燕山大学电力系统课程设计

燕山大学课程设计说明书题目电力系统潮流、短路计算和暂态稳定分析（六）学院（系）电气工程学院年级专业10级电力4班学号100107010051学生姓名齐锦涛指导教师殷桂梁董海燕教师职称教授讲师电气工程学院课程设计任务书课程名称电力系统分析基层教学单位电力工程系指导教师殷桂梁学号100107010051学生姓名齐锦涛（专业）班级10级电力四班设计题目电力系统潮流、短路计算和暂态稳定性分析（六）设计技术参数某系统原始网络是一个5节点系统，网架结构和各节点功率如图1所示。未来的电源配置和负荷数据如图2所示。6号节点为新建的孤立节点。发电机参数如表1所示。各节点之间已建线路参数和可扩建的线路参数如表2所示。基准功率选为100MW，基准电压选为110KV。设计要求设计的供电网络应保证当系统中任一条线路发生故障时，各负荷均不断电。运用POWERWORLD软件计算出系统潮流分布和各母线短路时不同短路类型情况下的短路电流，并进行暂态稳定性分析。计算容许误差为105。最后将最终结果列表在报告中。参考资料夏道止，电力系统分析，中国电力出版社，2004年陈珩，电力系统稳态分析，中国电力出版社，1995年李光琦，电力系统暂态分析，中国电力出版社，1995年周次第一周应完成内容设计系统的接线形式，选择线路参数。对设计的电网结构进行静态安全分析，判断系统运行的薄弱环节。计算系统潮流分布，分析网络损耗。计算某一母线和线路不同短路类型情况下的短路电流，对比分析不同类型短路情况下对母线电压、线路电流和发电机的影响。进行暂态稳定性分析，确定系统在较严重事故情况下的临界切除故障时间，撰写课程设计报告、答辩。指导教师签字基层教学单位主任签字电气工程学院教务科目录第一章设计说明411设计技术参数412设计要求5第二章设计原理及分析621设计原理622应用POWERWORLD设计的原理图6第三章静态安全分析7第四章系统潮流分布及网络损耗841节点状态和支路参数842网络损耗9第五章短路分析1051节点短路10511单相接地10512相间短路12513三相对称13514两相接地1552线路短路16521单相接地16522相间短路18523三相对称19524两相接地2155不同短路类型对比分析22第六章暂态稳定性分析2361系统接入故障后稳定性分析2362临界切除故障时间32第七章心得体会34参考文献35第一章设计说明11设计技术参数1245360401060203台25WM1台50MW两台50MW612453240J15160J4040J10240J3080J0两台50MW两台125MW3台25WM1台50MW1台125MW2台200MW图1原网络结构图2新增发电厂和节点负荷表11各节点之间已有线路和可扩建线路参数支路交流电阻（PU）交流电抗（PU）原有线路数（回）可扩建线路数（回）交流容量（MW）长度（KM）1201204213904013010340410038140120631380601500602513100201601806204706823006026139020240110491310040250090340410031260070320490303401505304825935006026131002036013047041004845015061047563460098038049030支路交流电阻（PU）交流电抗（PU）原有线路数（回）可扩建线路数（回）交流容量（MW）长度（KM）56012062047861表12发电机组参数发电机型号额定容量MW电抗标幺值DX惯性时间常数HS阻尼系数QFS200220002461110480QFS125212502571193360QFS5025003931415232QFS2522501961139157基准功率为100MW，基准电压为110KV。12设计要求1、设计的供电网络应保证当系统中任一条线路发生故障时，各负荷均不断电。2、运用POWERWORLD软件计算出系统潮流分布和各母线短路时不同短路类型情况下的短路电流，并进行暂态稳定性分析。3、设计系统的接线形式，选择线路参数。对设计的电网结构进行静态安全分析，判断系统运行的薄弱环节。计算系统潮流分布，分析网络损耗。计算某一母线和线路不同短路类型情况下的短路电流，对比分析不同类型短路情况下对母线电压、线路电流和发电机的影响。进行暂态稳定性分析，确定系统在较严重事故情况下的临界切除故障时间。4、计算容许误差为510，最后将最终结果列表在报告中。第二章设计原理及分析21设计原理根据设计要求，需保证任意一条线路出现故障时，每个负荷均不断电，因此必须保证每个节点处同时至少连接两条线路，设计采用环网结构，根据各负荷的功率分布，让发电机自动调整对负荷提供有功和无功功率。其中，有一个发电机处于平衡节点，对整个电网的功率进行平衡。首先在符合要求下适当的在各节点间连接少量的线路。如果线路中的饼图信息变红或不能对负载供电，则对设计网络再进行修改，先考虑线路连接情况，再看导线选择是否合理，直到运行时平衡系统功率并保证任一线路出现故障时，其他线路的饼图信息均不变红。这时，可以进行短路计算和暂态稳定性分析。22应用POWERWORLD软件设计的原理图第三章静态安全分析安全分析，是用预想事故的分析方法来预知系统是否存在安全隐患，以便及早采取相应的措施防止系统发生大的事故。静态安全分析可判断发生预想事故后系统是否会过负荷或电压越限。运用POWERWORLD软件静态安全分析功能，插入事故单个线路事故共17个后，开始运行，得到结果如下表表31静态安全分析结果由表可知，6号母线为系统较薄弱环节，当线路发生断路故障时，易发生支路越限。第四章系统潮流分布及网络损耗41节点状态和支路参数运用POWERWORLD软件运行实例，查看实例信息等到如下表的节点状态和支路参数，见下各表表41节点状态情况标签跳过已处理已求解越限最大支路越限最低电压最高电压最大断面L_000011000022C1NOYESYES0L_000011000044C1NOYESYES0L_000055000011C1NOYESYES0L_000033000022C4NOYESYES0L_000033000022C2NOYESYES0L_000033000022C3NOYESYES0L_000022000044C1NOYESYES0L_000022000066C2NOYESYES1110L_000022000066C4NOYESYES1110L_000055000033C1NOYESYES0L_000055000033C2NOYESYES0L_000055000033C3NOYESYES0L_000033000066C1NOYESYES21016L_000044000066C1NOYESYES0L_000044000066C2NOYESYES0L_000044000066C3NOYESYES0L_000055000066C3NOYESYES0编号名称区域名称基准电压标幺电压实际电压相角度有功负荷无功负荷发电机有功发电机无功并联补偿器无功节点并联补偿实际有功节点并联补偿实际无功111110103111340378001004844000221110101111101324015000331