Electric Power Library - Overview
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The Modelica Electric Power Library is ideal for efficient modeling, simulation and analysis of electric power systems, including AC three-phase (abc, dq0, rst) and one-phase AC and DC systems. The models can be used in both steady-state and transient mode for simulation and initialization. The library’s components provide standardized interfaces to thermal and mechanical domains, and are easy to combine with other libraries to represent electric power and actuation. Application domains include power stations and rail vehicles.
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Electric Power Library - Overview
- 2. ©2019 Modelon. About Electric Power Library Key Benefits Key Capabilities Key Applications Library Contents Modelon Compatibility AGENDA
- 3. ©2019 Modelon. • Simulation of electric power systems for • Testing of new control strategies • Development and verification of new designs • Commissioning • Analysis of dynamics • Failure investigation • From generation to consumption of electric power • Including transmission and distribution • Developed together with power expert Hans-Juerg Wiesmann (ABB), Switzerland ABOUT ELECTRIC POWER LIBRARY
- 4. ©2019 Modelon. • Well-suited for control design applications where simulations early in the design process are valuable • Multi-domain capabilities – power electronics, mechanics and thermal dynamics can be captured in the same tool, saving time and simplifying modeling • Enables safe planning and commissioning tests by initial practice in a virtual environment • Get quick insights with fast and robust simulations • Equation based, state-of-the-art representation of physics provides accurate results • Easy to integrate into any application domain KEY BENEFITS
- 5. ©2019 Modelon. KEY CAPABILITIES For use in a wide range of electric applications in multiple industries: • Power generation systems and grids • Autonomous electrical systems: aircraft, ships, trains, hybrid vehicles • Wind power and renewables • Power Electronics • Islanding power generation • Electrical drive systems, variable frequency drives • Compatible with Thermal Power Library and Hydro Power Library • Real-time capable Flexible fidelity level ensures appropriate time frame resolution • Average and switched inverter models • Dynamic and steady-state
- 7. ©2019 Modelon. Stabilizing Hydro Power for the Electrical Grid Objective CASE STUDY Results Using Modelon’s Hydro and Electric Power Library, engineers set out to improve the understanding of Iceland’s Fossarvirkjun power plant by investigating load rejection and exploring worst-case scenarios during complete plant shut downs. • Electrical grid that is better prepared to handle disturbances and safety critical scenarios • Improved operation with a lower closing time limit, enabling faster reactions to critical disturbances In collaboration with:
- 8. ©2019 Modelon. Over-Voltage Failure Investigation Objective CASE STUDY Results Using Modelon’s Electric Power Library, researchers set out to find the root-cause of an over-voltage phenomenon in the Grunnåi power station in Norway, which caused damage on the equipment. • Simulations bring understanding of the system dynamics – the reactive power in the grid is large enough to initiate self- excitation of the asynchronous generators • Correct protection relay settings crucial to ensure safe operation and prevent over- voltages In collaboration with:
- 9. ©2019 Modelon. Verify Wind Power Plant Control Objective CASE STUDY Results Evaluate and verify wind power control implementation to meet the Swedish grid code requirements. • Control implementation verified – passing all grid code tests • Original control code (written in C++) interfaced with Modelica In collaboration with:
- 10. ©2019 Modelon. Smart Grid – Optimizing Production Objective CASE STUDY Results Evaluate production planning strategies in a conceptual smart grid, taking pricing trends and consumption behavior into account. • Medium voltage grid battery storage able to reduce costs by charging during times of low electricity price and discharge during times of high price. • Reduced total electricity cost by delaying non- essential loads and charging electric vehicle during the night. In collaboration with:
- 12. ©2019 Modelon. • DC components • AC 1-phase components • AC 3-phase • abc (non-transformed) • dqo (transformed) • symmetric dq (transformed) • Exciters, governors, modulation • Mechanical components • Ideal semiconductors and phase modules LIBRARY CONTENTS
