Article(id=1202649046281314750, tenantId=1146029695717560320, journalId=1190235702286704641, issueId=1202649045064970391, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1731859200000, receivedDateStr=2024-11-18, revisedDate=1733155200000, revisedDateStr=2024-12-03, acceptedDate=null, acceptedDateStr=null, onlineDate=1764663476771, onlineDateStr=2025-12-02, pubDate=1744646400000, pubDateStr=2025-04-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1764663476771, onlineIssueDateStr=2025-12-02, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1764663476771, creator=13701087609, updateTime=1764663476771, updator=13701087609, issue=Issue{id=1202649045064970391, tenantId=1146029695717560320, journalId=1190235702286704641, year='2025', volume='26', issue='4', pageStart='1', pageEnd='84', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1764663476482, creator=13701087609, updateTime=1768394410677, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1218297717336490184, tenantId=1146029695717560320, journalId=1190235702286704641, issueId=1202649045064970391, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1218297717336490185, tenantId=1146029695717560320, journalId=1190235702286704641, issueId=1202649045064970391, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=7, endPage=12, ext={EN=ArticleExt(id=1202649046574916032, articleId=1202649046281314750, tenantId=1146029695717560320, journalId=1190235702286704641, language=EN, title=Sequence-adaptive high impedance fault detection model, columnId=1190338913429459072, journalTitle=Electrical Engineering, columnName=Research & Development, runingTitle=null, highlight=null, articleAbstract=
High impedance fault (HIF) is difficult to detect because of the low fault current amplitude and they can be easily confused with switching events. Existing HIF detection methods mainly rely on fixed time-window data. However, a fixed decision time often fails to balance the accuracy and speed of HIF detection. Thus, a sequence-adaptive HIF detection model is proposed in this paper. Firstly, zero-sequence current data of the faulty feeder are processed into variable-length training set. Then, a gated recurrent unit (GRU) model is trained based on variable-length data and cost-sensitive coefficient method to construct biased models. Two GRU models with opposite propensities are combined into an evaluation model. The test results on the PSCAD/EMTDC simulation platform show that the detection accuracy rate of this proposed model can reach 99.13%, and the detection speed is improved by at least 37.52% compared to the fixed time-window method. Delayed decision-making improves the accuracy of HIF detection and reduces the risk of harm.
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高阻接地故障(HIF)的故障电流幅值较小且易与开关事件混淆,导致HIF检测难度较大。现有研究主要基于固定时间窗口的数据进行检测,往往难以兼顾HIF检测准确性和快速性。鉴于此,本文提出一种时序自适应HIF检测模型。首先,将故障馈线的零序电流数据制成变长数据训练集;然后,结合代价敏感系数法,利用变长数据训练门控循环单元(GRU)模型,使模型具有倾向性;最后,将两个倾向性相反的GRU模型集成为一个组合模型进行HIF检测。在PSCAD/EMTDC仿真平台的测试结果表明,本文所提HIF检测模型的检测准确率可以达到99.13%,且检测速度相对于固定时间窗口的方法提高了至少37.52%。本文方法通过延迟决策提高了HIF检测的准确性,并降低了因不及时检测导致伤害的风险。
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林系紊(1999—),男,福建省福鼎市人,硕士研究生,主要研究方向为配电网高阻接地故障深度学习检测。
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林系紊(1999—),男,福建省福鼎市人,硕士研究生,主要研究方向为配电网高阻接地故障深度学习检测。
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https://doi.org/10.13336/j.1003-6520.hve.20231972., articleTitle=基于实测不均衡小样本的配电网高阻接地故障检测方法, refAbstract=null)], funds=[Fund(id=1218290867543131036, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1202649046281314750, awardId=2022J01113, language=CN, fundingSource=福建省自然科学基金(2022J01113), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1218290862291862283, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1202649046281314750, xref=null, ext=[AuthorCompanyExt(id=1218290862300250893, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1202649046281314750, companyId=1218290862291862283, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Fujian Key Laboratory of New Energy Generation and Power Conversion (College of Electrical Engineering and Automation, Fuzhou University), Fuzhou 350108), AuthorCompanyExt(id=1218290862308639502, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1202649046281314750, companyId=1218290862291862283, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=福建省新能源发电与电能变换重点实验室(福州大学电气工程与自动化学院),福州 350108)])], figs=[ArticleFig(id=1218290863852143447, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1202649046281314750, language=EN, label=null, caption=null, figureFileSmall=aO4Fd3tVurIUKmcPdZoNuA==, figureFileBig=NuaWkDb4Dps59dKd3vOAkA==, tableContent=null), ArticleFig(id=1218290863957001050, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1202649046281314750, language=CN, label=图1, caption=