110102411260854010300145300044111009791077055160400005511101016111806824030000661110111034367268000表42支路参数情况首端节点编号首端节点名称末端节点编号末端节点名称回路状态RXB极限AMVA极限BMVA极限CMVA11221CLOSED0039670138840900011441CLOSED00595031240800055111CLOSED00099200413201000033222CLOSED0009920042980900033223CLOSED0009920042980900033224CLOSED0009920042980900022441CLOSED00363601619801000022662CLOSED0017360079340900022664CLOSED0017360079340900055331CLOSED00099200429801000055332CLOSED00099200429801000055333CLOSED00099200429801000033661CLOSED0017360079340900044661CLOSED002430094210900044662CLOSED002430094210900044663CLOSED002430094210900055663CLOSED006050312560780042网络损耗计算后，得到网络损耗如下表表43网络损耗情况首端节点编号首端节点名称末端节点编号末端节点名称回路状态有功首端节点无功首端节点视在功率首端节点视在功率极限视在功率极限最大值有功损耗无功损耗11221CLOSED18164165901830103611441OPEN0008000055111CLOSED21731538210038801405933224CLOSED3652614499049901908333222CLOSED3652614499049901908333223CLOSED3652614499049901908322441CLOSED0219319310019301305922662CLOSED6632887239080408940722664CLOSED6632887239080408940755331CLOSED657296581006630421855332CLOSED657296581006630421855333CLOSED657296581006630421833661CLOSED484286439071506831344661CLOSED534715399061207428644662CLOSED534715399061207428644663CLOSED534715399061207428655663CLOSED21210123578301032167第五章短路分析51节点短路运用POWERWORLD软件运行实例，在节点1处设置短路故障，并进行仿真计算。短路故障分别为单相接地短路、相间短路、三相对称短路和两相接地短路，计算结果如下511单相接地表51各节点相电压、相角情况编号名称相电压A相电压B相电压C相角A相角B相角C110126142095822012166133142202910112035408967910721183913005330303971212840912641171117691304440300861174190871451298117951304255022611220109087845119761302660348571177908917317921149113219表52各发电机相电流、相角情况编号节点名称节点相电流A相电流B相电流C相角A相角B相角C111225680366140270257481107752461112256803661402702574811077524611122568036614027025748110775246331510950990521020265149135718523315109509905210202651491357185233151095099052102026514913571852661215951256051092561759774129186612159512560510925617597741291866121595125605109256175977412918表53各线路相电流情况512相间短路首端节点编号首端节点名称末端节点编号末端节点名称回路相电流A首端节点相电流B首端节点相电流C首端节点相电流A末端节点相电流B末端节点相电流C末端节点11221138357002548018782138357002548018782114410633610082110157790633610082110157795511136670303412603214536670303412603214533224029074038617040095029074038617040095332220290740386170400950290740386170400953322302907403861704009502907403861704009522441006654014170154830066540141701548322662068718070859062863068718070859062863226640687180708590628630687180708590628635533113089706021206174313089706021206174355332130897060212061743130897060212061743553331308970602120617431308970602120617433366105522705993805658105522705993805658144661048174054860470770481740548604707744662048174054860470770481740548604707744663048174054860470770481740548604707755663029923022034020898029923022034020898表54各节点相电压、相角情况编号名称相电压A相电压B相电压C相角A相角B相角C1110235505117705117702217978179782210076304541406288201615435162063310214604654806371409153011621744098189043132063268049151816201551012310461790596570621612716451661044099066406341452816321表55各线路相电流情况首端节点编号首端节点名称末端节点编号末端节点名称回路相电流A首端节点相电流B首端节点相电流C首端节点相电流A末端节点相电流B末端节点相电流C末端节点11221011992154711145659011992154711145659114410136807683506707701368