Discovery and Characterization of Cross-Area and Intra-Area SSOs Sensitive to Delay in Droop Control of Grid-Forming Converters
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| Main Authors: | , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866910605151043584 |
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| author | Karunaratne, Lilan Chaudhuri, Nilanjan Ray Yogarathnam, Amirthagunaraj Yue, Meng |
| author_facet | Karunaratne, Lilan Chaudhuri, Nilanjan Ray Yogarathnam, Amirthagunaraj Yue, Meng |
| contents | Subsynchronous oscillations (SSOs) involving grid-forming converters (GFCs) are in a less familiar territory of power system dynamics. This letter reports a new phenomenon namely cross-area SSOs in grids with 100% droop-controlled GFC-based renewable penetration, which was discovered during our study on evaluating the adequacy of quasistationary phasor calculus (QPC) and space phasor calculus (SPC)-based models in capturing SSOs. We present frequency-domain characterization of such oscillatory modes in addition to intra-area SSOs in grids involving GFCs and study the impact of a delay in power-frequency droop feedback loop in regards to their stability. Electromagnetic transient (EMT) simulations validate our findings. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2409_09912 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Discovery and Characterization of Cross-Area and Intra-Area SSOs Sensitive to Delay in Droop Control of Grid-Forming Converters Karunaratne, Lilan Chaudhuri, Nilanjan Ray Yogarathnam, Amirthagunaraj Yue, Meng Systems and Control Subsynchronous oscillations (SSOs) involving grid-forming converters (GFCs) are in a less familiar territory of power system dynamics. This letter reports a new phenomenon namely cross-area SSOs in grids with 100% droop-controlled GFC-based renewable penetration, which was discovered during our study on evaluating the adequacy of quasistationary phasor calculus (QPC) and space phasor calculus (SPC)-based models in capturing SSOs. We present frequency-domain characterization of such oscillatory modes in addition to intra-area SSOs in grids involving GFCs and study the impact of a delay in power-frequency droop feedback loop in regards to their stability. Electromagnetic transient (EMT) simulations validate our findings. |
| title | Discovery and Characterization of Cross-Area and Intra-Area SSOs Sensitive to Delay in Droop Control of Grid-Forming Converters |
| topic | Systems and Control |
| url | https://arxiv.org/abs/2409.09912 |