电力信息与通信技术ElectricPowerInformationandCommunicationTechnologyVol.21No.2Feb.2023第21卷第2期2023年2月www.dlxxtx.com面向线路微风振动监测的可调频电磁式振动能量采集器张明皓1，宋睿1，张树华1，王俊元2，李运甲2（1.中国电力科学研究院有限公司，北京市海淀区100192；2.西安交通大学电气工程学院，陕西省西安市710049）AFrequencyAdjustableElectromagneticVibrationEnergyHarvesterforBreezeVibrationMonitoringofTransmissionLinesZHANGMinghao1,SONGRui1,ZHANGShuhua1,WANGJunyuan2,LIYunjia2(1.ChinaElectricPowerResearchInstituteCo.,Ltd.,HaidianDistrict,Beijing100192,China;2.DepartmentofElectricalEngineering,Xi'anJiaotongUniversity,Xi'an710049,ShaanxiProvince,China)摘要：导线微风振动具有随机、宽频的特征，针对导线微风振动情况进行监测可防止断股、断线等灾害发生。目前微风振动传感器取电手段较单一，制约其可靠性的提升。文章设计一种基于改变梁长的可调频电磁式振动能量采集器，为丰富传感器的供能手段奠定了基础。器件的拾振结构由聚酰亚胺柔性梁和磁铁部分构成，且能够通过手动调节梁长的方式改变其谐振频率，使该能量采集器存在极大的调频范围。测试结果表明，在2.5~8.5mm的梁长范围内，电磁式振动能量采集器谐振频率调整范围为24.5~73.3Hz，在0.22g加速度下输出电压峰峰值的变化范围为56.7~214.5mV，为成为微风振动传感器的补充能源奠定基础。关键词：振动；能量收集；电磁式；调频机构ABSTRACT:Thebreezevibrationofwirehasrandombroadbandcharacteristics.Monitoringthebreezevibrationofwirecanpreventstrandbreakageandotherdisasters.Atpresent,thepowersupplymethodofbreezevibrationsensorisrelativelysimple,whichrestrictstheimprovementofreliability.Inthispaper,afrequencyadjustableelectromagneticvibrationenergyharvesterbychangingthebeamlengthispresented,whichprovidesthebasisforenrichingtheenergysupplymethod.Thevibrationpickingstructureofthedeviceiscomposedbyaflexiblepolyimidebeamandamagnet,andtheresonantfrequencycanbechangedbyadjustingthelengthofthebeam,whichmakestheenergyharvesterhaveawidelyfrequencymodulationrange.Thetestresultsverifiedthatthebeamlengthvariesfrom2.5mmto8.5mm,whiletheresonantfrequencycoveredfrom24.5Hzto73.3Hz.Undertheaccelera...
