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ID:33341594
大小:1.84 MB
页数:6页
时间:2019-02-24
《改进的变压器绕组变形带电检测方法》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、第54卷第10期:0085-0089Vol.54,No.10:0085-00892018年10月16日HighVoltageApparatusOct.16,2018DOI:10.13296/j.1001-1609.hva.2018.10.015改进的变压器绕组变形带电检测方法1211222王岩,刘云鹏,陈展,裴植,胡焕,程槐号,田源(1.佛山供电局,广东佛山528000;2.华北电力大学河北省输变电设备安全防御重点实验室,河北保定071003)摘要:变压器绕组变形带电检测技术的应用有利于提高变压器运行的安全可靠性,降低停电检修带来的经济损失。文
2、中指出了目前绕组带电检测研究的不足之处并做出了改进,提出了一种基于耦合电容器注入信号的变压器绕组变形带电检测方法。利用耦合电容器将泰克大功率信号发生器输出的扫频信号通过中性点套管注入变压器中,并测量改造后的高压套管末屏接地电流作为响应信号,最后将输入信号及响应信号输入工控机中进行数据处理,得到被测绕组的频率响应曲线。文中先是搭建了变压器绕组的电路仿真模型,通过理论说明所提出方法的可行性。最后,对一台110kV真实变压器进行了测试,试验结果表明,该方法具备实际在线应用的潜力。关键词:变压器;绕组变形;带电检测;电容耦合;频率响应分析法Improv
3、edChargedDetectionMethodofTransformerWindingDeformation1211222WANGYan,LIUYunpeng,CHENZhan,PEIZhi,HUHuan,CHENGHuaihao,TIANYuan(1.FoshanPowerSupplyBureau,GuangdongFoshan528000,China;2.KeyLaboratoryofHebeiProvincePowerTransmissionEquipmentSecurityDefense,NorthChinaElectricPower
4、University,HebeiBaoding071003,China)Abstract:Theapplicationofchargeddetectiontechnologyoftransformerwindingdeformationisbeneficialtoim⁃provethesafetyandreliabilityoftransformeroperation,andreducetheeconomiclosscausedbyoutagemainte⁃nance.Thispaperpointsoutthedeficiencyofthecu
5、rrentresearchonthechargeddetectionofthewindingandmakesanimprovement,andputsforwardanewmethodforthedetectionofthetransformerwindingdeformationbasedonthesignalinjectionusingcouplingcapacitor.Inthispaper,sweepsignalofTektronixhighpowersignalgeneratorisinjectedintotransformerthr
6、oughtheneutralbushingbyusingthecouplingcapacitor,andthegroundcurrentofthehighvoltagebushingtapismeasuredasaresponsesignal.Then,theinputsignalandresponsesignalareinputtotheindustrialcomputerfordataprocessing,andthefrequencyresponsecurveofthemeasuredwindingisobtained.Inthispap
7、er,thecircuitsimulationmodeloftransformerwindingisbuilt,andthefeasibilityoftheproposedmethodisillustratedbythetheory.Finally,a110kVrealtransformeristested.Thetestresultsshowthatthemethodhasthepotentialforpracticalapplication.Keywords:transformer;windingdeformation;chargeddet
8、ection;capacitivecoupling;frequencyresponseanalysis[2]可得知,绕组是变压器最容易发生损坏的部位之
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