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时间:2020-03-28
《谐波电能分摊的合理计量方法.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第43卷第6期华北电力大学学报VoI.43.No.62016年11月JournalofNorthChinaElectricPowerUniversityNOV.,2016doi:10.3969/j.ISSN.1007—2691.2016.06.10谐波电能分摊的合理计量方法贾秀芳,佟子娟,曹东升,华回春(1.华北电力大学新能源电力系统国家重点实验室,河北保定071003;2.国网河南省电力公司检修公司,河南郑州450000)摘要:为了解决谐波条件下电能计量及其电费的合理分摊问题,对电能计量方法进行研究。首先分析了谐波
2、电能的产生及其对电能计量造成的影响,找出了导致电能不合理计量的原因,并以此为依据提出了一种新的电能计量方式。该计量方式有别于基波计量和全波计量,其优势是把负荷各自产生的谐波功率进行分摊,然后计算各个负荷的总电能。分摊谐波功率的关键是权重系数的计算,故采用自适应阻抗法,首先进行样本量的选取和分组,然后计算谐波阻抗,最后确定关注负荷的权重系数。利用实测数据,以5、7、9、l1谐波为例,对功率进行了处理前和处理后的对比,体现了功率分摊的合理性。并通过和以往方法的对比,体现了该计量方式的优越性。关键词:电能计量;权重系数;自
3、适应阻抗法中图分类号:TM714文献标识码:A文章编号:1007—2691(2016)06—0060—08lasonableMeasurementMethodofHarmonicEnergyAllocationJIAXiufang‘,TONGZijuan,CAODongsheng,HUAHuichun(1.StateKeyLaboratoryofAlternateElectricalPowerSystemwithRenewableEnergySources,NorthChinaElectricPowerUnivers
4、ity,Baoding071003,China;2.StateGridHenanElectricPowerCorporationMaintenanceCompany,Zhengzhou450000,China)Abstract:InordertOsolvetheproblemofelectricenergymeasurementandreasonableallocationofelectricitytarifunderharmoniccondition,thepaperstudiesthemethodofelectr
5、icitymeasurement.Firstofall,thepaperanalyzesthegenerationofharmonicpoweranditsinfluenceonelectricenergymeasurement.Thenthecauseofunreasonablemeas-urementofelectricenergycanbefound.Alsothispaperputsforwardanewmethodofelectricenergymeasurement.Themeasurementisdif
6、ferentfromthefundamentalwavemeasurementandfullwavemeasurement.Itsstrengthliesinsharingtheharmonicpowerofeachload,andthencalculatingthetotalpowerofeachload.Thekeytothismethodistocalculatetheweightcoefficient,SOastosharetheharmonicpowerbetweentheloads.Therefore,t
7、hepaperusestheself-adaptiveimpedancemethod.Firstly,thesamplesareselectedanddividedintodifferentgroups.Andthenthehar—monicimpedanceiscalculated.Finallytheweightcoefficientisdetermined.BasedOilthemeasureddata,thispapertakes5,9,7and11harmonicasexamplestocomparethe
8、differentvaluesofpower,whichdemonstratestherationalityofthepowerallocation.Theadvantageofthismeasurementcanbefoundwhencomparingwiththeformermethod.Keywords:energymeasurement
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