BEGIN NEW DATA CASE C BENCHMARK DCNEW-18 C 1st of ? subcases that confirm additional aspects of U.M. usage. C U.M. illustration of SHARE. From Dr. Yin Yuexin by E-mail on 30 Jan 1996 C SIMULATION OF A THREE-PHASE SYNCHRONOUS MOTOR - GENERATOR SET USING THE C U.M. MODULE --- believed to be originally from Prof. Juan Martinez C The machines have different number of poles: motor = 3 pole pairs, generator C is 6 pole pairs. Steady State is calculated using Automatic Initialization. C Terminal voltages of motor and generator have been adjusted so that C mechanical torques are equal. * Sudden change in the generator load. C The simulation is made using SHARE to connect the two shafts mechanically C EPSILN = 1.E-12 was removed (default 1.E-8 gives nearly identcal answers). C Dynamics shown here, over the first 10 msec, are just the tip of the C iceberg. Extend TMAX to 5 sec to see much more. The motor torque is not C at all constant as the PRINTER PLOT shows over 10 msec. Instead, it C involves an oscillation having a period of about 1.2 sec. The same C is true for the envelope of the armature current. For such longer runs, C double DELTAT to .2 msec (curves will not change significantly). POWER FREQUENCY, 50 0.0001 .010 1 1 1 1 1 -1 1 20 20 100 100 1000 1000 C ----- Power network equivalent impedance 0BUS-AMBUS-A0 .250 3.50 0BUS-BMBUS-B0BUS-AMBUS-A0 0BUS-CMBUS-C0BUS-AMBUS-A0 C ----- Generator load 0BUS-AG 5.0 4.5 0BUS-BG 5.0 4.5 0BUS-CG 5.0 4.5 C ----- Generator load change (connect these by switch closure at 1 msec): 0BUSAG1 4.8 4.0 0BUSBG1 4.8 4.0 0BUSCG1 4.8 4.0 C - Field circuits of motor: 0BUSFM1 1.0 0BUSFM1BUSFM0 1.E-10 C - Field circuits for generator: 0BUSFG1 1.0 0BUSFG1BUSFG0 1.E-10 C ----- Mechanical network data 0BUSMM1BUSMM0 1.E-10 0BUSMM0 10.0E9 0BUSMM0BUSMG0 1.E-10 0BUSMG0 39.4E9 0BUSMG1BUSMG0 1.E-10 BLANK CARD ENDING BRANCH CARDS. BUS-AGBUSAG1 .001 99.0 { 1st of 3 switches close at 1 msec to add load BUS-BGBUSBG1 .001 99.0 BUS-CGBUSCG1 .001 99.0 C BUS-AGBUSAG1 -1.0 99.0 { 1st of 3 switches close at 1 msec to add load C BUS-BGBUSBG1 -1.0 99.0 C BUS-CGBUSCG1 -1.0 99.0 BLANK CARD ENDING SWITCH CARDS. C ----- Infinite bus source voltages 14BUS-A0 9800.0 50.0 0.0 -1.0 14BUS-B0 9800.0 50.0 -120.0 -1.0 14BUS-C0 9800.0 50.0 120.0 -1.0 C ----- Excitation source voltages C - (Actual value set by Steady State Initialization) C - Motor 14BUSFM1 0.01 .00001 0.0 -1.0 C - Generator 14BUSFG1 0.01 .00001 0.0 -1.0 C ----- Current sources simulating mechanical torques under steady state C - (Actual value should be zero) 14BUSMM1-1 0.01 .00001 0.0 -1.0 14BUSMG1-1 0.01 .00001 0.0 -1.0 C ----- Two synchronous machine specifications (using U.M.) follow: 19 UM { Universal Machine of Prof. Hian Lauw is Type-19 source component 1 { This gives prediction for armature