[1]张小勇,李自乾,韩 敏,等.基于数据 物理融合的单相接地故障诊断方法[J].机械与电子,2025,(07):24-29.
　ZHANG Xiaoyong,LI Ziqian,HAN Min,et al.A Single-phase Grounding Fault Location Method Based on Data-physics Integration[J].Machinery & Electronics,2025,(07):24-29.
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基于数据 物理融合的单相接地故障诊断方法()
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《机械与电子》[ISSN:1001-2257/CN:52-1052/TH]

卷:
期数:
2025年07期
页码:
24-29
栏目:
研究与设计
出版日期:
2025-07-27

文章信息/Info

Title:
A Single-phase Grounding Fault Location Method Based on Data-physics Integration
文章编号:
1001-2257 ( 2025 ) 07-0024-06
作者:
张小勇; 李自乾; 韩 敏; 夏 旺; 黄维成
国网甘肃省电力公司平凉供电公司,甘肃 平凉 744000
Author(s):
ZHANG Xiaoyong ;  LI Ziqian ;  HAN Min ;  XIA Wang ;  HUANG Weicheng
( Pingliang Electric Power Supply Company , State Grid Gansu Electric Power Company , Pingliang 744000 , China )
关键词:
单相接地故障; 集中型 FA ; 故障诊断; 负荷预测; 极限学习机
Keywords:
single-phase ground fault ;  centralized FA ;  fault judgment ;  load forecasting ;  extreme learning machine
分类号:
TM862 ;TP18
文献标志码:
A
摘要:
针对单相接地故障频发且难以准确定位故障发生区段的问题,提出了一种基于数据 物理融合的单相接地故障两阶段诊断方法。首先,根据集中型馈线自动化系统的诊断流程,通过改进的极限学习机算法提高馈线自动化故障识别能力。然后,预测故障发生时刻各配变的负荷值,累加得到各开关的负荷占比,进而比较故障发生时馈线负荷骤降度与各开关负荷占比,对故障区段进行定位。最后,结合两阶段的诊断结果确定最终的故障发生位置并进行隔离。通过仿真验证,表明所提方法能够有效提高单相接地故障诊断的准确性。
Abstract:
To solve the problem of frequent single phase grounding faults and difficulty in accurately locating the fault occurrence section , a method based on data physics integration two stage location of single phase grounding faults was proposed.Firstly , according to the research and judgment process of centralized feeder automation ( FA ), the improved Extreme Learning Machine ( ELM ) algorithm was used to improve the FA fault identification and analysis ability.Then , the load value of each distribution transformer at the time of fault occurrence was predicted , and the load proportion of each switch was obtained by accumulating.Subsequently , the load drop of the feeder and the proportion of the load of each switch were compared when the fault occurs , and the fault section was located.Finally , combined with the results of the two stages , the final fault location was determined and isolated.Through simulation verification , it is shown that the proposed method can effectively improve the accuracy of judging and isolating single-phase grounding faults.

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相似文献/References:

[1]牛艳利,孙伯龙,邢 悦,等.含分布式电源的小电阻接地系统故障定位方法[J].机械与电子,2021,(08):23.
　NIU Yanli,SUN Bolong,XING Yue,et al.Fault Location Method of Low Resistance Grounding System with Distributed Power Supply[J].Machinery & Electronics,2021,(07):23.

备注/Memo

备注/Memo:
收稿日期: 2024-11-14
基金项目:国网甘肃省电力公司科技项目( 52270923000A )
作者简介:张小勇 ( 1977- ),男,甘肃平凉人,高级工程师,研究方向为配电网运行维护和管理;李自乾 ( 1994- ),男,甘肃平凉人,工程师,研究方向为电网运行、智能电网技术与设备。
更新日期/Last Update: 2025-09-01