电力系统课程设计.doc

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性分析（一）学院（系）： 电气工程学院 年级专业： 10级电力系统及其自动化2班 学 号： 100103030068 学生姓名： 闫桂红 指导教师： 王珺 董杰 教师职称： 讲师 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： 王珺 董杰 学号100103030068学生姓名闫桂红（专业）班级电力2班设计题目电力系统潮流、短路计算和暂态稳定性分析（一）设计技术参数某系统由三个发电厂和三个负荷点组成，如图所示。输电系统电压等级为110kV，负荷额定功率标示如图。节点2-4距离为50km，2-6为80km，2-7为35km，2-8为60km，2-9为30km，4-6为30km，4-7为40km，4-8为30km，4-9为55km，6-7为50km，6-8为30km，6-9为20km，7-8为45km，7-9为50km，8-9为65km。可选导线型号和单位长度导线参数如表所示。变压器电抗为标么值，基准功率为100MW，基准电压为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Power World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说明：任务书要求装订到课程设计报告前面。电气工程学院院 教务科目 录第1章 设计说明 4 1.1 设计技术参数 4 1.2 设计要求 4第2章 设计原理及分析 4 2.1 设计原理 4 2.2 应用PowerWorld设计的原理图5第3章 静态安全分析 5第4章 系统潮流分布及网络损耗 6 4.1 负荷与节点参数 6 4.2 线路及发电机参数 6第5章短路电流及短路故障 8 5.1 节点短路 8 5.2 线路短路 12 第6章 暂态稳定性分析 16第7章 心得体会 22参考文献 22 第1章设计说明11设计技术参数发电机参数：G1：SN=150MVA，H=9.36s，D=10.0G2：SN=80MVA，H=5.24s，D=3.8G3：SN=100MVA，xd=0.19， H=5.24S，D=3.8导线型号r1(/km)x1(/km)b110-6(S/km)LGJ-700.4500.4402.58LGJQ-6000.0520.4152.72其中，7-8、8-9之间用LGJQ-600型号的导线，其余线路用型号为LGJ-70的导线。12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Power World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。第2章 设计原理及分析2.1 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，当一条线路断开时发电机可过另一条线路给负荷供电，设计如下图。22应用POWER WORLD软件设计的原理图第3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。单个节点故障标签跳过已处理已求解越限最低电压最高电压L_000077-000022C1NOYESYES0L_000099-000022C1NOYESYES30.868L_000077-000044C1NOYESYES11.116L_000044-000088C1NOYESYES0L_000088-000066C1NOYESYES0L_000099-000066C1NOYESYES0L_000077-000088C1NOYESYES0L_000099-000088C1NOYESYES0 当插入节点短路故障时，线路1-9电压过低，线路4-7电压过高,此处即为薄弱环节。第4章系统潮流计算1、 节点编号基准电压标幺电压实际电压有功负荷无功负荷发电机有功发电机无功1110111015.9990.16-1.221101.0547116.017-18.930.531101.08437119.281-19.6140841101.02625112.888-20.765151100.99042108.946-19.59501561101.03471113.819-21.111.50.371101.01072111.179-21.8350581101.00785110.864-22.0945591101.00802110.882-21.817072、负荷编号节点状态有功无功视在功率恒功率有功负荷恒功率无功负荷2Closed30.53.0430.54Closed515.1516Closed1.50.31.531.50.37Closed50550.255058Closed45545.284559Closed70770.357073、 发电机编号节点状态有功出力无功出力设定电压AGCAVR1Closed90.16-1.21NOYES3Closed4081NONO5Closed50151NONO4、变压器控制首端节点编号 末端节点编号回路变比调节误差最小调节量最大调节量最小变比最大变比档距1210.95-0.510.511.50.511.50.006254310.95-0.510.511.50.511.50.006255610.95-0.510.511.50.511.50.006255、支路参数首端节点编号末端节点编号状态是否变压器RXB极限A MVA43ClosedYes00.05860012ClosedYes00.06250056ClosedYes00.0570074ClosedNo0.017180.137150.013210078ClosedNo0.019320.154280.014810098ClosedNo0.027890.222760.021410096ClosedNo0.074370.072730.006210048ClosedNo0.111530.109090.009310092ClosedNo0.111530.109090.009410086ClosedNo0.111530.109090.009310072ClosedNo0.130110.127270.01081006、支路状态首端节点 末端节点是否变压器有功 首端节点无功 首端节点视在功率 首端节点视在功率极限%视在功率极限有功损耗无功损耗92No-45.23.845.310047.52.261.2143Yes-40-7.240.60000.8372No-37.94.338.110039.91.860.6696No-27.1-9.528.710029.20.6-0.0686No-20.4-4.320.810021.20.47-0.5174No-15.3-10.118.410018.40.05-0.9398No2.2-1.32.61002.60-2.1678No3.20.73.31003.90-1.4948No19.6-319.810019.80.41-0.5656Yes501552.20001.4312Yes90.2-1.290.20004.59第5章 短路分析51节点短路计算节点1.