076835067077551110313023946739890303130239467398903332240432470354010190820432470354010190823322204324703540101908204324703540101908233223043247035401019082043247035401019082224410158890181800234501588901818002345226620705090886270462560705090886270462562266407050908862704625607050908862704625655331064838151522108298064838151522108298553320648381515221082980648381515221082985533306483815152210829806483815152210829833661060338081041036206033808104103624466105494705189203514505494705189203514544662054947051892035145054947051892035145446630549470518920351450549470518920351455566302252803996021670225280399602167表56各发电机相电流、相角情况编号节点名称节点相电流A相电流B相电流C相角A相角B相角C110362051203420933142611170512254110362051203420933142611170512254110362051203420933142611170512254331087771662861160122494160945973310877716628611601224941609459733108777166286116012249416094597661244481485560839791399131610528661244481485560839791399131610528661244481485560839791399131610528513三相对称表57各节点相电流、相角情况编号名称相电压A相电压B相电压C相角A相角B相角C11000000220250320250320250322582941814582330259402594025942526947414526440263650263650263652904909614904550194550194550194552419591441660300510300510300513167883315167表58各发电机相电流、相角情况编号节点名称节点相电流A相电流B相电流C相角A相角B相角C111225681225681225687481165194519111225681225681225687481165194519111225681225681225687481165194519331531751531751531745441744656331531751531751531745441744656331531751531751531745441744656661193811193811193812171141719829661193811193811193812171141719829661193811193811193812171141719829表59各线路相电流情况514两相接地表510各节点相电压、相角情况首端节点编号首端节点名称末端节点编号末端节点名称回路相电流A首端节点相电流B首端节点相电流C首端节点相电流A末端节点相电流B末端节点相电流C末端节点1122117336173361733617336173361733611441082903082903082903082903082903082903551114578194578194578194578194578194578193322402132602132602132602132602132602132633222021326021326021326021326021326021326332230213260213260213260213260213260213262244101182601182601182601182601182601182622662070751070751070751070751070751070751226640707510707510707510707510707510707515533114739147391473914739147391473955332147391473914739147391473914739553331473914739147391473914739147393366106354906354906354906354906354906354944661040153040153040153040153040153040153446620401530401530401530401530401530401534466304015304015304015304015304015304015355663034762034762034762034762034762034762编号名称相电压A相电压B相电压C相角A相角B相角C111182950066500221103890204230318467841077714206331115180218960327128331082142684410753020938033445828103681441755112331015693024864710969139996610824402516203772610711012214867表511各线路相电流情况首端节点编号首端节点名称末端节点编号末端节点名称回路相电流A首端节点相电流B首端节点相电流C首端节点相电流A末端节点相电流B末端节点相电流C末端节点1122100751613723817902900751613723817902911441009206564708420200920656470842025511100613135380148017500613135380148017533224035016032665018903501603266501893322203501603266501890350160326650189332230350160326650189035016032665018922441013721013066007643013721013066007643226620644107451065922064410745106592222664064410745106592206441074510659225533105735413815414286805735413815414286855332057354138154142868057354138154142868553330573541381541428680573541381541428683366105687106487905618605