RT15 Berkeley | OPAL-RT Solutions for Microgrid Applications
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Transcript of RT15 Berkeley | OPAL-RT Solutions for Microgrid Applications
OPAL-RT Solution For Micro-grid
Applications Real Time Simulation
OPAL-RT Technologies
OPAL-RT Solution For Micro-grid Applications
• Applications Description
• Challenges Overcome the Real time simulators limitation toward large power systems simulation
Ensure the accuracy of the power electronics circuits simulation
• OPAL-RT Solution for Large scale power systems simulation State Space Nodal method (SSN)
• OPAL-RT Solution for power electronics Medium and low speed controllers applications (F< 10 kHz) : RT-Event/RT-Drive
High speed controllers applications (F> 10 kHz until 100kHz) : EFPGASim (eHS)
• Live Demo
MicroGrid
615 nodes distribution system with 124 R-Loads
Challenges
• Power distribution system with very shorts lines:
No intrinsic elements (DPL) to decouple the model for multi-processors simulation.
Large Time step over 300us to simulate the system in one core (if possible): Low accuracy Risks of numerical instability Memory problem when increasing the quantity of elements such as breakers
Traditional method for model decoupling existing in the market:
using some artificial components: delays and artificial capacitors:
System behavior affected & possible instability due to the delays
Limitation toward large power systems simulation
Challenges
Traditional power electronics simulation tools: No interpolation
Results are accurate when the time step is very small (less than 1 us) or using a variable time step solver
for offline simulation only
Large simulation sampling time for Microgrid applications:
Large time step Results inaccuracy and signals distortion due to misfiring
Accuracy of the power electronics circuits simulation
OPAL-RT Solution OPAL-RT SSN solution for power distribution system decoupling :
Transparency toward system behavior : no delay, no artificial capacitors
Flexibility in terms of processors assignation: a group or set of groups can be assigned to specific available core easily using RT-LAB.
Possibility to add three to four 3-phase breakers per group without affecting the real time simulation.
OPAL-RT Solution
Medium and low speed controllers applications (F< 10 kHz) eMEGASIM: RT-Event/RT-Drive
High speed controllers applications (F> 10 kHz) EFPGASim (eHS)
OPAL-RT solution for power electronics circuit simulation:
• Power electronics circuit simulated with time steps below 1 μs
• Allow very high switching frequencies (10kHz to 100kHz) for semiconductor technology
Live Demo
Smart Grid
Application 2
This model simulates a smart-grid that combines three benchmark models of IEEE and SimPowerSystems in the same application:
Model 1: Sub-synchronous resonance (SSR) using a Steam Turbine on series-compensated network.
Model 2: Solar Panel connected to grid
Model 3: 9 MW Wind farm DFIG based connected to grid
Application 2:model1 Steady State
Application 2: model1 3-ph fault
Application 2: model2 open loop
Application 2: model2 closed loop1
Application 2: model2 closed loop2
Application 2: model3 Steady state
Application 2: model3 3-ph fault1
Application 2: model3 3-ph fault2
Application 2: model3 3-ph fault3
Application 2: model3 3-ph fault
Application 2: Real Time Performance
CPUs
Descriptions
Components Content Model Calculation
Time
Minimum
time step
CPU 1: (20 µs)PV system + Steam
turbine system 8 us 12 us
CPU 2: (20us) DFIG System 9 us 12 us
Processor Allocation and Real-Time Performance
Live Demo