RT15 Berkeley | ePHASORsim: Real-time transient stability simulation tool - OPAL-RT
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ePHASORsim is a real-time transient stability simulation tool that can simulate large power systems with thousands of nodes using a phasor domain solution with time-steps in the range of milliseconds. It can run simulations both offline and in real-time on RT-LAB enabled simulators. It has a variety of features including modeling of transmission and distribution systems, flexible data input formats, on-the-fly parameter changes, measurements and monitoring, parallel processing, and support for communication protocols and functional mock-up interface. It has been used for applications such as operator training, wide area monitoring, state estimation, and automatic control.
RT15 Berkeley | ePHASORsim: Real-time transient stability simulation tool - OPAL-RT
- 1. 1 Vahid Jalili-Marandi, Ph.D. OPAL-RT Technologies Vahidj@opal-rt.com ePHASORsim: Real-time transient stability simulation tool
- 2. ePHASORsim eFPGAsim Wide Area Simulation Large EMT Simulation Power Systems & Power Electronics Precise Power Electronics Simulation Large 10 000+ Nodes Small <100 Nodes Model Size nanosecondsmilliseconds Simulation time-step microseconds eMEGAsim HYPERSIM Mixed Phasor-EMT mode with simulation of communication and SCADA Systems
- 3. Real-time transient stability simulator • Large-scale power systems • Transmission, distribution and generation Phasor domain solution • Nominal frequency • Positive sequence (balanced systems) • 3-phase (unbalanced systems) • Time-step in the range of few milliseconds What is ePHASORsim?
- 4. Offline Phasor Tools time-step: millisecond PSS/e ETAP EUROSTAG CYME Real-time Simulators time-step: microsecond eMEGAsim Hypersim RTDS … ePHASORsim What are existing tools? ePHASORsim is a TS-type simulation tool that not only runs offline but also runs in real-time on RT-LAB enabled simulators
- 6. • Built-in positive sequence and 3-phase library • Synchronous machine • Excitation system, turbine-governor • Controllable voltage source • Controllable current source • Transformer: • OLTC, mutual impedance, unbalanced tap • Line: • PI section, sequence impedance, phase impedance • Load • Constant power, constant current, constant impedance, ZIP • Shunt devices • Breaker, switches, and events Features…
- 7. Features… • Simulation of Transmission and Distribution Systems
- 8. PI Section in positive sequence networks 3-Phase PI section with sequence impedance 3-Phase PI section with phase impedances
- 9. • Flexible data input format • Excel workbook • Positive sequence components • Three-phase components • Measurements and commands • PSS/e data conversion: • *.raw and *.dyr files • Measurements and commands Features…
- 10. • On-the-fly changes of parameters • P and Q of loads • Load and generation profile • Transformer tap position • Service status of load, branch, machine • Set-points and references for controllers • Fault on a transmission line with variable location • … Features…
- 11. • Measurement, monitoring, and log files • RMS and angle of voltage and current • Tap position of transformers • Service status of machine, load, branch, etc. • Log measurements in *.mat during simulation for further analysis • ScopeView and Matlab compatible output files • … Features…
- 12. • Parallel processing • Linked with METIS to partition the system automatically • Linked with openMP for CPU core assignments • Parallel solver • … Features…
- 13. • Performance for 33,000 buses distribution system, 10ms time-step Features…
- 14. • Ethernet protocols and I/Os • Compatible with communication protocols and I/O cards that OPAL-RT targets support • PMU streams with C37.118 • DNP and OPC Features…
- 16. • Support FMI: Functional Mock-up Interface • Background of FMI in a glance… • The European ITEA2 project, 2008-2011, leaded MODELISAR and 29 partners worked to improve of systems and embedded software in vehicles. • FMI was developed as the result of this project to exchange models from different simulation environments, including Modelica and non-Modelica tools. • Today about 67 simulation tools support FMI • In power system area, iTesla project (initiated in 2012) is using FMI for model exchange and parameter validation. Features…
- 17. • Support FMI: Functional Mock-up Interface • FMI in ePHASORsim… • Expands the built-in library of models • Integrates user defined models • Exchange models between different simulation tools • Feasibility for cross-company and development partners collaborations • Transparency of models and…. keep them independent from the solver Features…
- 18. Modelica 2011: Functional Mockup Interface Slide 18 FMI - Main Design Idea (1) FMI for Model Exchange: Version 1.0 released in January 2010 FMI for Co-Simulation: Reuses as much as possible from FMI for Model Exchange standard Version 1.0 released in October 2010 Tool Solver FMU Model Tool FMU Model Solver Slide from www.fmi-standard.org
- 19. Modelica 2011: Functional Mockup Interface Slide 19 FMI - Main Design Idea (2) A component which implements the interface is called Functional Mockup Unit (FMU) Separation of Description of interface data (XML file) Functionality (C code or binary) A FMU is a zipped file (*.fmu) containing the XML description file and the implementation in source or binary form Additional data and functionality can be included Interface specification: www.functional-mockup-interface.org Slide from www.fmi-standard.org
- 20. • FMI for Modelica based FMUs • FMU generation for both Windows and Linux OS • FMI is compatible with OpenModelica: an open source Modelica tool • A library of models are developed based on PSS/e components Features…
- 21. ePHASORsim’s FMU Creator FMUs are loadable directly from • Excel Template • PSS/e *.dyr file
- 22. ePHASORsim in action… • Operator Training Simulator • Wide visibility of the system • Dynamic system identification • Wide area oscillation detection • Phasor based state estimation • Automatic feedback control • Optimize placement of PMUs
- 23. Phasor Simulator for Operator Training ePHASORsim Model • Real-time • 10 ms time-step • Linux OS ePHASORsim Simulator Synchrophasor Application • Angle difference • P and Q • Frequency • Sensitivity analysis • Angular separation • Visualization, alarm, notification • … RTDMS Tools C37.118Protocol
- 24. • AGC Integrated with ePHASORsim
- 25. • Europe • University College Dublin (Ireland) • Aalborg University (Denmark) • Newcastle University (UK) • Enel (Italy) • Kassel University (Germany) • Fraunhofer IWES (Germany) • University of Lille (France) Users/collaborators… • Asia • TNBR (Malaysia) • National Tsing Hua University (Taiwan) • CEPRI (China) • Indian Institute of Technology (India) • Central Power Research Institute (India) • America • GE Energy • PNNL • EPG (Collaboration) • ETAP (Collaboration) • IOWA State University • University of Tennessee • Oupus One Solutions • Universidad Concepcion (Chile)
- 26. Questions…?