687106487905618644661047862046553042020478620465530420244662047862046553042020478620465530420244663047862046553042020478620465530420255663020659033614032191020659033614032191表512各发电机相电流、相角情况编号节点名称节点相电流A相电流B相电流C相角A相角B相角C11018427122568122568245165194519110184271225681225682451651945191101842712256812256824516519451933092139158716146834241217289666433092139158716146834241217289666433092139158716146834241217289666466112695127168114606189614117101366611269512716811460618961411710136661126951271681146061896141171013652线路短路521单相接地表513各节点相电压、相角情况编号名称相电压A相电压B相电压C相角A相角B相角C1103700311855909512815112014128212203848111762609345450511983129143304387117824094294606118581288544042596113988090121653118861288155041766117438093113303120061276966044764050224060501801807FAULTPT00715660714710180180表514各线路相电流情况首端节点编号首端节点名称末端节点编号末端节点名称回路相电流A首端节点相电流B首端节点相电流C首端节点相电流A末端节点相电流B末端节点相电流C末端节点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表515各发电机相电流、相角情况编号节点名称节点相电流A相电流B相电流C相角A相角B相角C110870520323860304226905119526751110870520323860304226905119526751110870520323860304226905119526751331415491019041017664751137258743314154910190410176647511372587433141549101904101766475113725874661203161267531111511198993513084661203161267531111511198993513084661203161267531111511198993513084522相间短路表516各节点相电流、相角情况编号名称相电压A相电压B相电压C相角A相角B相角C1110235505286706136702215166155462210076305005406449016147261554533102146052219067340914305153764409818904903406628304914213153815510123105174706532206214636152896609982403685606296701801807FAULTPT1015590507790507790180180表517各线路相电流情况首端节点编号首端节点名称末端节点编号末端节点名称回路相电流A首端节点相电流B首端节点相电流C首端节点相电流A末端节点相电流B末端节点相电流C末端节点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表518各发电机相电流、相角情况编号节点名称节点相电流A相电流B相电流C相角A相角B相角C110361940946240683926121707627071103619409462406839261217076270711036194094624068392612170762707331087771567081114162494159636432331087771567081114162494159636432331087771567081114162494159636432661244481433150872971399128791107866124448143315087297139912879110786612444814331508729713991287911078523三相对称表519各节点相电压、相角情况编号名称相电压A相电压B相电压C相角A相角B相角C110296930296930296931041109591304122032535032535032535170910291137093303692036920369216971030313697440363070363070363071929100711392955034842034842034842144510555134456603578200483503094701801807FAULTPT000000表520各线路相电流情况首端节点编号首端节点名称末端节点编号末端节点名称回路相电流A首端节点相电流B首端节点相电流C首端节点相电流A末端节点相电流B末端节点相电流C末端节点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表521各发电机相电流、相角情况编号节点名称节点相电流A相电流B相电流C相角A相角B相角C110930090930090930097329166714671110930090930090930097329166714671110930090930090930097329166714671331438851438851438855155171556845331438851438851438855155171556845331438851438851438855155171556845661166651166651166651692136921030866116665116665116665169213692103086611666511666511666516921369210308524两相接地表522各节点相电压、相角情况编号名称相电压A相电压B相电压C相角A相角B相角C11110806028446036903534123941330122109682028814040353597115841362331097640334140454465711572136884410575703163604511364811351377355109099031381043312528118971343366105670115690376801801807FAULTPT12004900000表523各线路相电流情况首端节点编号首端节点名称末端节点编号末端节点名称回路相电流A首端节点相电流B