1. TestDrive Demo Electric Ship Onboard Power System OPAL-RT TECHNOLOGIES Montreal, Quebec, Canada www.OPAL-RT.com EMS Rev. 001, March, 2009

2. 2 Contents  Model Description  TestDrive Panel Introduction  Test Scripts Model link: onboardPS_ESTS_mdl1v19b_r2008a.mdlonboardPS_ESTS_mdl1v19b_r2008a.mdl (open with Matlab 7.0.1, if open with higher version quit without save)

3. 3 Model Schematic  The Electric Ship Onboard Power System In this 1-target model, only Zone 1 and 2 are modeled.

4. 4 Model Schematic  Load Details Hotel load: Non-critical ac load Induction motor (IM) Critical load Constant power load: Non- critical dc load

5. 5 Model Description  This model simulate a electric ship onboard power system.  Two zones are simulated in a 1-target model and four zones are simulated in a 2-target model.  It can be used for system steady state and transient studies. During a fault, the onboard power system is reconfigured to avoid failure of critical loads.

6. 6 Model Description  CPU allocation and Signal exchange media Two zones are simulated in a 1-target model and four zones are simulated in a 2-target model.

7. 7 Model Description  Model’s look in Simulink/SPS console Generators @ Zone2 Load 1 @ Zone2 Load 2 @ Zone2 Generators @ Zone1 Load 1 @ Zone1 Load 2 @ Zone1

8. 8 Model Description  System Load Induction machine Hotel load Constant power load

9. 9 TestDrive Panel Introduction  Control Panel and System Diagram AC load break On/Off Const. load ref. set TSB compensation Scope select IM control select IM load select Fault setup

10. 10 TestDrive Panel Introduction  IM Measurement Panel IM 3-phase voltages IM 3-phase currents IM active & reactive powers IM Torques (elec. & Mech.), mech. Speed, modulation index

11. 11 TestDrive Panel Introduction  Load Measurement Panel Hotel load 3- phase voltages Hotel load 3- phase currents Hotel load P & Q Constant Load Power

12. 12 TestDrive Panel Introduction  Bus Measurement Panel Port and starboard bus Voltages dc voltages of Gen1 & collector bus dc currents of Gen1 & collector bus powers of Gen1 & collector bus

13. 13 TestDrive Panel Introduction  System Schematic

14. 14 Test Scripts 1. Steady state 2. IM control 3. Hotel load and Constant load variations 4. Time Stamped Bridge compensation 2. Fault studies 1. Generator bus fault 2. Port bus fault

15. 15 Test Scripts 1. Steady state 2. IM control 3. Hotel load and Constant load variations 4. Time Stamped Bridge compensation 2. Fault studies 1. Generator bus fault 2. Port bus fault

16. 16 Test Script: Steady State 1.1Steady state  In Control Panel, keep parameters at default values. Select buses port/starboard and which zone and load to observe the waveforms. Control Panel

17. 17 Test Script: Steady State 1.1Steady state bus voltages are at 1pu in steady states Bus measurement Panel

18. 18 Test Script: Steady State 1.1Steady state Hotel load power is 1pu, constant power is 0.5pu as set in the control panel. (The base value of the two powers are on their own ratings) Load measurement Panel

19. 19 Test Script: Steady State 1.1Steady state IM measurement Panel

20. 20 Test Script: Steady State 1.2IM control  In Control Panel, select IM load, IM control mode and reference, and perturbation mode and magnitude. Control Panel

21. 21 Test Script: Steady State 1.2IM control In this test, the IM load ‘torque=omege^2’, control mode=‘speed control’, Speed reference = ‘0.8pu’, perturbation mode =‘Triangle’, perturbation value=‘0.1pu’ are selected. IM measurement Panel the IM speed tracks to its reference

22. 22 Test Script: Steady State 1.2IM control In this test, the IM load ‘torque=omege^2’, control mode=‘speed control’, Speed reference = ‘0.8pu’, perturbation mode =‘Triangle’, perturbation value=‘0.1pu’ are selected. Bus measurement Panel

23. 23 Test Script: Steady State 1.3Hotel load and Constant load variations  In Control Panel, select to switch On/Off of one branch of Hotel load.  Set the constant load power reference. Control Panel

24. 24 Test Script: Steady State 1.3Hotel load and Constant load variations In this test, ‘ac_load_break’ = ‘Off’, ‘const_ld_ref’=1.5pu Load measurement Panel the constant power load consumes a power of 1.5 pu, same as the reference the Hotel load current and power reduced to 0.2 pu (the load of 0.8 pu is switched off)

25. 25 Test Script: Steady State 1.4Time Stamped Bridge compensation  In Control Panel, switch the ‘TSB compensation’ ON/OFF to see its effects on the waveforms. Control Panel

