Energy Center Lab
Digital Real-Time Co-simulation of Kundur Two Area Power System
keywords CO-SIMULATION TECHNIQUES, DISTRIBUTED SYSTEM, DISTRIBUTED SYSTEMS, SIMULATION, SMART CITITES, SMART GRID, SMART GRIDS
Reference persons EDOARDO PATTI, ENRICO PONS
External reference persons Luca Barbierato (firstname.lastname@example.org)
Research Groups ELECTRONIC DESIGN AUTOMATION - EDA, Energy Center Lab, GR-06 - ELECTRONIC DESIGN AUTOMATION - EDA, ICT4SS - ICT FOR SMART SOCIETIES
Thesis type EXPERIMENTAL/MODELLING
Description Owing to the limits of pure software-based simulations, rising interest in testing real-world hardware has focused power system researchers' attention on real-time simulation implemented with commercial Digital Real-Time Simulators (DRTS). Real-time paradigm refers to a software model of a physical system that can execute at the same rate as the real-world physical system following the wall clock time. Simulations of such a paradigm are performed in a discrete constant time-stepped environment (i.e., fixed time step simulation) in which they must solve the internal state equation of the system under test in less time than the fixed time step duration. Conversely, an over-run error occurs. The time constraint of a real-time simulation varies depending on the application. For instance, EMT simulations require around tens of microseconds fixed time step duration to depict the detailed dynamics of large AC systems.
The main difficulty for commercial DRTS is the significant computational resources required for the solution of detailed EMT models, thereby limiting the size of the AC system that can be accurately simulated. To cope with that limitation, a growing effort of the power system research community is concentrating on combining two or more DRTS exploiting novel methodologies, communication protocols, and standards, such as co-simulation techniques. In power system research, such techniques allow splitting the power system under analysis into sub-networks, each one executed on a DRTS, exploiting high-bandwidth communication channels (e.g., fiber optic links) to exchange interface voltages and currents between each other. However, such interconnections could lead to numerical instability and accuracy issues due to communication latency among DRTS.
In this dissertation project, a novel digital real-time co-simulation technique will be applied to allow the point-to-point interconnection of two DRTS (i.e., OPAL-RT and RTDS). The power system scenario will be split by implementing an adapter based on the Distributed Parameter Line model that permits to
eliminate the effect of the communication latency experienced by the co-simulation setup. The validation of the co-simulation technique will be accomplished by implementing and validating the Kundur Two Area System scenario to demonstrate that, also in this challenging task, the co-simulation results replicate standalone results with extreme accuracy.
The aim of the thesis consists of:
1. Analysis of power system stabilizer and control theory of synchronous generator
2. Analysis of the Distributed Parameter Line (DPL) model
3. Analysis of the power_KundurTwoAreaSystem Simulink model
4. Real-Time Application of the power_KundurTwoAreaSystem on the OPAL-RT target
5. Implementation of the power_KundurTwoAreaSystem on the RSCAD target
6. Validation of the OPAL-RT and RSCAD models
7. Digital Real-Time Co-simulation of the Kundur Two Area System
8. Comparison of standalone and co-simulated results
Deadline 01/12/2023 PROPONI LA TUA CANDIDATURA