武大电力系统分析与运行作业.docx

电力系统分析与运行课堂作业1、计算并观察IEEE30母线标准试验系统的潮流。 1）、负荷功率的变化对负荷节点电压水平的影响； 2）、变压器变比的调节对两端电压水平的影响； 3）、PV节点母线电压水平控制调节对无功电源设备输出功率的影响。（需说明所采用的软件及算法）解：运用PSASP6.28软件计算IEEE30母线标准试验系统的潮流并分析实验结果。所选用的IEEE30节点系统如图1所示。图1 30节点系统图全网潮流计算结果如表1.1、1.2、1.3、1.4、1.5所示：表1.1 母线数据母线名类型电压幅值电压相角有功负荷无功负荷有功发电无功发电coslbus-1 Slack1.060002.61023-0.161141bus-11 PV1.082-14.43180000.162011bus-13 PV1.071-15.28940000.106841bus-2 PV1.04281-5.49720.2170.1270.40.51bus-5 PV1.01-14.39740.9420.1900.370821bus-8 PV1.01-12.12930.30.300.374791bus-10 PQ1.04508-16.02710.0580.02000.94537bus-12 PQ1.05703-15.28940.1120.075000.83091bus-14 PQ1.04219-16.17930.0620.016000.96828bus-15 PQ1.03761-16.26890.0820.025000.95653bus-16 PQ1.04434-15.86460.0350.018000.88929bus-17 PQ1.03985-16.19220.090.058000.84057bus-18 PQ1.02809-16.87830.0320.009000.96265bus-19 PQ1.0256-17.04910.0950.034000.94152bus-20 PQ1.02968-16.8510.0220.007000.95293bus-21 PQ1.03268-16.47020.1750.112000.84227bus-23 PQ1.02712-16.65460.0320.016000.89443bus-24 PQ1.02152-16.82430.0870.067000.79229bus-26 PQ0.9996-16.81060.0350.023000.83571bus-29 PQ1.00335-17.09320.0240.009000.93633bus-3 PQ1.02047-7.9920.0240.012000.89443bus-30 PQ0.99188-17.97610.1060.019000.98431bus-4 PQ1.01161-9.64760.0760.016000.97855bus-7 PQ1.0023-13.14540.2280.109000.9022bus-22 1.03321-16.456100000bus-25 1.01728-16.390900000bus-27 1.02319-15.863100000bus-28 1.00673-12.003500000bus-6 1.01014-11.378500000bus-9 1.05086-14.431800000表1.2 交流线数据I侧母线名J侧母线名编号I侧有功I侧无功I侧充电功率J侧有功J侧无功J侧充电功率bus-10 bus-10 10-0.207520000bus-10 bus-9 14-0.27795-0.050990-0.27795-0.059030bus-11 bus-9 1300.16201000.157350bus-13 bus-12 1500.10684000.105440bus-14 bus-12 16-0.0777-0.022540-0.07845-0.024090bus-15 bus-12 17-0.1762-0.063880-0.17836-0.068130bus-15 bus-14 19-0.01564-0.006490-0.0157-0.006540bus-16 bus-12 18-0.07126-0.032580-0.07179-0.033690bus-17 bus-16 20-0.03619-0.014310-0.03626-0.014580bus-17 bus-10 25-0.05381-0.043690-0.05396-0.044070bus-18 bus-15 21-0.05945-0.015320-0.05984-0.01610bus-19 bus-18 22-0.02741-0.006220-0.02745-0.006320bus-2 bus-1 3-1.723980.323570.02871-1.778640.218230.02966bus-20 bus-19 230.067770.0281200.067590.027780bus-20 bus-10 24-0.08977-0.035120-0.09059-0.036950bus-21 bus-10 26-0.15684-0.09770-0.15795-0.10010bus-22 bus-10 27-0.07572-0.044910-0.07625-0.0460bus-22 bus-21 280.018170.0143100.018160.01430bus-23 bus-15 29-0.0497-0.028640-0.05001-0.029270bus-24 bus-24 20-0.044870000bus-24 bus-22 30-0.0571-0.029890-0.05755-0.03060bus-24 bus-23 31-0.01764-0.012520-0.0177-0.012640bus-25 bus-24 320.01237-0.020100.01227-0.020280bus-26 bus-25 33-0.035-0.0230-0.03545-0.023670bus-27 bus-25 340.048060.0040300.047810.003570bus-28 bus-8 380.00538-0.039870.021690.005360.003580.02183bus-28 bus-6 39-0.18626-0.010380.00659-0.186840.000790.00663bus-29 bus-27 35-0.06104-0.015060-0.0619-0.016690bus-3 bus-1 