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Article(id=1321482039988171687, tenantId=1146029695717560320, journalId=1146031654075715584, issueId=1321481963769287353, articleNumber=null, orderNo=null, doi=10.13234/j.issn.2095-2805.2025.3.36, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1729440000000, receivedDateStr=2024-10-21, revisedDate=1732204800000, revisedDateStr=2024-11-22, acceptedDate=1733328000000, acceptedDateStr=2024-12-05, onlineDate=1792995470281, onlineDateStr=2026-10-26, pubDate=1748534400000, pubDateStr=2025-05-30, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792995470281, onlineIssueDateStr=2026-10-26, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792995470281, creator=13701087609, updateTime=1792995470281, updator=13701087609, issue=Issue{id=1321481963769287353, tenantId=1146029695717560320, journalId=1146031654075715584, year='2025', volume='23', issue='3', pageStart='1', pageEnd='372', issueExtLink='null', onlineDate='null', pubDate='1748534400000', pubDateStr='2025-05-30', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1792995452109, creator='13701087609', updateTime=1792995578032, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1321482491983147168, tenantId=1146029695717560320, journalId=1146031654075715584, issueId=1321481963769287353, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1321482491983147169, tenantId=1146029695717560320, journalId=1146031654075715584, issueId=1321481963769287353, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=36, endPage=46, ext={EN=ArticleExt(id=1321482040193692584, articleId=1321482039988171687, tenantId=1146029695717560320, journalId=1146031654075715584, language=EN, title=Utility Harmonic Impedance Estimation Method Considering Time-varying Characteristics of Background Harmonics, columnId=1321481964440375995, journalTitle=Journal of Power Supply, columnName=Special Issue on Analysis and Control of Power Quality in New Power Systems, runingTitle=null, highlight=null, articleAbstract=

An accurate estimation of utility harmonic impedance is the key to harmonic source determination. Most of the existing methods are based on the premise that the background harmonics keep constant or fluctuate smoothly. However, the background harmonic voltage or utility harmonic impedance generally exhibits unsmooth fluctuation patterns in the novel power system, and there are even abrupt changes in some time sections, which leads to large calculation errors in the existing methods. To solve this problem, an estimation method for utility harmonic impedance considering the time-varying characteristics of background harmonics is proposed. First, this method identifies multiple abrupt change points of background harmonics by means of the binary sliding T maximum, and the measured harmonic data at a point of common coupling (PCC) is divided into several intervals of continuous unsmooth fluctuation accordingly. Then, with the consideration of the small variation of background harmonics between adjacent sampling points, utility harmonic impedance estimation is carried out based on the principle of comprehensive minimum fluctuation within each data interval, and the matrix sparse technique is introduced to reduce the computational time complexity. Finally, simulations and field data are adopted to conduct a comparative analysis, and results indicate that compared with the existing methods, the proposed method can more accurately estimate the utility harmonic impedance and demonstrate a higher computational efficiency.

, authors=Xiaoming WANG1, Hao ZHENG2, Wenguang ZHAO1, Yi WEN3, Mingxing ZHU3, Tong DING3, authorsList=Xiaoming WANG, Hao ZHENG, Wenguang ZHAO, Yi WEN, Mingxing ZHU, Tong DING, authorCompany=null, correspAuthors=Tong DING, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1321482042185986987, articleId=1321482039988171687, tenantId=1146029695717560320, journalId=1146031654075715584, language=CN, title=计及背景谐波时变特征的系统谐波阻抗估计方法, columnId=1149829646675607555, journalTitle=电源学报, columnName=新型电力系统电能质量分析与控制专辑, runingTitle=null, highlight=null, articleAbstract=

准确估计系统谐波阻抗是开展谐波溯源的关键。现有方法大多基于背景谐波保持不变或平滑波动的前提，但在新型电力系统中，背景谐波电压或系统谐波阻抗通常呈现非平滑波动特征，甚至在某些时间断面发生突变，导致现有方法产生较大的计算误差。针对此，提出1种计及背景谐波时变特征的系统谐波阻抗估计方法。首先，利用二分滑动T极大值，辨识出背景谐波的多个突变点，据此将公共连接点PCC（point of common coupling）处谐波监测数据划分为若干连续非平滑波动的区间；然后，在每个数据区间内，考虑相邻采样点背景谐波波动较小的特征，基于综合最小波动量原理开展系统谐波阻抗估计，并引入矩阵稀疏技术降低计算时间复杂度；最后，利用仿真和实际工程案例数据开展对比分析，结果表明，所提方法相比现有方法可以更加准确地估计系统谐波阻抗，且具有更高的计算效率。

