Article(id=1223202689513804406, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223202678788965355, articleNumber=null, orderNo=null, doi=10.20040/j.cnki.1000-7709.2023.20222578, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1670774400000, receivedDateStr=2022-12-12, revisedDate=1680019200000, revisedDateStr=2023-03-29, acceptedDate=null, acceptedDateStr=null, onlineDate=1769563847186, onlineDateStr=2026-01-28, pubDate=1703433600000, pubDateStr=2023-12-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769563847186, onlineIssueDateStr=2026-01-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769563847186, creator=13701087609, updateTime=1769563847186, updator=13701087609, issue=Issue{id=1223202678788965355, tenantId=1146029695717560320, journalId=1205116964453384197, year='2023', volume='41', issue='12', pageStart='1', pageEnd='228', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769563844630, creator=13701087609, updateTime=1769563913308, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1223202966899901286, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223202678788965355, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1223202966899901287, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223202678788965355, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=215, endPage=219, ext={EN=ArticleExt(id=1223202689903874716, articleId=1223202689513804406, tenantId=1146029695717560320, journalId=1205116964453384197, language=EN, title=Utility Harmonic Impedance Calculation Method Based on Generalized Jackknife Least Square Estimation, columnId=1222940986234364233, journalTitle=Water Resources and Power, columnName=ELECTRICAL ENGINEERING, runingTitle=null, highlight=null, articleAbstract=

Aiming at the problem that the background harmonic voltage fluctuation and the abnormal harmonic measurement samples significantly affect the accuracy of harmonic impedance estimation, a method for calculating utility harmonic impedance based on generalized jackknife least square estimation and data screening is proposed. According to the principle that the assumption of the fluctuation method and least squares regression are the same, the measurement period when the background harmonic voltage fluctuation is stable is selected for the regression calculation, which can restrain the influence of background harmonic voltage fluctuation on impedance estimation. According to the jackknife principle, the harmonic measurement data is resampled, and the generalized least square method is combined to effectively suppress the adverse effects of abnormal measurement data on the regression. The accuracy and practicability of the proposed method are verified by simulation and actual measured data test.

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针对背景谐波电压波动和异常谐波测量样本显著影响谐波阻抗估计准确性的问题,提出一种基于广义折刀最小二乘估计和数据筛选的系统侧谐波阻抗的计算方法。根据波动量法与最小二乘回归法假设的一致性原理,筛选背景谐波电压波动平稳的时段用于回归计算,抑制背景谐波电压波动对阻抗估计的影响。依据折刀法原理对谐波测量数据进行再抽样,并结合广义最小二乘法,进一步抑制异常谐波测量样本对回归计算的影响,最后基于仿真和工程实测数据验证了所提方法的准确性和实用性。

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胡元潮(1988-),男,博士、讲师、硕导,研究方向为电力系统防雷与接地技术,电能质量、电工新材料及其应用技术等,E-mail:
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吴玉涛(1994-),男,硕士研究生、助理工程师,研究方向为电能质量、谐波状态估计、配电工程建设等,E-mail:

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吴玉涛(1994-),男,硕士研究生、助理工程师,研究方向为电能质量、谐波状态估计、配电工程建设等,E-mail:

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吴玉涛(1994-),男,硕士研究生、助理工程师,研究方向为电能质量、谐波状态估计、配电工程建设等,E-mail:

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基于广义折刀最小二乘估计的系统侧谐波阻抗计算方法
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吴玉涛 1 , 张瑗君 2 , 胡元潮 1 , 陈小娣 3 , 张阳 4
水电能源科学 | 电气工程 2023,41(12): 215-219
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水电能源科学 | 电气工程 2023, 41(12): 215-219
基于广义折刀最小二乘估计的系统侧谐波阻抗计算方法
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吴玉涛1 , 张瑗君2, 胡元潮1 , 陈小娣3, 张阳4
作者信息
  • 1.山东理工大学电气与电子工程学院,山东 淄博 255000
  • 2.国网山东省电力公司寒亭区供电公司,山东 潍坊 261100
  • 3.国网山东省电力公司泰安供电公司,山东 泰安 271000
  • 4.国网山东省电力公司潍坊供电公司,山东 潍坊 261000
  • 吴玉涛(1994-),男,硕士研究生、助理工程师,研究方向为电能质量、谐波状态估计、配电工程建设等,E-mail:

