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1、第xx卷第xxx期电测与仪表Vol.xxNo.xxx2016年第xx期ElectricalMeasurement&InstrumentationDec.2016动态相量测量算法等效滤波器研究*裴茂林1,汪芙平2,黄松岭2,赵伟2,单鹏1,刘明1,许继和3(1.国网江西省电力有限公司电力科学研究院,南昌330096;2.,清华大学电力系统及发电设备控制和仿真国家重点实验室,北京100084;3.国网江西省电力有限公司,南昌330006)摘要:指出实现动态相量测量的DPEA、DPEFM和TFDPE算法本
2、质上可视为线性非时变(LTI)系统,推导出各系统等效数字滤波器的表达式,并给出算法的扩展形式。基于滤波器频响特性定义一组技术指标,并建立其与基波扰动、谐波、噪声和衰减直流各因素产生测量误差的对应数量关系。由此,一方面基于滤波器频响特性对测量算法综合性能进行便捷有效的评估,另一方面基于技术指标对扩展算法进行优化,设计出具有最佳频响特性的测量算法。针对P类性能要求,给出了数据窗长为2个和3个周波优化设计结果。技术指标和仿真实验结果表明,在相同数据长度下,优化算法相比原算法在综合性能上有大幅提升,特别是具
3、有了非常强的抗直流干扰能力。关键词:同步相量测量;动态相量;FIR滤波器;滤波器设计中图分类号:TM76文献标识码:B文章编号:1001-1390(2019)03-0000-00StudyofequivalentfiltersofdynamicsynchrophasorestimatorsmeasurementalgorithmPeiMaolin1,WangFuping2,HuangSonglin2,ZhaoWei2(1.ElectricPowerResearchInstituteofStateGr
4、idJiangxiElectricPowerCompany,Nanchang330069,China.2.StateKeyLaboratoryofPowerSystemandGenerationEquipment,,TsinghuaUniversity,Beijing100084,China.3.StateGridJiangxiElectricPowerCompany,Nanchang330006,China)Abstract:Agroupofdynamicphasormeasurementalgo
5、rithms,includingdynamicsynchrophasorestimationalgorithm(DPEA),dynamicphasorestimatorbasedonfrequency-domainmodel(DPEFM)andtime-frequencyinformation-baseddynamicphasorestimator(TFDPE),arerevealedtobelineartime-invariant(LTI)systems,andtheexpressionsofth
6、eirequivalentfiltersarederived.Inaddition,thesealgorithmsareextendedtomoregeneralizedformsinthesenseoffilterequivalence.Agroupoffilterspecificationsaredefinedbasedonthefrequencyresponseoftheequivalentfilter,andthequantitativerelationsarebuiltbetweenthe
7、sefilterspecificationsandthemeasurementerrorscausedbynon-nominalfundamentaltone,harmonics,decayingDC,andwidebandnoise.Intermsoftheserelations,ontheonehand,themeasurementperformanceofthesealgorithmsareconvenientlyevaluatedandcomparedbasedontheirfrequenc
8、yresponse;ontheotherhand,filteroptimizationisformulatedtodesignoptimumfilterssothatthealgorithmsachievethebestoverallmeasurementperformance.OptimizationresultsofP-classalgorithmarepresentedinthecasesof2-cycleand3-cycledatalength.Filters