基于OPNET的保护性能评估及采样值估计算法翟博龙1,唐志军1,宋福海2,龙云波3(1.国网福建省电力有限公司电力科学研究院,福州350007;2.国网福建省电力有限公司,福州350003;3.华北电力大学新能源电力系统国家重点实验室,北京102206)摘要:近来智能变电站数字继电保护技术快速发展,构建信息交互通道可进一步提高保护性能。文中对IEC61850过程总线在110kV/35kV变电站以太网交换环结构中的性能进行评价,并利用OPNET对过程总线上采样数据报文性能进行评估。为了减轻采样值丢失和延迟对数字中继算法的影响,提出了采样值估计的修正措施,并提出了一种采样值估计算法。最后利用PSCAD/EMTDC和MATLAB对该算法进行了仿真验证,结果表明提出的算法精度高、计算量少,可用于任何数字保护功能。关键词:数字继电保护;采样值估计;IEC61850;智能变电站;性能评价DOI:10.19753/j.issn1001-1390.2023.04.024中图分类号:TM711文献标识码:A文章编号:1001-1390(2023)04-0160-07OPNET-basedprotectionperformanceevaluationandsamplingvalueestimationalgorithmZhaiBolong1,TangZhijun1,SongFuhai2,LongYunbo3(1.ElectricPowerResearchInstituteofStateGridFujianElectricPowerCo.,Ltd.,Fuzhou350007,China.2.StateGridFujianElectricPowerCo.,Ltd.,Fuzhou350003,China.3.StateKeyLaboratoryofAlternateElectricalPowerSystemwithRenewableEnergySources,NorthChinaElectricPowerUniversity,Beijing102206,China)Abstract:Withtherapiddevelopmentofdigitalrelayprotectiontechnologyinsmartsubstation,theconstructionofinforma-tioninteractionchannelcanfurtherimprovetheprotectionperformance.Inthispaper,theperformanceofIEC61850processbusin110kV/35kVsubstationEthernetswitchringstructureisevaluated,andtheperformanceofsamplingdatamessageonprocessbusisevaluatedbyOPNET.Inordertoreducetheimpactofthelossanddelayofthesamplevalueonthedigitalrelayalgorithm,acorrectionmeasureforthesamplevalueestimationisproposed,aswellasasamplevalueestimationalgo-rithm.Finally,PSCAD/EMTDCandMATLABareusedtosimulateandverifytheproposedalgorithm.Theresultsshowthattheproposedalgorithmhashighaccuracyandlesscomputation,whichcanbeusedforanydigitalprotectionfunction.Keywords:digitalrelayprotecti...