首端节点相电流C首端节点相电流A末端节点相电流B末端节点相电流C末端节点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表524各发电机相电流、相角情况编号节点名称节点相电流A相电流B相电流C相角A相角B相角C11023192096143085701200817075461211023192096143085701200817075461211023192096143085701200817075461233095949150688136021239516956697933095949150688136021239516956697933095949150688136021239516956697966115784125564111673180813651106866115784125564111673180813651106866115784125564111673180813651106853不同短路类型对比分析1、单相接地取A相为特殊相，故障线路相电压为零，相角为零2、相间短路B、C相直接短路，B相电压等于C相电压3、三相对称三相相电压相等，故障线路电压为零4、两相接地B、C相直接短路再接地，B相电压等于C相电压且均为零，相角为零由表可知，软件计算结果与理论值相符。第六章暂态稳定性分析61系统接入故障后稳定性分析暂态稳定性是指电力系统受到大干扰后，各同步电机保持同步运行并过渡到新的或回复到原来稳态运行方式的能力。在10000S插入故障，在系统稳定时刻进行稳定性分析，选取T13300S时刻，用POWERWORLD软件进行暂态稳定计算，得到如下曲线图61节点1处发电机1转速与角度关系曲线GEN11SPEEDDEVIATIONRAD/SGEN11SPEEDDEVIATIONRAD/SGEN11ROTORANGLEDEG151050510GEN11SPEEDDEVIATIONRAD/S43210图62节点1处发电机2转速与角度关系曲线GEN12SPEEDDEVIATIONRAD/SGEN12SPEEDDEVIATIONRAD/SGEN12ROTORANGLEDEG25201510505GEN12SPEEDDEVIATIONRAD/S3210图63节点3处发电机1转速与功角关系曲线GEN31SPEEDDEVIATIONRAD/SGEN31SPEEDDEVIATIONRAD/SGEN31ROTORANGLEDEG20151050GEN31SPEEDDEVIATIONRAD/S3210图64节点3处发电机2转速与功角关系曲线GEN32SPEEDDEVIATIONRAD/SGEN32SPEEDDEVIATIONRAD/SGEN32ROTORANGLEDEG26242220181614121086GEN32SPEEDDEVIATIONRAD/S3210图65节点6处发电机1转速和功角关系曲线GEN61SPEEDDEVIATIONRAD/SGEN61SPEEDDEVIATIONRAD/SGEN61ROTORANGLEDEG302826242220181614GEN61SPEEDDEVIATIONRAD/S3210图66节点6处发电机2转速和功角关系曲线GEN62SPEEDDEVIATIONRAD/SGEN62SPEEDDEVIATIONRAD/SGEN62ROTORANGLEDEG30282624222018161412GEN62SPEEDDEVIATIONRAD/S3210图67节点1处发电机1，2时间与转速关系曲线TRANSIENTSTABILITYTIMESTEPRESULTSVARIABLESGEN11SPEEDDEVIATIONRAD/SGEN12SPEEDDEVIATIONRAD/STIMEINSECONDS109876543210VALUES43210图68节点1处发电机1、2时间与功角关系曲线TRANSIENTSTABILITYTIMESTEPRESULTSVARIABLESGEN11ROTORANGLEDEGGEN12ROTORANGLEDEGTIMEINSECONDS109876543210VALUES2624222018161412108642024681012图69节点1处发电机1，2时间与功率关系曲线TRANSIENTSTABILITYTIMESTEPRESULTSVARIABLESGEN11MWGEN12MWTIMEINSECONDS109876543210VALUES12010080604020020406080图610节点1处发电机1，2时间与电压关系曲线TRANSIENTSTABILITYTIMESTEPRESULTSVARIABLESGEN11TERMPUGEN12TERMPUGEN13TERMPUTIMEINSECONDS109876543210VALUES10图611节点3处发电机1，2时间与转速关系曲线TRANSIENTSTABILITYTIMESTEPRESULTSVARIABLESGEN31SPEEDDEVIATIONRAD/SGEN32SPEEDDEVIATIONRAD/STIMEINSECONDS109876543210VALUES3210图612节点3处发电机1，2时间与功角关系曲线TRANSIENTSTABILITYTIMESTEPRESULTSVARIABLESGEN31ROTORANGLEDEGGEN32ROTORANGLEDEGTIMEINSECONDS109876543210VALUES262422201816141210864202图613节点3处发电机1，2时间与功率的关系曲线TRANSIENTSTABILITYTIMESTEPRESULTSVARIABLESGEN31MWGEN32MWTIMEINSECONDS109876543210VALUES20019018017016015014013012011010090807060504030201001020图614节点3处发电机1，2时间与电压关系曲线TRANSIENTSTABILITYTIMESTEPRESULTSVARIABLESGEN31TERMPUGEN32TERMPUGEN33TERMPUTIMEINSECONDS109876543210VALUES10950908508075070650605505045图615节点6处发电机1，2时间与转速关系曲线TRANSIENTSTABILITYTIMESTEPRESULTSVARIABLESGEN61SPEEDDEVIATIONRAD/SGEN62SPEEDDEVIATIONRAD/STIMEINSECONDS109876543210VALUES3210图616节点6处发电机1，2时间与功角关系曲线TRANSIENTSTABILITYTIMESTEPRESULTSVARIABLESGEN61ROTORANGLEDEGGEN62ROTORANGLEDEGTIMEINSECONDS109876543210VALUES3130292827262524232221201918171615141312图617节点6处发电机1，2时间与功率关系曲线TRANSIENTSTABILITYTIMESTEP