资源描述:
《毕业论文--电力电缆试验方法》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、哈尔滨理工大学学士学位论文电力电缆试验方法摘要电力电缆主要用于分配和输送电能,具有占地少,受外界影响小、有利于提高电力系统功率因数等优点。电力电缆在电力系统及城市配网中使用广泛,它的绝缘状况直接影响电力系统发、供、配电的安全运行,因此应当按照要求对其进行电气试验,以便及时发现缺陷。本文从试验目的、用途等角度出发,论述了各种试验对电力电缆绝缘检测的必要性;结合国内、外相关试验规程和标准,对试验电压、测试时间、试验温度等参数进行取值;并结合试验原理图和试验装置介绍各试验的试验原理及试验方法。具体内容包
2、括:(1)绝缘电阻测量的直流比较法、电压比较法、电桥法;(2)局部放电试验的短电缆试验、不接终端阻抗的长电缆试验、接终端阻抗的长电缆试验、采用反射抑制器的长电缆试验、OWTS振荡波法电缆局放测试、HFCF传感器(脉冲电流法)检测、超低频检测电缆局放技术;(3)交流耐压试验的串联谐振试验、工频串联谐振耐压试验、变频谐振试验方法;(4)冲击电压试验的耐受冲击电压试验、雷电冲击电压裕度试验。关键词:绝缘电阻测量;局部放电试验;交流耐压试验;冲击电压试验-II-哈尔滨理工大学学士学位论文TestingMe
3、thodsForPowerCableAbstractPowercableismainlyusedfordistributionanddeliveryofelectricity.Ithasmanyadvantages,suchaslittleinfluenceofoutsideandhelpingtoimprovethepowerfactorofelectricpowersystem,etc.Powercableiswidelyusedinthepowersystemandurbandistribu
4、tionnetwork.ThesituationofPowercables’insulationinfluenceselectricpowersystemsafetyoperationdirectly.Therefore,accordingtotherequirements,weshouldhaveelectricalteststomakesurefindingthedefectintime.Fromthetestpurposesandsignificance,thispaperdiscusses
5、thenecessaryofeachtestinthedetectionofpowercables;combiningwithdomesticandforeigntestingrulesandstandards,thevalueofthetestvoltage,testtime,testtemperatureandotherparameterscanbegot;combiningwithtestschematicandtestdevicetest,thetestprincipleandtestme
6、thodsareintroducedinhere.Topicsinclude:(1)DCcomparativelaw,voltagecomparativelawandBridgemethodfortheinsulationresistancetest;(2)shortcabletest,non-terminallongcabletest,terminallongcabletest,reflexinhibitionlongcabletest,theOWTSshakewavelawcablePDtes
7、t,thedetectionofHFCFsensor(pulsecurrentmethod),ultra-lowfrequencydetectioncablePDtestforpartialdischargetest;(3)the0.1Hzultra-lowfrequencywithstandtest,seriesresonanttest,thepowerfrequencyofseriesresonantwithstandvoltagetest,frequencyresonanttestforAC
8、withstandvoltagetest;(4)withstandimpulsevoltagetestandlightningimpulsetestvoltagemarginforimpulsevoltagetest.Keywords:insulationresistancetest;partialdischargetest;ACwithstandvoltagetest;impulsevoltagetest不要删除行尾的分节符,此行不会被打印-II-哈尔滨理工大学学士学位论文目录摘