单相接地短路分析：对母线电压的影响：编号相电压 A相电压 B相电压 C50.36734-30.551.12469-136.710.87925106.0710000000.001.15306-137.050.95299112.6540.37747-32.871.15707-137.30.90479104.1080.30968-36.351.15774-139.460.89336104.4790.25105-40.011.17259-139.930.90113106.0270.27487-43.361.17493-139.440.89444105.6860.35318-36.831.1819-137.880.90916104.7430.43444-28.311.21555-136.460.96513105.0720.09304-171.22577-139.610.99467110.11对线路电流的影响：首节点-末节点回路是否变压器相电流 A 相电流 B 相电流 C 9-81No0.18622-0.180560.03107-0.03590.0322-0.025458-61No0.20973-0.207760.18913-0.189020.1852-0.180977-81No0.21623-0.213370.05139-0.054030.01436-0.017354-81No0.31594-0.31730.16751-0.162860.17103-0.173767-41No0.59416-0.590690.13003-0.126260.18837-0.177929-61No0.70904-0.707970.22547-0.224470.28383-0.279997-21No0.74047-0.742310.39325-0.396110.32601-0.325119-21No0.7453-0.746810.46512-0.467770.37633-0.374844-31Yes0.8931-0.848450.3234-0.307230.36877-0.350335-61Yes0.96984-0.921350.44861-0.426180.49603-0.471231-21Yes1.56702-1.488670.93767-0.890780.75984-0.72185对发电机电流的影响：编号 节点相电流 A相电流 B相电流 C11.33755-63.610.93767-125.860.75984100.5530.84845-78.80.30723-129.190.3503366.3350.96984-73.250.44861-141.970.4960367.85节点1相间短路分析：对母线电压的影响：编号相电压 A相电压 B相电压 C11.0000-15.990.49999164.010.49999164.0121.0547-18.900.50846170.620.55957152.4731.08437-19.610.63553-169.390.62352129.5241.02625-20.760.59546-174.190.5609130.9050.99042-19.590.57264-171.140.55814131.1561.0347-21.110.59799-176.480.55068131.9971.01072-21.830.56898178.130.51404135.9781.00785-22.090.56212-178.590.54102133.4291.00801-21.810.54929177.860.52444137.54对线路电流的影响：首节点-末节点回路是否变压器相电流 A 相电流 B 相电流 C 9-81No0.02546-0.023680.16507-0.162340.18863-0.182847-81No0.03267-0.038770.21137-0.214120.23276-0.226277-41No0.18158-0.174460.59587-0.594320.48511-0.479534-81No0.19313-0.191840.35608-0.355260.19851-0.203618-61No0.20665-0.204810.26798-0.266710.10969-0.104689-61No0.28456-0.282480.71739-0.717690.56206-0.558887-21No0.37716-0.378310.51069-0.510190.88031-0.883094-31Yes0.39598-0.376180.96272-0.914590.64945-0.616989-21No0.44968-0.450350.50216-0.500950.92797-0.930615-61Yes0.52707-0.500711.03669-0.984850.6976-0.662721-21Yes0.90165-0.856571.04754-0.995161.92206-1.82595对发电机的影响：编号 节点相电流 A相电流 B相电流 C10.90165-15.231.52506-164.930.8742146.4230.37618-30.920.91459178.850.6169816.4750.52707-36.291.03669-178.700.697628.75节点1三相对称短路分析：对母线电压的影响：编号相电压 A相电压 B相电压 C10.000000.000.000000.000.000000.0020.10152-1.780.10152-121.780.10152118.2230.36945-20.860.36945-140.860.3694599.1440.30832-24.940.30832-144.940.3083295.0650.31515-21.330.31515-141.330.3151598.6760.28931-27.120.28931-147.120.2893192.8870.22688-30.450.22688-150.450.2268889.5580.25924-25.040.25924-145.040.2592494.9690.21405-25.910.21405-145.910.2140594.09对线路电流的影响：首节点-末节点回路是否变压器相电流 A 相电流 B 相电流 C 