Simulation of Low Inertia Power Systems Based on Shifted Frequency Analysis
New types of power system transients with lower time constants are emerging due to the replacement of synchronous generation with converter interfaced generation and are challenging the modeling approaches conventionally applied in power system simulation. Quasi-stationary simulations are based on c...
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| Format: | Article |
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MDPI AG
2021-03-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/7/1860 |
| _version_ | 1797539836821766144 |
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| author | Jan Dinkelbach Ghassen Nakti Markus Mirz Antonello Monti |
| author_facet | Jan Dinkelbach Ghassen Nakti Markus Mirz Antonello Monti |
| author_sort | Jan Dinkelbach |
| collection | DOAJ |
| description | New types of power system transients with lower time constants are emerging due to the replacement of synchronous generation with converter interfaced generation and are challenging the modeling approaches conventionally applied in power system simulation. Quasi-stationary simulations are based on classical phasor models, whereas EMT simulations calculate the instantaneous values of models in the time domain. In addition to these conventional modeling approaches, this paper investigates simulation based on dynamic phasor models, as has been proposed by the Shifted Frequency Analysis. The simulation accuracy of the three modeling approaches was analyzed for characteristic transients from the electromagnetic to the electromechanical phenomena range, including converter control as well as low inertia transients. The analysis was carried out for systems with converter interfaced and synchronous generation whilst considering the simulation step size as a crucial influence parameter. The results show that simulations based on dynamic phasors allow for larger step sizes than simulations that calculate the instantaneous values in the time domain. This can facilitate the simulation of more complex component models and larger grid sizes. In addition, with dynamic phasors, more accurate simulation results were obtained than with classical phasors, in particular—but not exclusively—in a low inertia case. Overall, the presented work demonstrates that dynamic phasors can enable fast and accurate simulations during the transition to low inertia power systems. |
| first_indexed | 2024-03-10T12:51:32Z |
| format | Article |
| id | doaj.art-aa39fb33e6414fabb5e1c121e0808c5e |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T12:51:32Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-aa39fb33e6414fabb5e1c121e0808c5e2023-11-21T13:02:13ZengMDPI AGEnergies1996-10732021-03-01147186010.3390/en14071860Simulation of Low Inertia Power Systems Based on Shifted Frequency AnalysisJan Dinkelbach0Ghassen Nakti1Markus Mirz2Antonello Monti3Institute for Automation of Complex Power Systems, RWTH Aachen University, 52074 Aachen, GermanyInstitute for Automation of Complex Power Systems, RWTH Aachen University, 52074 Aachen, GermanyInstitute for Automation of Complex Power Systems, RWTH Aachen University, 52074 Aachen, GermanyInstitute for Automation of Complex Power Systems, RWTH Aachen University, 52074 Aachen, GermanyNew types of power system transients with lower time constants are emerging due to the replacement of synchronous generation with converter interfaced generation and are challenging the modeling approaches conventionally applied in power system simulation. Quasi-stationary simulations are based on classical phasor models, whereas EMT simulations calculate the instantaneous values of models in the time domain. In addition to these conventional modeling approaches, this paper investigates simulation based on dynamic phasor models, as has been proposed by the Shifted Frequency Analysis. The simulation accuracy of the three modeling approaches was analyzed for characteristic transients from the electromagnetic to the electromechanical phenomena range, including converter control as well as low inertia transients. The analysis was carried out for systems with converter interfaced and synchronous generation whilst considering the simulation step size as a crucial influence parameter. The results show that simulations based on dynamic phasors allow for larger step sizes than simulations that calculate the instantaneous values in the time domain. This can facilitate the simulation of more complex component models and larger grid sizes. In addition, with dynamic phasors, more accurate simulation results were obtained than with classical phasors, in particular—but not exclusively—in a low inertia case. Overall, the presented work demonstrates that dynamic phasors can enable fast and accurate simulations during the transition to low inertia power systems.https://www.mdpi.com/1996-1073/14/7/1860shifted frequency analysisdynamic phasorsreal-time simulationpower electronicsconverter interfaced generationlow inertia |
| spellingShingle | Jan Dinkelbach Ghassen Nakti Markus Mirz Antonello Monti Simulation of Low Inertia Power Systems Based on Shifted Frequency Analysis Energies shifted frequency analysis dynamic phasors real-time simulation power electronics converter interfaced generation low inertia |
| title | Simulation of Low Inertia Power Systems Based on Shifted Frequency Analysis |
| title_full | Simulation of Low Inertia Power Systems Based on Shifted Frequency Analysis |
| title_fullStr | Simulation of Low Inertia Power Systems Based on Shifted Frequency Analysis |
| title_full_unstemmed | Simulation of Low Inertia Power Systems Based on Shifted Frequency Analysis |
| title_short | Simulation of Low Inertia Power Systems Based on Shifted Frequency Analysis |
| title_sort | simulation of low inertia power systems based on shifted frequency analysis |
| topic | shifted frequency analysis dynamic phasors real-time simulation power electronics converter interfaced generation low inertia |
| url | https://www.mdpi.com/1996-1073/14/7/1860 |
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