26. 26 Test Script: HVAC Fault 1.4Time Stamped Bridge compensation  To have a close view of waveforms, show acquisition group 1, set frame size = 50 ms. Show acquisition Group 1, set frame Size = 50 ms

27. 27 Test Script: Steady State 1.4Time Stamped Bridge compensation Without RTE compensation bus measurement Panel With RTE compensation Vdc has ±1% variationsVdc has ±0.5% variations

28. 28 Test Script: Steady State 1.4Time Stamped Bridge compensation Without RTE compensation IM measurement Panel With RTE compensation IM Voltages has more distortion IM currents has more distortion IM elec. torque has larger ripples

29. 29 Test Script: Steady State 1.4Time Stamped Bridge compensation Without RTE compensation IM measurement Panel With RTE compensation Hotel load Voltages has more distortion Hotel load currents has more distortion Power of constant power load has larger ripples (±50% vs. ±7% )

30. 30 Test Scripts 1. Steady state 2. IM control 3. Hotel load and Constant load variations 4. Time Stamped Bridge compensation 2. Fault studies 1. Generator bus fault 2. Port bus fault

31. 31 Test Script: Fault Studies 2.1Generator bus fault at Zone 1  In Control Panel, select the fault being ‘permanent’ or ‘periodical’, set fault = ‘Generator bus’. Control Panel

32. 32 Test Script: Fault Studies 2.1Generator bus fault measurements @ Zone 1 Bus measurement Panel As fault cleared, Gen1 and collector bus voltages rising up. The system reconfigure its connection by switching off the fault generation group and keeps port and starboard bus Voltages 1 pu Gen1 and collector bus voltages drop to zero during the fault. Generator is re-connected 0.1s after the fault is cleared. Vdc drops to 0.8 pu because Vdc_gen has not recovered to 1pu at that moment.

33. 33 Test Script: Fault Studies 2.1Generator bus fault at Zone 1 In the control panel, select ‘scope selection’ to ‘zone 2 load 1’. measurements @ Zone 2 Bus measurement Panel Port and starboard bus voltages in Zone 2 have same profile as in Zone 1 Generator group in Zone 2 is affected. Adjusting the generator reconnection policy (e.g. delay time) can avoid voltage drop on port and starboard buses.

34. 34 Test Script: Fault Studies 2.1Generator bus fault at Zone 1 The fault has little effects on the hotel load and constant power load. measurements @ Zone 1 Load measurement Panel The visible effects is due to dc voltage drop when the generator group is re- connected

35. 35 Test Script: Fault Studies 2.1Generator bus fault at Zone 1 measurements @ Zone 1 IM measurement Panel The visible effects is due to dc voltage drop when the generator group is re- connected

36. 36 Test Script: Fault Studies 2.2Port bus fault at Zone 1  In Control Panel, select the fault being ‘permanent’ or ‘periodical’, set fault = ‘Port bus’. Control Panel

37. 37 Test Script: Fault Studies 2.2Port bus fault at Zone 1 measurements @ Zone 1 Bus measurement Panel Port bus at Zone 1 reconnects to adjacent zones 0.05s after fault cleared. Starboard bus voltage remains 1 pu Port bus Voltage drop to zero during the fault. Generators reconnect 0.1s after the fault cleared. The system reconfigure its connection to isolate the port bus of Zone 1. Voltages of port bus at other zones, and generator bus at Zone 1 stay around 1 pu.

38. 38 Test Script: Fault Studies 2.2 Port bus fault at Zone 1 In Control Panel, select ‘port bus’ and loads in Zone 1. Zone 1 Port Bus load measurement Panel All the non-critical loads connected to port bus fail during fault

39. 39 Test Script: Fault Studies 2.2 Port bus fault at Zone 1 In Control Panel, select ‘port bus’ and loads in Zone 1. Zone 1 Port Bus IM measurement Panel IM, as a critical load, works normally due to its redundant power supply: it is connected to both port and starboard buses.

40. 40 Test Script: Fault Studies 2.2 Port bus fault at Zone 1 In Control Panel, select ‘starboard bus’ and loads in Zone 1. Zone 1 Starboard Bus Load measurement Panel All the non-critical loads connected to starboard bus work normally during fault

41. 41 Test Script: Fault Studies 2.2 Port bus fault at Zone 1 In Control Panel, select ‘port bus’ and loads in Zone 2. measurements @ Zone 2 Bus measurement Panel There is oscillations when reconnection. It can be improved by system design (i.e. a reactor between adjacent zones). Port bus at Zone 2 remains 1 pu since during the fault it is disconnected from Zone 1

42. 42 Test Script: Fault Studies 2.2 Port bus fault at Zone 1 In Control Panel, select ‘port bus’ and loads in Zone 2. Zone 2 Port Bus load measurement Panel All the non-critical load connected to port bus at Zone 2 only has little effects during reconnection after the fault is cleared.

43. 43 Thanks  End of Electric Ship Onboard Power System Demo.  Questions and comments?