8-61No0.20412-0.201850.20412-0.201850.20412-0.201859-81No0.20413-0.199170.20413-0.199170.20413-0.199177-81No0.25602-0.253370.25602-0.253370.25602-0.253374-81No0.31363-0.315460.31363-0.315460.31363-0.315467-41No0.61855-0.615330.61855-0.615330.61855-0.615339-61No0.72575-0.724580.72575-0.724580.72575-0.724587-21No0.80192-0.803570.80192-0.803570.80192-0.803579-21No0.82146-0.822830.82146-0.822830.82146-0.822834-31Yes0.92022-0.874210.92022-0.874210.92022-0.874215-61Yes0.97381-0.925120.97381-0.925120.97381-0.925121-21Yes1.70981-1.624321.70981-1.624311.70981-1.62431对发电机的影响：节点相电流 A相电流 B相电流 C11.33755-63.611.33755176.391.3375556.3930.87421-84.070.87421155.930.8742135.9350.97381-77.710.97381162.290.9738142.29节点1两相接地短路分析：对母线电压的影响：编号相电压 A相电压 B相电压 C11.10248-10.770.000000.000.000000.0021.16367-13.140.07694-121.130.11513107.3531.11283-12.880.3523-152.570.44385101.0241.05278-13.580.29807-159.210.3821998.0551.02842-12.470.28995-153.450.3837399.1261.07366-13.510.2706-162.240.3646494.6071.07266-14.030.19894-166.940.2938988.9681.0579-14.640.23254-159.750.3275594.93对线路电流的影响：首节点-末节点回路是否变压器相电流 A 相电流 B 相电流 C 9-81No0.03439-0.034220.18397-0.180130.20731-0.200917-81No0.0372-0.037290.22403-0.222660.25383-0.249987-41No0.1204-0.109890.62422-0.621780.593-0.588874-81No0.12943-0.129060.35504-0.356120.27745-0.279588-61No0.16321-0.160490.2417-0.240070.174-0.171359-61No0.21153-0.208020.74004-0.739310.69879-0.697324-31Yes0.2571-0.244240.97873-0.92980.84392-0.801727-21No0.34778-0.348920.62864-0.629840.89718-0.899325-61Yes0.39631-0.37651.03443-0.982710.91573-0.869949-21No0.3975-0.398360.6119-0.612880.93462-0.936391-21Yes0.80888-0.768431.29585-1.231061.93906-1.84211对发电机的影响：编号 节点相电流 A相电流 B相电流 C10.80888-8.181.33755176.391.3375556.3930.24424-32.140.9298159.190.8017237.3950.39631-37.431.03443164.130.9157344.5152 线路短路 2-7支路线路短路（50%）2-7之间单相接地短路分析：对节点电压的影响：编号相电压 A相电压 B相电压 C90.2063100.895781800.2470818010000.965111800.3438318050.35489-29.971.12883-136.890.88052106.4110.21155-14.351.15444-135.730.9277112.1480.25285-36.51.16776-140.290.90438105.5140.29565-32.571.16954-138.400.91884105.4460.33903-36.411.18657-138.060.91042105.1170.16263-55.031.19717-141.170.91869107.8520.18259-30.841.226-138.220.96699109.4930.35354-27.011.22762-137.510.97943106.3对线路电流的影响：首节点-末节点回路是否变压器相电流 A 相电流 B 相电流 C 7-21No0-00-00-09-81No0.02937-0.034520.02759-0.030510.02852-0.025224-81No0.20938-0.21010.17884-0.173860.1597-0.162568-61No0.39275-0.390970.1857-0.185770.18741-0.182959-21No0.39438-0.396440.4563-0.458810.38241-0.380857-81No0.48031-0.477980.0511-0.05510.01944-0.02119-61No0.53189-0.530810.23149-0.23060.27685-0.2737-41No0.77646-0.774120.14162-0.139110.17486-0.163864-31Yes0.95544-0.907660.34854-0.331110.34216-0.325065-61Yes0.97571-0.926930.45177-0.429180.4911-0.466541-21Yes1.18534-1.126080.91179-0.86620.77353-0.734857-101No1.20332-1.203980.37758-0.379230.33246-0.3317710-21No1.37067-1.370030.37922-0.380690.33176-0.33096对发电机的影响：编号 节点相电流 A相电流 B相电流 C11.18534-56.920.91179-125.470.7735398.8530.90766-82.440.33111-127.640.3250665.9350.97571-73.940.45177-141.410.491167.592-7之间相间短路分析：对母线电压的影响：编号相电压 A相电压 B相电压 C100.9680600.484021800.4840218011-15.990.49436-178.020.55127147.9581.00785-22.090.54757175.70.51447138.9221.0547-18.90.54773173.690.53363148.1890.9358600.552331800.3835218071.01072-21.830.55668168.130.47232146.4150.99042-19.590.56638-173.740.54049133.2141.02625-20.760.56912178.930.52655137.8961.0347-21.110.59381-179.280.53152134.3431.08437-19.610.60321-175.570.58732135.66对线路电流的影响：首节点-末节点回路是否变压器相电流 