coils ("0" in col. 2 for compensation) BLANK card ending Class 1 UM data, which is not repeated C ============= Motor data is for 1st of 2 conventional synchronous machines: 1 2 1111BUSMM0 3 .001 50. .0082506 .0059588 SHARE 2 { Shaft of this UM-1 is to be connected to shaft of UM-2 9444.02 -9.4 BUSFM1BUSMM1 C - UM Coil-Table 0.014400 0.0005500 BUS-AM 1 0.014400 0.0013751 BUS-BM 0.014400 0.0013751 BUS-CM 0.001450 0.0010313 BUSFM0 0.020372 0.0001019 0.133560 0.0007192 C ============ Generator data is for 2nd of 2 conventional synchronous machines 1 2 111 BUSMG0 6 .001 100. .0095748 .0073339 SHARE 1 { Shaft of this UM-2 is to be connected to shaft of UM-1 9400.0 0.0 BUSFG1 C - UM Coil-Table 0.0256000 0.0009167 BUS-AG 1 0.0256000 0.0018335 BUS-BG 0.0256000 0.0018335 BUS-CG 0.0012913 0.0014012 BUSFG0 0.0271620 0.0002445 0.1333400 0.0006667 BLANK CARD ENDING UM DATA. BLANK CARD ENDING SOURCE CARDS. C Total network loss P-loss by summing injections = 2.085588779750E+07 C Total network loss P-loss by summing injections = 2.998766670851E+16 C Total network loss P-loss by summing injections = 2.998766672952E+16 C Total network loss P-loss by summing injections = 2.998766672952E+16 C 1st gen: UM2MCC 104.71975511966 104.71975511966 -.1628101692E-3 .1211292268344 -.0085247205233 6.3423114859661 C 0.0 0.0 .12112911741752 90.0770115 -6.342305756912 -0.0013441 C C 2nd gen: BUSMM0 104.71975511966 104.71975511966 192780.21968365 192780.49349675 .100939486986E8 .100939630354E8 C 0.0 0.0 324.91779476689 0.0965680 -17012.655951 0.9999986 BUS-AMBUS-AG { Request for output of node voltages C Step Time BUS-AM BUS-AG UM-1 UM-1 UM-1 UM-1 UM-2 UM-2 UM-2 C TQGEN OMEGM THETAM IPA TQGEN OMEGM IPA C 0 0.0 9317.20779 9400.00222 -192780.22 104.719755 -.49123491 -1428.7533 192782.988 104.719755 1424.4929 C 1 .1E-3 9361.30121 9382.16106 -192781.1 104.719755 -.49123491 -1431.6422 192780.108 104.719755 1472.24713 C 2 .2E-3 9395.4359 9325.62226 -192781.13 104.719755 -.49123491 -1433.1122 192777.93 104.719755 1514.19778 C 3 .3E-3 9421.26214 9234.08498 -192781.15 104.719755 -.49123491 -1433.1679 192775.738 104.719755 1550.17388 C 100 .01 -9315.4209 8085.5945 -192956.77 104.696694 -.49153195 1430.08855 307671.343 104.696652 2304.75957 BLANK card ending node voltage output requests C maxima : 9444.04202 9400.00222 -192780.22 104.719755 -.49123491 1430.08855 349434.719 104.719755 2304.75957 C Times of max : .5E-3 0.0 0.0 0.0 .0016 .01 .0034 0.0 .01 C minima : -9315.4209 -8421.5743 -192956.77 104.696694 -.49153195 -1433.1679 192762.301 104.696652 -3028.4258 C Times of min : .01 .0052 .01 .01 .01 .3E-3 .1E-2 .01 .006 PRINTER PLOT 194 2. 0.0 10. UM-1 TQGEN UM-2 TQGEN { Limits: (-1.930, 3.494) 144 2. 0.0 10. BUS-AMBUS-AG { Limits: (-9.315, 9.444) BLANK card ending plot cards BEGIN NEW DATA CASE BLANK