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10kV配电网仿真拓扑结构, figureFileSmall=QUn8dnsmzSO+BB8YN4Rbig==, figureFileBig=2DCN3eDh7WddiYaMkoJUqw==, tableContent=null), ArticleFig(id=1218290864586146670, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1202649046281314750, language=EN, label=null, caption=null, figureFileSmall=ToM9EbR+kUPEK2v8V9FaCw==, figureFileBig=Mi9an17IU5hszbIYfIRuHQ==, tableContent=null), ArticleFig(id=1218290864678421362, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1202649046281314750, language=CN, label=图5, caption=
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| yOEM | yDEM | 结果 |
| 故障 | 故障 | 故障(可靠) |
| 非故障 | 非故障 | 非故障(可靠) |
| 故障 | 非故障 | 不可靠 |
| 非故障 | 故障 | 不可靠 |
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可靠性评估规则
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| yOEM | yDEM | 结果 |
| 故障 | 故障 | 故障(可靠) |
| 非故障 | 非故障 | 非故障(可靠) |
| 故障 | 非故障 | 不可靠 |
| 非故障 | 故障 | 不可靠 |
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| 线路类型 | 序分量 | 电阻值/ (Ω/km) | 电感值/ (mH/km) | 电容值/ (μF/km) |
| 架空线路 | 正序 | 0.170 0 | 1.200 0 | 0.009 7 |
| 零序 | 0.230 0 | 5.480 0 | 0.006 0 |
| 电缆线路 | 正序 | 0.270 0 | 0.255 0 | 0.339 0 |
| 零序 | 2.700 0 | 1.019 0 | 0.280 0 |
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线路参数
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| 线路类型 | 序分量 | 电阻值/ (Ω/km) | 电感值/ (mH/km) | 电容值/ (μF/km) |
| 架空线路 | 正序 | 0.170 0 | 1.200 0 | 0.009 7 |
| 零序 | 0.230 0 | 5.480 0 | 0.006 0 |
| 电缆线路 | 正序 | 0.270 0 | 0.255 0 | 0.339 0 |
| 零序 | 2.700 0 | 1.019 0 | 0.280 0 |
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| 样本类型 | 初相位 | 故障电阻 | 仿真模型 | 样本数 |
| 高阻接地 | 0°, 30°, 60°, 90°, 120°, 150° | 300Ω~3kΩ | Emanuel | 1 613 |
| 电容投切 | | 三相电容器 | 690 |
| 负荷投切 | 不平衡负载 | 690 |
| 励磁涌流 | 空载变压器 | 507 |
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样本仿真参数
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| 样本类型 | 初相位 | 故障电阻 | 仿真模型 | 样本数 |
| 高阻接地 | 0°, 30°, 60°, 90°, 120°, 150° | 300Ω~3kΩ | Emanuel | 1 613 |
| 电容投切 | | 三相电容器 | 690 |
| 负荷投切 | 不平衡负载 | 690 |
| 励磁涌流 | 空载变压器 | 507 |
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| 实际标签 | 预测标签 |
| HIF | 非故障 | 不确定 |
| HIF | TN | FP | UC |
| 非故障 | FN | TP |
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组合模型可靠性评估结果
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| 实际标签 | 预测标签 |
| HIF | 非故障 | 不确定 |
| HIF | TN | FP | UC |
| 非故障 | FN | TP |
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| 模型 | 平均检测 时间/ms | PFD/% | PFA/% | 准确率/% |
| XGBC (T=6.25ms) | 6.250 | 3.03 | 2.86 | 97.07 |
| Catboost (T=6.25ms) | 6.250 | 2.88 | 2.74 | 97.20 |
| CNN (T=6.25ms) | 6.250 | 2.27 | 2.02 | 97.87 |
| GRU (T=6.25ms) | 6.250 | 1.97 | 2.42 | 98.07 |
| XGBC (T=10ms) | 10.000 | 1.82 | 1.91 | 98.13 |
| Catboost (T=10ms) | 10.000 | 1.52 | 1.55 | 98.47 |
| CNN (T=10ms) | 10.000 | 1.37 | 1.55 | 98.53 |
| GRU (T=10ms) | 10.000 | 0.91 | 0.83 | 99.13 |
| 本文模型 | 3.905 | 0.15 | 1.43 | 99.13 |
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不同模型检测性能
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| 模型 | 平均检测 时间/ms | PFD/% | PFA/% | 准确率/% |
| XGBC (T=6.25ms) | 6.250 | 3.03 | 2.86 | 97.07 |
| Catboost (T=6.25ms) | 6.250 | 2.88 | 2.74 | 97.20 |
| CNN (T=6.25ms) | 6.250 | 2.27 | 2.02 | 97.87 |
| GRU (T=6.25ms) | 6.250 | 1.97 | 2.42 | 98.07 |
| XGBC (T=10ms) | 10.000 | 1.82 | 1.91 | 98.13 |
| Catboost (T=10ms) | 10.000 | 1.52 | 1.55 | 98.47 |
| CNN (T=10ms) | 10.000 | 1.37 | 1.55 | 98.53 |
| GRU (T=10ms) | 10.000 | 0.91 | 0.83 | 99.13 |
| 本文模型 | 3.905 | 0.15 | 1.43 | 99.13 |
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| 时间窗/ms | 不确定样本数 | 正确结果数 | 误判数 | 准确率/% |
| 3.75 | 100 | 1 396 | 4 | 99.71 |
| 5.00 | 45 | 1 447 | 8 | 99.45 |
| 6.25 | 19 | 1 472 | 9 | 99.39 |
| 7.50 | 11 | 1 477 | 12 | 99.19 |
| 8.75 | 11 | 1 477 | 12 | 99.19 |
| 10.00 | 0 | 1 487 | 13 | 99.13 |
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本文模型评估结果
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| 时间窗/ms | 不确定样本数 | 正确结果数 | 误判数 | 准确率/% |
| 3.75 | 100 | 1 396 | 4 | 99.71 |
| 5.00 | 45 | 1 447 | 8 | 99.45 |
| 6.25 | 19 | 1 472 | 9 | 99.39 |
| 7.50 | 11 | 1 477 | 12 | 99.19 |
| 8.75 | 11 | 1 477 | 12 | 99.19 |
| 10.00 | 0 | 1 487 | 13 | 99.13 |
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