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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2402.12057 |
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| _version_ | 1866909111518494720 |
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| author | Zong, Haoxiang Zhang, Chen Cai, Xu Molinas, Marta |
| author_facet | Zong, Haoxiang Zhang, Chen Cai, Xu Molinas, Marta |
| contents | Loop gain-based eigen-sensitivity (LGES) is a useful frequency-domain tool for oscillation diagnosis of converter-based system. However, the existing theory is still scant in two aspects: participation factor (PF) is bound up with the frequency-domain modal characteristic that does not necessarily point to the stability as that of the time-domain eigen-sensitivity (i.e., PF of oscillation mode); a systematic LGES analysis framework containing both component- and parameter- level sensitivity is missing. These two factors hinder the application of LGES method on the proper evaluation of stability effects, which are closely related with the time-domain oscillation mode. To address these issues, this paper proposes a multilayer LGES method directed to the oscillation mode, and a full set of indices like PF, component and parameter sensitivity are established. The link from the eigen-sensitivity of frequency domain to that of time domain is revealed, through which it is shown how the proposed LGES method can facilitate the control parameter tuning-guided oscillation suppression. The effectiveness of the proposed LGES method is validated via case studies conducted on a generic AC/DC converter-based system. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_12057 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A Multilayer Eigen-Sensitivity Method Using Loop Gain Model for Oscillation Diagnosis of Converter-Based System Zong, Haoxiang Zhang, Chen Cai, Xu Molinas, Marta Applied Physics Dynamical Systems Loop gain-based eigen-sensitivity (LGES) is a useful frequency-domain tool for oscillation diagnosis of converter-based system. However, the existing theory is still scant in two aspects: participation factor (PF) is bound up with the frequency-domain modal characteristic that does not necessarily point to the stability as that of the time-domain eigen-sensitivity (i.e., PF of oscillation mode); a systematic LGES analysis framework containing both component- and parameter- level sensitivity is missing. These two factors hinder the application of LGES method on the proper evaluation of stability effects, which are closely related with the time-domain oscillation mode. To address these issues, this paper proposes a multilayer LGES method directed to the oscillation mode, and a full set of indices like PF, component and parameter sensitivity are established. The link from the eigen-sensitivity of frequency domain to that of time domain is revealed, through which it is shown how the proposed LGES method can facilitate the control parameter tuning-guided oscillation suppression. The effectiveness of the proposed LGES method is validated via case studies conducted on a generic AC/DC converter-based system. |
| title | A Multilayer Eigen-Sensitivity Method Using Loop Gain Model for Oscillation Diagnosis of Converter-Based System |
| topic | Applied Physics Dynamical Systems |
| url | https://arxiv.org/abs/2402.12057 |