, authors=王小明1, 郑浩2, 赵文广1, 文一3, 朱明星中国电源学会高级会员3, 丁同3, authorsList=王小明, 郑浩, 赵文广, 文一, 朱明星中国电源学会高级会员, 丁同, authorCompany=null, correspAuthors=丁同, authorNote=

王小明（1987—　），男，硕士，高级工程师。研究方向：电力系统电能质量。E-mail：。

郑浩（1976—　），男，硕士，正高级工程师。研究方向：电网设备运检管理。E-mail：。

赵文广（1993—　），男，博士，高级工程师。研究方向：电力系统电能质量。E-mail：。

文一（1999—　），男，硕士。研究方向：电力系统谐波溯源。E-mail：。

朱明星（1968—　），男，中国电源学会高级会员，硕士，教授。研究方向：电能质量分析与控制。E-mail：。

, correspAuthorsNote=
丁同（1994—　），男，通信作者，博士，讲师。研究方向：电能质量分析与控制。E-mail：。
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王小明（1987—　），男，硕士，高级工程师。研究方向：电力系统电能质量。E-mail：。

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王小明（1987—　），男，硕士，高级工程师。研究方向：电力系统电能质量。E-mail：。

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郑浩（1976—　），男，硕士，正高级工程师。研究方向：电网设备运检管理。E-mail：。

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郑浩（1976—　），男，硕士，正高级工程师。研究方向：电网设备运检管理。E-mail：。

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赵文广（1993—　），男，博士，高级工程师。研究方向：电力系统电能质量。E-mail：。

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赵文广（1993—　），男，博士，高级工程师。研究方向：电力系统电能质量。E-mail：。

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文一（1999—　），男，硕士。研究方向：电力系统谐波溯源。E-mail：。

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文一（1999—　），男，硕士。研究方向：电力系统谐波溯源。E-mail：。

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朱明星（1968—　），男，中国电源学会高级会员，硕士，教授。研究方向：电能质量分析与控制。E-mail：。

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朱明星（1968—　），男，中国电源学会高级会员，硕士，教授。研究方向：电能质量分析与控制。E-mail：。

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计及背景谐波时变特征的系统谐波阻抗估计方法
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王小明 1 , 郑浩 2 , 赵文广 1 , 文一 3 , 朱明星中国电源学会高级会员 3 , 丁同 3
电源学报 | 新型电力系统电能质量分析与控制专辑 2025,23(3): 36-46
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电源学报 |新型电力系统电能质量分析与控制专辑 2025 , 23 (3) : 36 -46
计及背景谐波时变特征的系统谐波阻抗估计方法
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王小明（1987—　），男，硕士，高级工程师。研究方向：电力系统电能质量。E-mail：。

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王小明1 , 郑浩2 , 赵文广1 , 文一3 , 朱明星中国电源学会高级会员3 , 丁同3
作者信息
  • 1.国网安徽省电力有限公司电力科学研究院，合肥　230601
  • 2.国网安徽省电力有限公司，合肥　230022
  • 3.安徽大学电气工程与自动化学院，合肥　230601
通讯作者:
丁同（1994—　），男，通信作者，博士，讲师。研究方向：电能质量分析与控制。E-mail：。
作者简介:

