧草生物量估算
陶海玉,,张爱武,,庞海洋,康孝岩首都师范大学地理环境研究与教育中心/首都师范大学三维信息获取与应用教育部重点实验室,北京100048Smart-PhoneApplicationinSituGrasslandBiomassEstimationTAOHaiYu,,ZHANGAiWu,,PANGHaiY ...中国农业科学院科研学术 本站小编 Free考研考试 2021-12-26面向移动终端的农业害虫图像智能识别系统的研究与开发
邵泽中,1,姚青,1,唐健,2,李罕琼3,杨保军2,吕军1,陈轶41浙江理工大学信息学院,杭州3100182中国水稻研究所/水稻生物学国家重点实验室,杭州3100063嘉善县农业农村局,浙江嘉兴3141004桐乡市农业技术推广服务中心,浙江桐乡314500ResearchandDevelopment ...中国农业科学院科研学术 本站小编 Free考研考试 2021-12-26智能工厂中的雾计算资源调度
戴志明1,2,3,周明拓1,2,3,杨旸3,4,李剑1,3,刘军51.中国科学院上海微系统与信息技术研究所,上海200050;2.中国科学院大学,北京100049;3.上海雾计算实验室,上海201210;4.上海科技大学,上海201210;5.思科(中国)有限公司上海分公司,上海2011032019 ...中国科学院大学科研学术 本站小编 Free考研考试 2021-12-25疲劳统计学智能化中的高镇同法*
《疲劳应用统计学》[1]是高镇同先生在30多年前写的一本书,将统计学正式引入了解决各种疲劳问题的工程实践之中,建立了疲劳统计学这一学科[2]。疲劳统计学是疲劳可靠性的理论基础,对于解决各类可靠性问题,特别是航空工业领域,其意义无论怎样强调都不为过。在疲劳统计学中,有一个非常独特而重要的统计分布就是威 ...北京航空航天大学论文文献 本站小编 Free考研考试 2021-12-25