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BERTA User's Guide V5.2 English BERTA Regulator-Turbine-Alternator Test Bench Excerpts from User's Guide www.opal-rt.com Published by Opal-RT Technologies, Inc. 1751 Richardson, suite 2525, Montreal (Quebec) Canada H3K 1G6 www.opal- rt.com © 2016 Opal-RT Technologies, Inc. All rights reserved Printed in Canada OPAL-RT Technologies Inc. Page 2 / 61 TABLE OF CONTENTS 1 SYMBOL DESCRIPTIONS ............................................................................................................................... 8 2 BERTA ON-SITE ............................................................................................................................................. 9 2.1 OPERATION OF BERTA ON-SITE......................................................................................................... 10 2.1.1 Calibration ..................................................................................................................................... 10 2.1.2 Input/Output signal mapping ....................................................................................................... 10 2.1.3 Scaling of input signals NO. 12 to 28 ............................................................................................ 10 2.1.4 Scaling of processed signals .......................................................................................................... 11 2.1.5 Switching control to BERTA........................................................................................................... 11 2.1.6 Selection of operating mode and disturbance ............................................................................. 11 2.1.7 Open Loop Operating Mode ......................................................................................................... 12 2.1.8 Islanded Network Operation Mode (Closed loop) .................................................................... 24 2.1.9 Using the BERTA Controller .......................................................................................................... 39 3 POWER PLANT TEST PROCEDURES............................................................................................................ 41 3.1 GENERAL RECOMMANDATION ......................................................................................................... 42 3.2 TEST PREPARATION ........................................................................................................................... 43 3.2.1 Preparing the turbine model ........................................................................................................ 43 3.2.2 Preparing the speed governor model ........................................................................................... 43 3.3 SETUP ................................................................................................................................................. 44 3.4 SCALING SIGNALS .............................................................................................................................. 46 3.5 OBSERVATIONS OF STEADY STATE VALUES ..................................................................................... 47 3.6 OPEN LOOP TESTS ............................................................................................................................. 48 3.6.1 Test No. 1 ....................................................................................................................................... 48 3.6.2 Test No. 2 ...................................................................................................................................... 50 3.6.3 Test No. 3 ....................................................................................................................................... 51 3.7 CLOSED LOOP TESTS .......................................................................................................................... 54 3.7.1 Test No. 4 ....................................................................................................................................... 55 3.8 CLOSED LOOP TESTS WITH PSS EMULATION .................................................................................... 60 3.8.1 Tests No 5 and 6 ............................................................................................................................ 60 OPAL-RT Technologies Inc. Page 3 / 61 LIST OF FIGURES Figure 1: Selection of active network ................................................................................................................ 10 Figure 2: Open Loop Frequency step. Frequency deviation and simulated power ......................................... 13 Figure 3: Open Loop Frequency step. Servomotor, electric and mechanical power ...................................... 14 Figure 4: Schematic diagram of the filtered step function ............................................................................... 15 Figure 5: Filtered Frequency Step. Frequency deviation .................................................................................. 15 Figure 6: Filtered Frequency Step – Servomotor, electric and mechanical power .......................................... 16 Figure 7: Frequency Sinus. Frequency deviation .............................................................................................. 17 Figure 8: Frequency sinus. Servomotor, electric and mechanical power ........................................................ 17 Figure 9: Frequency pulse. Frequency deviation .............................................................................................. 18 Figure 10: Frequency pulse. Servomotor, electric and mechanical power ...................................................... 18 Figure 11: Frequency of oscillation for open loop frequency sweep disturbance .......................................... 19 Figure 12: Frequency sweep. Frequency deviation .......................................................................................... 19 Figure 13: Frequency sweep; Frequency deviation. Zoom on last 20 seconds. .............................................. 20 Figure 14: Frequency sweep. Servomotor, electric and mechanical power .................................................... 20 Figure 15: Frequency sweep; Servomotor, electric and mechanical power. Zoom on last 20 seconds ......... 21 Figure 16: Open Loop Pulse Train. Pulse value VS Sweep Frequency. ............................................................. 22 Figure 17: Impulse train. Frequency deviation ................................................................................................. 22 Figure 18: Impulse train. Servomotor, electric and mechanical power ........................................................... 23 Figure 19: Frequency ramp. Frequency deviation ............................................................................................ 24 Figure 20: Frequency ramp. Servomotor, electric and mechanical power ...................................................... 24 Figure 21: Islanded operation. Load step. Gp=4.8; Gi=0.4 ............................................................................... 26 Figure 22: Islanded operation. Load step. Gp=6; Gi=0.5 .................................................................................. 26 Figure 23: Islanded operation. Load step. Gp=2.5; Gi=0.5 ............................................................................... 27 Figure 24: Closed loop. Load step with 2nd order filter. Frequency, electric and mechanical power ............. 28 Figure 25: Closed loop. Load step with 2nd order filter. Servomotor ............................................................... 28 Figure 26: Closed loop. Fixed frequency sinus. Frequency, electric load and mechanical power .................. 29 Figure 27: Closed loop; Fixed frequency sinus. Servomotor and mechanical power ...................................... 29 Figure 28: Islanded mode. Load pulse. Frequency, electric load, mechanical power ..................................... 30 Figure 29: Islanded mode. Load pulse. Servomotor ......................................................................................... 31 Figure 30: Islanded mode. Load ramp. Frequency, electric load and mechanical power ............................... 32 Figure 31: Islanded mode. Load ramp. Servomotor ......................................................................................... 32 Figure 32: Islanded virtual units configuration and selection of unit #5 for rejection .................................... 33 Figure 33: Islanded Operation; Rejection of unit #5. Frequency, electric load and mechanical power ......... 34 Figure 34: Islanded operation; Rejection of unit #5. Servomotor, tested unit electric and mechanical power ............................................................................................................................................................................ 35 Figure 35: Load configuration and selection of units #4 and #5 for rejection ................................................. 36 Figure 36: Shedding scheme. Load #2 ............................................................................................................... 37 Figure 37: Islanded operation. 2 units rejections and load shedding. Frequency, electric load and mechanical power .............................................................................................................................................. 38 Figure 38:
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