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分级供电系统单相接地故障诊断技术的研究

分级供电系统单相接地故障诊断技术的研究

Research on single-phase-to-ground fault diagnosis technology for graded power supply system

Research on single-phase-to-ground fault diagnosis technology for graded power supply system

doi:
10.3969/j.issn.1001-1390.2018.04.006
摘要:
分级供电系统发生单相接地故障后,一级变电站和二级开闭站都会动作选线,大量的警报信息容易造成调度人员误判.文章提出了基于粗糙集理论的单相接地故障诊断技术,利用粗糙集理论的数据约简能力,有效整合具有相关性的信息,同时消除冗余信息,提高识别信息的快速性.另外利用粗糙集理论较强的容错能力,在诊断过程中,自动滤出并修正矛盾信息,提高诊断的准确性.设计了实用化的单相接地故障诊断系统,通过现场实际应用数据分析,充分验证了诊断技术的正确性.
Abstract:
Once the single-phase-to-ground fault occurs in the graded power supply system,the primary substation and the secondary switching stations will select the fault line,and the large number of alarm information will cause misjudge of the dispatchers.In this paper,a single-phase-to-ground fault diagnosis technique based on rough set theory is proposed,which utilizes the data reduction capability of rough set theory to effectively integrate the relevant information,and eliminate redundant information to improve the rapidity of identification information.In addition,in the process of diagnosis,the strong fault tolerance of the rough set theory is used to improve the accuracy of the diagnosis by filtering out the contradictory information and correcting the contradictory information automatically.This paper designs a practical single-phase-to-ground fault diagnosis system,which fully verifies the correctness of the diagnosis technology by the practical application of data analysis.
作者 杨海生 [1] 杨孟卓 [1] 史承杰 [1] 齐郑 [2]
Author: Yang Haisheng[1] Yang Mengzhuo[1] Shi Chengjie[1] Qi Zheng[2]
作者单位
  1. 国网晋中供电公司,山西晋中,030600
  2. 华北电力大学电气与电子工程学院,北京,102206
期 刊: 电测与仪表 ISTIC EI SCI PKU CSSCI
Journal: Electrical Measurement & Instrumentation
年,卷(期) 2018, 55(4)
分类号 TM752
关键词: 分级供电系统 知识脉络 粗糙集 知识脉络 决策表 知识脉络 故障诊断 知识脉络
Keywords: graded power supply system rough set decision-making table fault diagnosis
机标分类号
基金项目 国家自然科学基金资助项目
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