A 相电流 B 相电流 C 7-21No0-00-00-09-81No0.02546-0.023680.03846-0.044610.02349-0.020947-81No0.03267-0.038770.4718-0.473810.49719-0.492467-41No0.18158-0.174460.77189-0.771940.66649-0.661974-81No0.19313-0.191840.2448-0.24380.09562-0.100418-61No0.20665-0.204810.43602-0.436280.29127-0.286779-61No0.28456-0.282480.56512-0.565260.40114-0.398057-101No0.37717-0.377830.97678-0.976031.34063-1.3419610-21No0.37782-0.37831.46763-1.468891.17003-1.167524-31Yes0.39598-0.376181.03763-0.985750.71504-0.679299-21No0.44968-0.450350.1757-0.172840.58485-0.587485-61Yes0.52706-0.500711.06298-1.009840.71952-0.683541-21Yes0.90165-0.856571.38007-1.311070.78663-0.74729对发电机的影响：编号 节点相电流 A相电流 B相电流 C10.90165-15.231.38007-162.720.7866355.330.37618-30.920.98575177.580.6792912.950.52707-36.291.06298-178.880.7195227.552-7之间三相对称短路：对母线电压的影响：编号名称相电压 A相电压 B相电压 C10FaultPt000000770.12169-45.880.12169-165.880.1216974.12220.13804-22.360.13804-142.360.1380497.64990.1767300.172771800.00396180110.17945-4.950.17945-124.950.17945115.05880.19431-28.040.19431-148.040.1943191.96440.22296-27.520.22296-147.520.2229692.48660.25797-29.830.25797-149.830.2579790.17330.28388-21.640.28388-141.640.2838898.36550.28573-22.950.28573-142.950.2857397.05对线路电流的影响：首节点-末节点回路是否变压器相电流 A 相电流 B 相电流 C 7-21No0-00-00-09-81No0.03373-0.037840.03373-0.037840.03373-0.037844-81No0.18334-0.18460.18334-0.18460.18334-0.18468-61No0.41118-0.409550.41118-0.409550.41118-0.409559-21No0.42569-0.427080.42569-0.427080.42569-0.427089-61No0.54147-0.540410.54147-0.540410.54147-0.540417-81No0.55932-0.557530.55932-0.557530.55932-0.557537-41No0.82605-0.824170.82605-0.824170.82605-0.824175-61Yes1.00291-0.952761.00291-0.952761.00291-0.952764-31Yes1.00318-0.953021.00318-0.953021.00318-0.953021-21Yes1.18796-1.128561.18796-1.128561.18796-1.128567-101No1.33673-1.337191.33673-1.337191.33673-1.3371910-21No1.51691-1.516391.51691-1.516391.51691-1.51639对发电机的影响：编号 节点相电流 A相电流 B相电流 C11.18796-59.11.18796-179.11.1879660.930.95302-86.180.95302153.820.9530233.8251.00291-78.261.00291161.741.0029141.742-7之间两相接地短路：对母线电压的影响：编号名称相电压 A相电压 B相电压 C10FaultPt1.1265100000771.10842-14.640.12112174.590.1611179.01221.14247-12.440.13806-160.880.18026102.65111.08395-10.080.16543-137.410.21933115.66991.040800.191631800.02283180881.07449-15.050.19243-165.620.2508696.45441.0751-14.040.23629-1640.2816299.96661.07886-13.690.26524-166.790.3290196.28551.03306-12.650.28208-157.10.35238100.94331.13491-13.320.28845-155.010.34462103.44对线路电流的影响：首节点-末节点回路是否变压器相电流 A 相电流 B 相电流 C 7-21No0-00-00-09-81No0.02945-0.030170.0248-0.028930.03782-0.042597-81No0.03965-0.041240.4764-0.475370.57153-0.56887-41No0.11588-0.106350.7909-0.78950.8171-0.814464-81No0.13331-0.132080.24017-0.24090.15433-0.155568-61No0.16227-0.159450.42067-0.41960.38775-0.38559-61No0.21207-0.208770.57467-0.573990.50378-0.502354-31Yes0.25943-0.246451.03829-0.986380.93293-0.886287-101No0.3372-0.337661