- 13. ©2019 Modelon. • 3-phase representations • abc • Most common, non-transformed • Does not allow fast integration (AC is periodic), except in special cases • dqo • Using Park-transformed signals • Rotating reference frame • Fast integration of linear systems without loss of transient information • dq • Similar to dqo, but assumes balanced three phase currents • Omitting zero component LIBRARY CONTENTS
- 14. ©2019 Modelon. • Examples displaying typical use-cases and capabilities LIBRARY CONTENTS Islanding Tie line
- 15. ©2019 Modelon. • Generators • Turbine-generator systems • Include electrical and mechanical models • Replaceable architecture makes it possible to choose appropriate fidelity level LIBRARY CONTENTS
- 16. ©2019 Modelon. • Inverters and Rectifiers • User can choose appropriate fidelity level: • Switched • Time averaged • Switched details of current and voltage ignored • Fast simulations suited for longer simulations and system studies LIBRARY CONTENTS
- 17. ©2019 Modelon. • Lines • Various transmission line models: • PIline • Transmission line modelled as discretized telegraph-equation, 'pi-elements’ • RXline • Switched details of current and voltage ignored • Fast models suited for longer simulations and system studies • Support of fault simulation along the lines LIBRARY CONTENTS
- 18. ©2019 Modelon. • Loads • Lumped electrical power loads • Various versions of capacitive, inductive adn resistive loads • Machines • Asynchronous and synchronous electrical machines • Transformers • 2 and 3-windings • Ideal and non-ideal with saturation effects LIBRARY CONTENTS
- 19. ©2019 Modelon. • Predefined data configurations • Quickly set-up a system • Cover standard components • Breakers, lines, machines, semiconductors, transformers and turbines • SI or in pu- ('per unit') units option LIBRARY CONTENTS
- 20. ©2019 Modelon. • System component • System wide settings • Transient or steady-state simulation mode • Frequency type: parameter, signal, or average (machine-dependent) system frequency • Lower and upper limit-frequencies LIBRARY CONTENTS
- 21. ©2019 Modelon. • Electrical Power Library is delivered together with Modelon Base Library • Tools and models from Modelon Base Library which extend the capability of Electric Power Library include • Thermal components for cooling applications • Energy storage models (batteries, table based fuel cells, etc.) • Auto-tuner for automatic control design LIBRARY CONTENTS
- 23. ©2019 Modelon. • Thermal Power Library • Hydro Power Library RECOMMENDED MODELON LIBRARY COMPATIBILITY
- 24. ©2019 Modelon. LATEST RELEASE: 2019.2 24
- 25. ©2019 Modelon. RELEASE:2019.2 New Features • Electric Power Library 2.7 is based on Modelon Base Library 3.4 and Modelica Standard Library 3.2.3. It is also compatible with Modelica Standard Library 3.2.2. 25
Hinweis der Redaktion
- This case study details how one of Germany’s largest thermal power plants has improved their primary control reserves; resulting in an electric grid that can integrate a higher number of renewable energy sources, including wind and solar. Modelon’s Thermal Power Library enabled researchers to develop a model consisting of different sub-sections, coupled through fluid-connections and a control signal bus. Nearly 11,000 differential-algebraic equations are used to describe the system which includes about 500 thermodynamic states.
- This case study details how one of Germany’s largest thermal power plants has improved their primary control reserves; resulting in an electric grid that can integrate a higher number of renewable energy sources, including wind and solar. Modelon’s Thermal Power Library enabled researchers to develop a model consisting of different sub-sections, coupled through fluid-connections and a control signal bus. Nearly 11,000 differential-algebraic equations are used to describe the system which includes about 500 thermodynamic states.
- This case study details how one of Germany’s largest thermal power plants has improved their primary control reserves; resulting in an electric grid that can integrate a higher number of renewable energy sources, including wind and solar. Modelon’s Thermal Power Library enabled researchers to develop a model consisting of different sub-sections, coupled through fluid-connections and a control signal bus. Nearly 11,000 differential-algebraic equations are used to describe the system which includes about 500 thermodynamic states.
- This case study details how one of Germany’s largest thermal power plants has improved their primary control reserves; resulting in an electric grid that can integrate a higher number of renewable energy sources, including wind and solar. Modelon’s Thermal Power Library enabled researchers to develop a model consisting of different sub-sections, coupled through fluid-connections and a control signal bus. Nearly 11,000 differential-algebraic equations are used to describe the system which includes about 500 thermodynamic states.