基于最小二乘法的模糊故障选相相关分析研究 correlation analysis based on fuzzy fault selection phase of least square method.pdfVIP
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基于最小二乘法的模糊故障选相相关分析研究 correlation analysis based on fuzzy fault selection phase of least square method
‘电气开关(2009.No.3)
文章编号:l004—289X(2009)03—0030—04
基于最小二乘法的模糊故障选相相关分析研究
范李平
(三峡大学电气信息学院湖北 宜昌443002)
摘要:提出了一种基于最小二乘法的模糊故障选相序分量的相关分析法。首先提出基于电流相关分析的选相
算法,并分析其优势和不足,然后在其基础上提出基于模糊理论电流与电压相结合的选相算法,有效的解决了在
发生转换性故障出现的误选现象,最后通过PsCAD仿真验证了该综合选相方案的有效性,大大提高了在高阻接
地时选相的灵敏度和两相接地短路的可靠性。
关键词:输电线路;故障选相;相关分析;模糊理论
中图分类号:TM72 文献标识码:B
CorrelationBasedon FaultSelectionPh嬲eofLeast Method
Analysis Fuzzy Square
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is forwardtlle
basedon faultselection le船t method in
Abstract:A square paper.
correlation醐alysisfu拢y pha∞of put
shon-
selection basedoncun.ent is and its and
First,t}Ie phase蛔ri山m con.elation肌alysispmposedanalyzeadVantages
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t}lebasisof
comings.Then this,tIleselecti伽phasealgoritll硼basedfuzzyt}leory
when
is ise丘.ectiveto∞lveenDr8electioncommutation
agepropsed,it fault印pea璐.Finauy,tllefeasibili哆of山esyn-
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tlletic∞lectionverifiedPSCADsimulation.Itmisestlle t11eselection
pha∞is by sensitivi哆of phasehi曲resistaIlcegr-
andtlle shortcircuit.
cunding reliabil时of附ophase伊ound
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