资源描述：
《用电信息采集设备可靠性验证试验》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44卷第504期电测与仪表Vol.44No.5042007年第12期ElectricalMeasurement&InstrumentationDec.2007用电信息采集设备可靠性验证试验申丽娟，刘宣，刘岩，董俐君（中国电力科学研究院，北京100192）摘要：在用电信息采集系统建设中，为实现“全覆盖、全采集、全费控”的目标，确保电能数据的安全和完整，要求采集设备具有很高的可靠性。针对采集设备多应力和多失效模式的情形，提出采集设备可靠性验证试验方法。建立采集设备的可靠性串联模型，给出失效模式和失效判据；开展温湿度恒定应力加速寿命试验，确定试验应力水平、样本量
2、、加速模型、最小试验时间、试验终止时间和试验方法；基于最小二乘法估计多个失效模式在各组应力水平下的寿命分布参数，推导出使用条件下采集设备的累积失效分布；验证某批配变终端5年时的可靠度为0.839，不满足失效概率≤10%的要求。关键词：用电信息采集设备；可靠性验证；加速寿命试验；Peck模型；威布尔分布中图分类号：TM933文献标识码：A文章编号：1001-1390（2014）00-0000-00中图分类号：文献标识码：文章编号：ReliabilityComplianceTestforElectricalEnergyDataAcquisitionEquipme
3、ntsSHENLi-juan,LIUXuan,DONGLi-jun(ChinaElectricPowerResearchInstitute,Beijing100192,China)Abstract：Duringtheconstructionofelectricalenergydataacquisitionsystem,thedataacquisitionequipmentisaskedforhighreliabilitytotoachievefullacquisitionofthedataandensurethesecurityandintegrityoft
4、hedata,acquisitionequipmentsarerequiredtobehighlyreliableunderdifferentoperatingenvironments.Areliabilitycompliancetestmethodisproposedinthispaperaimingatthesituationofmultistressesandfailuremodesforacquisitionequipment.Thereliabilitycascademodelisestablishedandthefailuremodeandfai
5、lurecriteriaarepresented.Inordertoverifywhetherthereliabilityofacquisitionequipmentsmeetstheindustrialrequirement,reliabilitycompliancetestneedstobecarriedout.Thepurposeofthisworkistodevelopreliabilitycompliancetestmethodsforacquisitionequipmentswithmultiplestressfactorsandmultiple
6、failuremodes.Firstly,reliabilitymodelofacquisitionequipmentswasestablished,whichisaseriesmodel.Anyfunctionalunitfails,theacquisitionequipmentwillfail.Failurecriteriaandmainfailuremodesweregiven.Then,tToshortenthetimeandreducethecost,temperatureandhumidityacceleratedlifetestingwasis
7、performed,usingtimecurtailedtest.Thestresslevels,samplenumberssize,acceleratedmodel,theminimumtesttimeandtestmethodwerearedetermined.Thelifedistributionparametersofseveralfailuremodesineachstresslevelareestimatedbasedontheleastsquaremethod,andthecumulativefailuredistributioninworki
8、ngconditionisderived.Final
