testdrive demo electric ship onboard power system
DESCRIPTION
TestDrive Demo Electric Ship Onboard Power System. OPAL-RT TECHNOLOGIES Montreal, Quebec, Canada www.OPAL-RT.com. EMS Rev. 001, March, 2009. Contents. Model Description TestDrive Panel Introduction Test Scripts Model link: onboardPS_ESTS_mdl1v19b_r2008a.mdl - PowerPoint PPT PresentationTRANSCRIPT
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TestDrive DemoTestDrive DemoElectric Ship Onboard Power Electric Ship Onboard Power
SystemSystem
OPAL-RT TECHNOLOGIESMontreal, Quebec, Canada
www.OPAL-RT.com
EMSRev. 001, March, 2009
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Contents
Model Description
TestDrive Panel Introduction
Test Scripts
Model link: onboardPS_ESTS_mdl1v19b_r2008a.mdl (open with Matlab 7.0.1, if open with higher version quit without save)
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Model Schematic
The Electric Ship Onboard Power System
PCMNV acload
PCMNV dcload
PCMVitalload
PCMVitalload
PCMNV dcload
PCMNV acload
PGMPCM
PCM
PCM NV acload
PCM NV dcload
EPM M
PCM NV dcload
PCM NV acload
EPM M
Port Bus
Starboard Bus
Generator Group
Load Group1 on Port Side
Load Group1 on Starboard Side
Load Group2 on Port Side
Load Group2 on Starboard Side
Zone 1
Load Group 1 on Port Side
Load Group 2 on Port Side
GeneratorGroup
Load Group 1 on Starboard Side
Load Group 2 on Starboard Side
Zone 2
Load Group 1 on Port Side
Load Group 2 on Port Side
GeneratorGroup
Load Group 1 on Starboard Side
Load Group 2 on Starboard Side
Zone 3
Load Group 1 on Port Side
Load Group 2 on Port Side
GeneratorGroup
Load Group 1 on Starboard Side
Load Group 2 on Starboard Side
Zone 4
SW
-G1
SW-P1
SW
-G2
SW-S1
SW-P2
SW-S2
SW-P3
SW-S3
Fault Location 1
Fault Location 2
In this 1-target model, only Zone 1 and 2 are modeled.
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Model Schematic
Load Details
Hotel load: Non-critical ac
load
Induction motor (IM)
Critical load
Constant power load: Non-
critical dc load
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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.
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Model Description
Zone 1Load
Group 1
Shared Memory
Zone 1Generator
Group
Zone 1Load
Group 2
Zone 2Load
Group 1
Zone 2Generator
Group
Zone 2Load
Group 2
CPU1 CPU2 CPU3
CPU4 CPU5 CPU6
Target 1
Zone 3Load
Group 1
Shared Memory
Zone 3Generator
Group
Zone 3Load
Group 2
Zone 4Load
Group 1
Zone 4Generator
Group
Zone 4Load
Group 2
CPU1 CPU2 CPU3
CPU4 CPU5 CPU6
Target 2
PC
I E
xpre
ss
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.
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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
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Model Description
System Load
Induction machine
Hotelload
Constant power load
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TestDrive Panel Introduction
Control Panel and System Diagram
AC load break On/OffConst. load ref. setTSB compensation
Scope select
IM controlselect
IM load select
Faultsetup
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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
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TestDrive Panel Introduction
Load Measurement Panel
Hotel load 3-phase voltages
Hotel load 3-phase currents
Hotel load P & Q
Constant Load Power
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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
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TestDrive Panel Introduction
System Schematic
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Test Scripts
1. Steady state1. Steady state2. IM control3. Hotel load and Constant load variations4. Time Stamped Bridge compensation
2. Fault studies1. Generator bus fault2. Port bus fault
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Test Scripts
1. Steady state1. Steady state2. IM control3. Hotel load and Constant load variations4. Time Stamped Bridge compensation
2. Fault studies1. Generator bus fault2. Port bus fault
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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
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Test Script: Steady State
1.1Steady statebus voltages are at 1pu in steady states
Bus measurement Panel
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Test Script: Steady State
1.1Steady stateHotel 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
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Test Script: Steady State
1.1Steady state
IM measurement Panel
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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
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Test Script: Steady State
1.2 IM controlIn 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
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Test Script: Steady State
1.2 IM controlIn 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
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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
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Test Script: Steady State
1.3Hotel load and Constant load variationsIn 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)
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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
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Test Script: HVAC Fault
1.4Time Stamped Bridge compensationTo have a close view of waveforms, show acquisition group 1,
set frame size = 50 ms.
Show acquisitionGroup 1, set frame
Size = 50 ms
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Test Script: Steady State
1.4Time Stamped Bridge compensation
Without RTE compensation
bus measurement Panel
With RTE compensation
Vdc has ±1% variations Vdc has ±0.5% variations
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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
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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% )
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Test Scripts
1. Steady state1. Steady state2. IM control3. Hotel load and Constant load variations4. Time Stamped Bridge compensation
2. Fault studies1. Generator bus fault2. Port bus fault
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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
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Test Script: Fault Studies
2.1Generator bus fault
measurements @ Zone 1Bus 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.
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Test Script: Fault Studies
2.1Generator bus fault at Zone 1In the control panel, select ‘scope selection’ to ‘zone 2 load 1’.
measurements @ Zone 2Bus 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.
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Test Script: Fault Studies
2.1Generator bus fault at Zone 1The 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
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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
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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
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Test Script: Fault Studies
2.2Port bus fault at Zone 1
measurements @ Zone 1Bus 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.
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Test Script: Fault Studies
2.2 Port bus fault at Zone 1In Control Panel, select ‘port bus’ and loads in Zone 1.
Zone 1 Port Busload measurement Panel
All the non-critical loads connected to port bus fail during fault
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Test Script: Fault Studies
2.2 Port bus fault at Zone 1In Control Panel, select ‘port bus’ and loads in Zone 1.
Zone 1 Port BusIM measurement Panel
IM, as a critical load, works normally due to its redundant power supply: it is connected to both port and starboard buses.
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Test Script: Fault Studies
2.2 Port bus fault at Zone 1In Control Panel, select ‘starboard bus’ and loads in Zone 1.
Zone 1 Starboard BusLoad measurement Panel
All the non-critical loads connected to starboard bus work normally during fault
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Test Script: Fault Studies
2.2 Port bus fault at Zone 1In Control Panel, select ‘port bus’ and loads in Zone 2.
measurements @ Zone 2Bus 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
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Test Script: Fault Studies
2.2 Port bus fault at Zone 1In Control Panel, select ‘port bus’ and loads in Zone 2.
Zone 2 Port Busload 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.
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Thanks
End of Electric Ship Onboard Power System
Demo.
Questions and comments?