Shaping Frequency Dynamics in Modern Power Systems with Grid-forming Converters
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866918216718090240 |
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| author | Collados-Rodriguez, Carlos Spier, Daniel Westerman Cheah-Mane, Marc Prieto-Araujo, Eduardo Gomis-Bellmunt, Oriol |
| author_facet | Collados-Rodriguez, Carlos Spier, Daniel Westerman Cheah-Mane, Marc Prieto-Araujo, Eduardo Gomis-Bellmunt, Oriol |
| contents | In this paper, frequency dynamics in modern power systems with a high penetration of converter-based generation is analysed. A fundamental analysis of the frequency dynamics is performed to identify the limitations and challenges when the converter penetration is increased. The voltage-source behaviour is found as an essential characteristic of converters to improve the initial frequency derivative of Synchronous Generators (SGs). A detailed small-signal analysis, based on the system's eigenvalues, participation factors and mode shapes, is then performed in a reduced system for different converter penetrations, showing that the flexibility of grid-forming (GFOR) converters as well as the system's inertia reduction may lead to have a more controllable system frequency. First-order frequency responses can be programmed for high converter penetrations, when GFOR operation can impose their dominance over SGs. These results have been validated in the IEEE 118-bus system simulated in PSCAD. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_08161 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Shaping Frequency Dynamics in Modern Power Systems with Grid-forming Converters Collados-Rodriguez, Carlos Spier, Daniel Westerman Cheah-Mane, Marc Prieto-Araujo, Eduardo Gomis-Bellmunt, Oriol Systems and Control In this paper, frequency dynamics in modern power systems with a high penetration of converter-based generation is analysed. A fundamental analysis of the frequency dynamics is performed to identify the limitations and challenges when the converter penetration is increased. The voltage-source behaviour is found as an essential characteristic of converters to improve the initial frequency derivative of Synchronous Generators (SGs). A detailed small-signal analysis, based on the system's eigenvalues, participation factors and mode shapes, is then performed in a reduced system for different converter penetrations, showing that the flexibility of grid-forming (GFOR) converters as well as the system's inertia reduction may lead to have a more controllable system frequency. First-order frequency responses can be programmed for high converter penetrations, when GFOR operation can impose their dominance over SGs. These results have been validated in the IEEE 118-bus system simulated in PSCAD. |
| title | Shaping Frequency Dynamics in Modern Power Systems with Grid-forming Converters |
| topic | Systems and Control |
| url | https://arxiv.org/abs/2411.08161 |