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时间:2020-03-28
《基于改进自由权矩阵与广义特征值的时滞稳定上限计算方法研究.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42卷第18期电力系统保护与控制vo1.42No.182014年9月16日PowerSystemProtectionandControlSep.16,2014基于改进自由权矩阵与广义特征值的时滞稳定上限计算方法研究马静,李俊臣,李益楠,王增平(1.新能源电力系统国家重点实验室(华北电力大学),北京1022062.国网陕西省电力公司电力科学研究院,陕西西安710054)摘要:提出了一种利用改进自由权矩阵与广义特征值(Genera1izedEigenvalueProblem,GEVP)判定系统时滞稳定上限的方法首先构造一类新的Lyapunov—Kr
2、asovskii泛函,并求解该泛函沿系统的导函数。然后,在导函数中加入必要的松散项以降低该方法保守性。在此基础上,利用gevp求解系统的时滞稳定上限。IEEE4机11节点系统和l6机68节点系统时域仿真结果验证了该方法能够有效求解电力系统所能承受的最大时滞。关键词:改进自由权矩阵;L-K泛函;时滞上限;广义特征值Researchontime-·delayupper-boundofpowersystemwide·-areadampingcontrollersbasedonimprovedfree-weightingmatricesandgenera
3、lizedeigenvalueproblemMAJing,LIJun.chen,LIYi-nan,WANGZeng-ping(1.StateKeyLaboratoryofAlternateElectricalPowerSystemwithRenewableEnergySources(NorthChinaElectricPowerUniversity),Beijing102206,China;2.ShaanxiElectricPowerResearchInstitute,StateGridShaanxiElectricPowerCompany,Xi
4、’an710054,China)Abstract:Amethodtodeterminethetime-delayupper-boundoftheexistingwide.areacontrolleroflowfrequencyoscillationbasedonimprovedfree—weightingmatrixandgeneralizedeigenvalueproblem(GEVP)isproposed.Firstly,anewclassofLyapunov—KrasovskiifunctionaIisconstructed.Secondl
5、y,thederivationfunctionalongthesystemissolved.Onthisbasis.necessary1ooseitemsateaddedtothederivationfunctioninordertoreducetheconservative。andasetofmatrix1inearinequalitiesisformed.Thentheupper-boundofdelaystabilofwide-areacontrollerissolvedbymeansofGEVP.Finally,thetime.domai
6、nsimulationoftheIEEE4-machine11-bustestsystemandIEEE16.machine68.bustestsystemdemonstratethatthemethodofsolvingtime.delaystabilityupper-boundofpowersystemwide-areacontrollerbasedonimprovedfree.weightingmatricescanbeappliedtodifierentcontrolmethodsanddifferenttypesofpowersyste
7、ms.ThisworkissupportedbyNationalBasicResearchProgramofChina(973Program)(No.2012CB215200).NationalNaturalScienceFoundationofChina(No.51277193),theChineseUniversityScientificFundProject(No.2014ZZD02).meScientificResearchFoundationfortheReturned0verseasChineseScholarsofStateEduc
8、ationMinistry([20l11No.1139),HebeiNaturalScienceFoundation(No.E20125
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