Grid Strength Assessment for Inhomogeneous Multi-infeed HVDC Systems via Generalized Short Circuit Ratio
Generalized short circuit ratio (gSCR) for grid strength assessment of multi-infeed high-voltage direct current (MIDC) systems is a rigorous theoretical extension of the traditional SCR, which enables SCR to be extended to MIDC systems. However, gSCR is originally based on the assumption of homogene...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2023-01-01
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| Series: | Journal of Modern Power Systems and Clean Energy |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9841519/ |
| _version_ | 1797770995890651136 |
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| author | Guanzhong Wang Huanhai Xin Di Wu Zhiyi Li Ping Ju |
| author_facet | Guanzhong Wang Huanhai Xin Di Wu Zhiyi Li Ping Ju |
| author_sort | Guanzhong Wang |
| collection | DOAJ |
| description | Generalized short circuit ratio (gSCR) for grid strength assessment of multi-infeed high-voltage direct current (MIDC) systems is a rigorous theoretical extension of the traditional SCR, which enables SCR to be extended to MIDC systems. However, gSCR is originally based on the assumption of homogeneous MIDC systems, in which all high-voltage direct current (HVDC) converters have an identical control configuration, thus presenting challenges to applications of gSCR to inhomogeneous MIDC systems. To weaken this assumption, this paper applies matrix perturbation theory to explore the possibility of utilization of gSCR into inhomogeneous MIDC systems. Results of numerical experiments show that in inhomogeneous MIDC systems, the previously proposed gSCR can still be used without modification. However, critical gSCR (CgSCR) must be redefined by considering the characteristics of control configurations of HVDC converter. Accordingly, the difference between gSCR and redefined CgSCR can effectively quantify the pertinent AC grid strength in terms of the static-voltage stability margin. The performance of the proposed method is demonstrated in a triple-infeed inhomogeneous line commutated converter based high-voltage direct current (LCC-HVDC) system. |
| first_indexed | 2024-03-12T21:30:05Z |
| format | Article |
| id | doaj.art-f3c011c8138044e3b8953d9ce06a7846 |
| institution | Directory Open Access Journal |
| issn | 2196-5420 |
| language | English |
| last_indexed | 2024-03-12T21:30:05Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | Journal of Modern Power Systems and Clean Energy |
| spelling | doaj.art-f3c011c8138044e3b8953d9ce06a78462023-07-27T23:00:27ZengIEEEJournal of Modern Power Systems and Clean Energy2196-54202023-01-011141370137410.35833/MPCE.2021.0008149841519Grid Strength Assessment for Inhomogeneous Multi-infeed HVDC Systems via Generalized Short Circuit RatioGuanzhong Wang0Huanhai Xin1Di Wu2Zhiyi Li3Ping Ju4Zhejiang University,Department of Electrical Engineering,Hangzhou,China,310027Zhejiang University,Department of Electrical Engineering,Hangzhou,China,310027North Dakota State University,Department of Electrical and Computer Engineering,Fargo,USA,58102Zhejiang University,Department of Electrical Engineering,Hangzhou,China,310027Hohai University,College of Energy and Electrical Engineering,Nanjing,China,211100Generalized short circuit ratio (gSCR) for grid strength assessment of multi-infeed high-voltage direct current (MIDC) systems is a rigorous theoretical extension of the traditional SCR, which enables SCR to be extended to MIDC systems. However, gSCR is originally based on the assumption of homogeneous MIDC systems, in which all high-voltage direct current (HVDC) converters have an identical control configuration, thus presenting challenges to applications of gSCR to inhomogeneous MIDC systems. To weaken this assumption, this paper applies matrix perturbation theory to explore the possibility of utilization of gSCR into inhomogeneous MIDC systems. Results of numerical experiments show that in inhomogeneous MIDC systems, the previously proposed gSCR can still be used without modification. However, critical gSCR (CgSCR) must be redefined by considering the characteristics of control configurations of HVDC converter. Accordingly, the difference between gSCR and redefined CgSCR can effectively quantify the pertinent AC grid strength in terms of the static-voltage stability margin. The performance of the proposed method is demonstrated in a triple-infeed inhomogeneous line commutated converter based high-voltage direct current (LCC-HVDC) system.https://ieeexplore.ieee.org/document/9841519/Generalized short circuit ratio (gSCR)multi-infeed high-voltage direct current systemmodal perturbationstatic-voltage stability |
| spellingShingle | Guanzhong Wang Huanhai Xin Di Wu Zhiyi Li Ping Ju Grid Strength Assessment for Inhomogeneous Multi-infeed HVDC Systems via Generalized Short Circuit Ratio Journal of Modern Power Systems and Clean Energy Generalized short circuit ratio (gSCR) multi-infeed high-voltage direct current system modal perturbation static-voltage stability |
| title | Grid Strength Assessment for Inhomogeneous Multi-infeed HVDC Systems via Generalized Short Circuit Ratio |
| title_full | Grid Strength Assessment for Inhomogeneous Multi-infeed HVDC Systems via Generalized Short Circuit Ratio |
| title_fullStr | Grid Strength Assessment for Inhomogeneous Multi-infeed HVDC Systems via Generalized Short Circuit Ratio |
| title_full_unstemmed | Grid Strength Assessment for Inhomogeneous Multi-infeed HVDC Systems via Generalized Short Circuit Ratio |
| title_short | Grid Strength Assessment for Inhomogeneous Multi-infeed HVDC Systems via Generalized Short Circuit Ratio |
| title_sort | grid strength assessment for inhomogeneous multi infeed hvdc systems via generalized short circuit ratio |
| topic | Generalized short circuit ratio (gSCR) multi-infeed high-voltage direct current system modal perturbation static-voltage stability |
| url | https://ieeexplore.ieee.org/document/9841519/ |
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