通讯作者:

胡元潮(1988-),男,博士、讲师、硕导,研究方向为电力系统防雷与接地技术,电能质量、电工新材料及其应用技术等,E-mail:
Utility Harmonic Impedance Calculation Method Based on Generalized Jackknife Least Square Estimation
Yu-tao WU1 , Yuan-jun ZHANG2, Yuan-chao HU1 , Xiao-di CHEN3, Yang ZHANG4
Affiliations
  • 1.Electrical and Electronic Engineering College, Shandong University of Technology, Zibo 255000, China
  • 2.State Grid Hanting Electric Power Company, Weifang 261100, China
  • 3.State Grid Taian Electric Power Company, Taian 271000, China
  • 4.State Grid Weifang Electric Power Company, Weifang 261000, China
出版时间: 2023-12-25 doi: 10.20040/j.cnki.1000-7709.2023.20222578
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针对背景谐波电压波动和异常谐波测量样本显著影响谐波阻抗估计准确性的问题,提出一种基于广义折刀最小二乘估计和数据筛选的系统侧谐波阻抗的计算方法。根据波动量法与最小二乘回归法假设的一致性原理,筛选背景谐波电压波动平稳的时段用于回归计算,抑制背景谐波电压波动对阻抗估计的影响。依据折刀法原理对谐波测量数据进行再抽样,并结合广义最小二乘法,进一步抑制异常谐波测量样本对回归计算的影响,最后基于仿真和工程实测数据验证了所提方法的准确性和实用性。

系统侧谐波阻抗  /  折刀原理  /  广义最小二乘  /  背景谐波  /  数据筛选

Aiming at the problem that the background harmonic voltage fluctuation and the abnormal harmonic measurement samples significantly affect the accuracy of harmonic impedance estimation, a method for calculating utility harmonic impedance based on generalized jackknife least square estimation and data screening is proposed. According to the principle that the assumption of the fluctuation method and least squares regression are the same, the measurement period when the background harmonic voltage fluctuation is stable is selected for the regression calculation, which can restrain the influence of background harmonic voltage fluctuation on impedance estimation. According to the jackknife principle, the harmonic measurement data is resampled, and the generalized least square method is combined to effectively suppress the adverse effects of abnormal measurement data on the regression. The accuracy and practicability of the proposed method are verified by simulation and actual measured data test.

utility harmonic impedance  /  jackknife principle  /  generalized least squares  /  background harmonic  /  data screening
吴玉涛, 张瑗君, 胡元潮, 陈小娣, 张阳. 基于广义折刀最小二乘估计的系统侧谐波阻抗计算方法. 水电能源科学, 2023 , 41 (12) : 215 -219 . DOI: 10.20040/j.cnki.1000-7709.2023.20222578
Yu-tao WU, Yuan-jun ZHANG, Yuan-chao HU, Xiao-di CHEN, Yang ZHANG. Utility Harmonic Impedance Calculation Method Based on Generalized Jackknife Least Square Estimation[J]. Water Resources and Power, 2023 , 41 (12) : 215 -219 . DOI: 10.20040/j.cnki.1000-7709.2023.20222578
  • 山东省自然科学基金青年项目(ZR2020QE215)
2023年第41卷第12期
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doi: 10.20040/j.cnki.1000-7709.2023.20222578
  • 接收时间:2022-12-12
  • 首发时间:2026-01-28
  • 出版时间:2023-12-25
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  • 收稿日期:2022-12-12
  • 修回日期:2023-03-29
基金
山东省自然科学基金青年项目(ZR2020QE215)
作者信息
    1.山东理工大学电气与电子工程学院,山东 淄博 255000
    2.国网山东省电力公司寒亭区供电公司,山东 潍坊 261100
    3.国网山东省电力公司泰安供电公司,山东 泰安 271000
    4.国网山东省电力公司潍坊供电公司,山东 潍坊 261000

通讯作者:

胡元潮(1988-),男,博士、讲师、硕导,研究方向为电力系统防雷与接地技术,电能质量、电工新材料及其应用技术等,E-mail:
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2种不同金属材料的力学参数

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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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