4-0.803510.013780.02124-0.83159-0.057090.02292bus-30 bus-27 36-0.0693-0.013580-0.07092-0.016630bus-30 bus-29 37-0.0367-0.005420-0.03704-0.006060bus-4 bus-2 5-0.44593-0.038280.01883-0.45703-0.033260.02001bus-4 bus-3 6-0.77180.039240.0043-0.779510.025780.00437bus-5 bus-2 7-0.800910.066170.02132-0.83094-0.015970.02273bus-6 bus-2 8-0.598550.022430.01908-0.61905-0.000350.02034bus-6 bus-4 9-0.695140.170650.00459-0.701140.1590.00461bus-7 bus-5 100.14269-0.131260.010250.14109-0.114650.01041bus-7 bus-6 11-0.370690.022260.00854-0.374370.028180.00867bus-8 bus-6 12-0.294630.078370.00459-0.295740.083690.00459表1.3 两绕组变压器数据I侧母线名J侧母线名编号I侧有功I侧无功J侧有功J侧无功bus-10 bus-6 101-0.15880.01138-0.1588-0.00152bus-12 bus-4 102-0.44059-0.09547-0.44059-0.14204bus-27 bus-28 103-0.18088-0.03735-0.18088-0.05025bus-9 bus-6 100-0.277950.09832-0.277950.08195表1.4 发电机数据母线名类型电压幅值有功发电无功发电cosg电压相角bus-1Slack1.062.61023-0.161140.99810bus-11PV1.08200.162010-14.4318bus-13PV1.07100.106840-15.2894bus-2PV1.042810.40.50.6247-5.4972bus-5PV1.0100.370820-14.3974bus-8PV1.0100.374790-12.1293表1.5 负荷数据母线名电压幅值电压相角有功发电无功发电cosg有功负荷无功负荷coslbus-2 1.04281-5.49720.40.50.62470.2170.1270.86306bus-5 1.01-14.397400.3708200.9420.190.98026bus-8 1.01-12.129300.3747900.30.30.70711bus-10 1.04508-16.02710000.0580.020.94537bus-12 1.05703-15.28940000.1120.0750.83091bus-14 1.04219-16.17930000.0620.0160.96828bus-15 1.03761-16.26890000.0820.0250.95653bus-16 1.04434-15.86460000.0350.0180.88929bus-17 1.03985-16.19220000.090.0580.84057bus-18 1.02809-16.87830000.0320.0090.96265bus-19 1.0256-17.04910000.0950.0340.94152bus-20 1.02968-16.8510000.0220.0070.95293bus-21 1.03268-16.47020000.1750.1120.84227bus-23 1.02712-16.65460000.0320.0160.89443bus-24 1.02152-16.82430000.0870.0670.79229bus-26 0.9996-16.81060000.0350.0230.83571bus-29 1.00335-17.09320000.0240.0090.93633bus-3 1.02047-7.9920000.0240.0120.89443bus-30 0.99188-17.97610000.1060.0190.98431bus-4 1.01161-9.64760000.0760.0160.97855bus-7 1.0023-13.14540000.2280.1090.90221）负荷功率的变化对负荷节点电压水平的影响选取其中一个PQ节点Bus7为例，分别调节其负荷的有功和无功功率，讨论其对节点电压的影响。 调节有功功率P，保持Q=0.109(p.u.)不变表1.6 有功变化对负荷节点电压的影响有功功率P（p.u.）节点电压幅值（p.u.）相角（deg）0.2081.00275-12.97510.2181.00253-13.06020.228(原值)1.0023-13.14540.2381.00208-13.23070.2481.00185-13.316调节无功功率Q，保持P=0.228（p.u.）不变表1.7 无功变化对负荷节点电压的影响无功功率（p.u.）节点电压幅值（p.u.）相角（deg）0.0891.00342-13.16330.0991.00286-13.15440.109（原值）1.0023-13.14540.1191.00174-13.13650.1291.00119-13.1276由表1.6和表1.7可知：对电压幅值的影响：随着负荷有功和无功功率的增加，相应负荷节点电压幅值都会下降，相比之下，无功功率的增加使节点电压幅值下降得更快。对电压相角的影响：对于相角的变化，有功增加使相角更加滞后，而无功增加使相角滞后程度有所减小。相比之下，有功变化对相角的影响较无功大。2）变压器变比的调节对两端电压水平的影响调节Bus12Bus4之间的变压器（编号为102）变比来讨论此问题。表1.8 变压器变比对其两端电压的影响变比Bus12电压Bus4电压幅值（p.u.）相角(deg)幅值（p.u.）相角(deg)0.8321.09706-15.04630.99364-9.540.8821.07155-15.14881.00307-9.58620.932（原值）1.05703-15.28941.01161-9.64760.9821.04289-15.43131.01751-9.69151.0321.01798-15.54191.02043-9.708通过从表