王小明（1987—　），男，硕士，高级工程师。研究方向：电力系统电能质量。E-mail：。

郑浩（1976—　），男，硕士，正高级工程师。研究方向：电网设备运检管理。E-mail：。

赵文广（1993—　），男，博士，高级工程师。研究方向：电力系统电能质量。E-mail：。

文一（1999—　），男，硕士。研究方向：电力系统谐波溯源。E-mail：。

朱明星（1968—　），男，中国电源学会高级会员，硕士，教授。研究方向：电能质量分析与控制。E-mail：。

Utility Harmonic Impedance Estimation Method Considering Time-varying Characteristics of Background Harmonics
Xiaoming WANG1 , Hao ZHENG2 , Wenguang ZHAO1 , Yi WEN3 , Mingxing ZHU Senior Member, CPSS3 , Tong DING3
Affiliations
  • 1.Electric Power Research Institute, State Grid Anhui Electric Power Co., Ltd., Hefei 230601, China
  • 2.State Grid Anhui Electric Power Co., Ltd., Hefei 230022, China
  • 3.School of Electrical Engineering and Automation, Anhui University, Hefei 230601, China
出版时间: 2025-05-30 doi: 10.13234/j.issn.2095-2805.2025.3.36
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准确估计系统谐波阻抗是开展谐波溯源的关键。现有方法大多基于背景谐波保持不变或平滑波动的前提，但在新型电力系统中，背景谐波电压或系统谐波阻抗通常呈现非平滑波动特征，甚至在某些时间断面发生突变，导致现有方法产生较大的计算误差。针对此，提出1种计及背景谐波时变特征的系统谐波阻抗估计方法。首先，利用二分滑动T极大值，辨识出背景谐波的多个突变点，据此将公共连接点PCC（point of common coupling）处谐波监测数据划分为若干连续非平滑波动的区间；然后，在每个数据区间内，考虑相邻采样点背景谐波波动较小的特征，基于综合最小波动量原理开展系统谐波阻抗估计，并引入矩阵稀疏技术降低计算时间复杂度；最后，利用仿真和实际工程案例数据开展对比分析，结果表明，所提方法相比现有方法可以更加准确地估计系统谐波阻抗，且具有更高的计算效率。

系统谐波阻抗  /  背景谐波突变  /  连续非平滑波动  /  二分滑动T极大值  /  综合最小波动量

An accurate estimation of utility harmonic impedance is the key to harmonic source determination. Most of the existing methods are based on the premise that the background harmonics keep constant or fluctuate smoothly. However, the background harmonic voltage or utility harmonic impedance generally exhibits unsmooth fluctuation patterns in the novel power system, and there are even abrupt changes in some time sections, which leads to large calculation errors in the existing methods. To solve this problem, an estimation method for utility harmonic impedance considering the time-varying characteristics of background harmonics is proposed. First, this method identifies multiple abrupt change points of background harmonics by means of the binary sliding T maximum, and the measured harmonic data at a point of common coupling (PCC) is divided into several intervals of continuous unsmooth fluctuation accordingly. Then, with the consideration of the small variation of background harmonics between adjacent sampling points, utility harmonic impedance estimation is carried out based on the principle of comprehensive minimum fluctuation within each data interval, and the matrix sparse technique is introduced to reduce the computational time complexity. Finally, simulations and field data are adopted to conduct a comparative analysis, and results indicate that compared with the existing methods, the proposed method can more accurately estimate the utility harmonic impedance and demonstrate a higher computational efficiency.

Utility harmonic impedance  /  abrupt change in background harmonics  /  continuous unsmooth fluctuation  /  binary sliding T maximum  /  comprehensive minimum fluctuation
王小明, 郑浩, 赵文广, 文一, 朱明星中国电源学会高级会员, 丁同. 计及背景谐波时变特征的系统谐波阻抗估计方法. 电源学报, 2025 , 23 (3) : 36 -46 . DOI: 10.13234/j.issn.2095-2805.2025.3.36
Xiaoming WANG, Hao ZHENG, Wenguang ZHAO, Yi WEN, Mingxing ZHU, Tong DING. Utility Harmonic Impedance Estimation Method Considering Time-varying Characteristics of Background Harmonics[J]. Journal of Power Supply, 2025 , 23 (3) : 36 -46 . DOI: 10.13234/j.issn.2095-2805.2025.3.36
基金
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  • 国家电网有限公司科技资助项目(52120524000X)
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doi: 10.13234/j.issn.2095-2805.2025.3.36
  • 接收时间：2024-10-21
  • 首发时间：2026-10-26
  • 出版时间：2025-05-30
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  • 收稿日期：2024-10-21
  • 修回日期：2024-11-22
  • 录用日期：2024-12-05
基金
Science and Technology Program of State Grid Corporation of China(52120524000X)
国家电网有限公司科技资助项目(52120524000X)
作者信息
    1.国网安徽省电力有限公司电力科学研究院，合肥　230601
    2.国网安徽省电力有限公司，合肥　230022
    3.安徽大学电气工程与自动化学院，合肥　230601

通讯作者:

丁同（1994—　），男，通信作者，博士，讲师。研究方向：电能质量分析与控制。E-mail：。
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2种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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