配电网实时潮流算法-改进迭代法

*(山东大学电气工程学院济南250061)提出了配电网实时潮流计算方法.以前推回代潮流迭代算法为理论基础.对算法的收敛速度算法的稳定性和实用化程度进行了研究.计算结果表明,该算法能够利用实测节点冗余的测量数据对网络中负荷预测数据进行修改,提高其准确度,进而得到趋于真实合理的潮流分布.城市配电;迭代法;潮流分析TM7110引言,,.,,.,,,.R/X,,.,SCADA,.,,.2090,,,[1],[2],[3].,,.,,,,,:2001-10-19*,,,1963,.,,,1964,.,,,1967,.200112316JOURNALOFSHANDONGUNIVERSITYOFTECHNOLOGYVol.31No.6Dec.2001,.10kV,,,.1数学模型1.1,,.11,:Sij-s=Sij-m+Sij(1)Sij-m=Sjo+Sjk-s+Sjl-s(2)Sij=Pij+jQij=P2ij-m+Q2ij-mU2j(Rij+jXij)(3)Uj=Ui-Uij(4)Uij=Pij-sRij+Qij-sXijUi+jPij-sXij-Qij-sRijUi(5)(1)~(5).Ui,Ujij;Rij,Xijij;Sij-sSij-mij;Sjoj.1.2,.,,.,,:Kp(t+1)=1+(P0-Ps-P)-P(t)yP(t)y(6)Kq(t+1)=1+(Q0-Qs-Q)-Q(t)yQ(t)y(7)(6)(7):Po,Qo,Ps,Qs,Py,Qy,P,Q,t.5242001P(t+1)i=K(t+1)pP(t)i(8)Q(t+1)i=K(t+1)qQ(t)i(9),,i=1+ri,ri.:P(t+1)i=iK(t+1)pP(t)i(10)Q(t+1)i=iK(t+1)qQ(t)i(11)1.3,,.,,,,.,.2计算方法与步骤.;,..,,.:(1),.(2)t=0.(3).(1)~(3),Uj(t),.Uj(t)t.(4),.(5).(6).maxU(t+1)i-U(t)i(12)=10-5.(12),.3实例计算C++,IEEE33,=10-5,4.,,,S0=2100+j1250kVA,U0=10.3kVA,=10-5,8.1.6:525133ij///kWPQ/kWPQ/kV/rad010.09220.047050.0*30.0*50.000030.000010.27550.0002120.49300.251145.020.051.166221.564710.15920.0011230.36600.186460.0*40.0*60.000040.000010.09770.0018340.38110.194130.015.034.110816.173610.03660.0026450.81900.707030.0*10.0*30.000010.00009.88580.0010560.18720.6188100.050.0113.702653.91199.8569-0.0023670.71440.2351100.050.0113.702653.91199.8161-0.0019781.03000.740030.010.034.110810.78249.7640-0.0030890.04400.740030.010.034.110810.78249.7508-0.00569100.19660.065022.515.025.583116.17369.7436-0.005510110.37440.123830.017.534.110818.86929.7313-0.005411121.46801.155030.017.534.110818.86929.6814-0.006712130.54160.712960.0*40.0*60.000040.00009.6632-0.007813140.59100.526030.0*5.0*30.00005.00009.6514-0.008314150.74630.545030.010.034.110810.78249.6398-0.008715161.28901.721030.010.034.110810.78249.6226-0.009916170.73200.574045.020.051.166221.56479.6175-0.01001180.16400.156545.020.051.166221.564710.2710-0.000018191.50421.355445.020.051.166221.564710.2410-0.001019200.40950.478445.0*20.0*45.000020.000010.2352-0.001320210.70890.937345.020.051.166221.564710.2297-0.00162220.45120.308345.025.051.166226.955910.12960.000622230.89800.7091210.0100.0238.7755107.823810.0749-0.000723240.89600.7011210.0*100.0*210.0000100.000010.0492-0.00135250.20300.103430.012.534.110813.47809.87020.001525260.28420.144730.012.534.110813.47809.84960.002226271.05900.933730.010.034.110810.78249.75850.003127280.80420.700660.035.068.221637.73839.69340.004028290.50750.2585100.0*300.0*100.0000300.00009.66540.005329300.97440.963075.035.085.277037.73839.63170.004230310.31050.3619105.0*50.0*105.000050.00009.62450.003931320.34100.530230.020.034.110821.56479.62210.0038:*52620014结论,,,.,,,SVADA/DMS.1GoswamiSK,BasuSK.ANewAlgorithmfortheReconfigurationofDistributionFeedersforLossMinim-igation[J].IEEETrans.OnPowerDelivery,1992,7(3):1487~14912GoswamiSK,BasuSK.Directsolutionofdistributionsystem[J].IEEProc-C,1991,138(1):78~88.3,.[J].,1998,22(4):45~49.AREAL-TIMELOADFLOWCALCULATIONMETHODFORDISTRIBUTIONNETWORKIMPROVEDITERATIONMETHODZhangBoDongJieLiZhongshi(School.ofElect.Eng.ShandongUniv.,Jinan250061)ABSTRACTAPowerdistributionratioalgorithmofrea-ltimeloadflowcalculationispresented.SothattheForwardandBackwardUpdatingpowerflowsolutionfordistributionnetworkcanbeeasilydeveloped.Thecalculationresultshowsthatthisalgorithmcanrevisetheloadforecastdataandimproveaccuracybyuseofredundantrea-ltimemeasurements,sothatamorereasonablepowerflowdistributioncanbeobtained.KEYWORDSCitydistributionnetwork;Iterationmethod;Tidalcurrentanalysis6:527