Effect of grid‐following VSCs on frequency distribution of power grid
Abstract The increasing penetration of grid‐following voltage source converters (GFL‐VSCs) in the power grid has changed the frequency dynamics of the system. GFL‐VSC follows the frequency of the terminal bus using a phase‐locked loop, therefore it does not establish the frequency in the same manner...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2024-10-01
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| Series: | IET Renewable Power Generation |
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| Online Access: | https://doi.org/10.1049/rpg2.13112 |
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| _version_ | 1841546511655108608 |
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| author | Qingyuan Ma Lei Chen Luyang Li Yong Min Yudan Shi |
| author_facet | Qingyuan Ma Lei Chen Luyang Li Yong Min Yudan Shi |
| author_sort | Qingyuan Ma |
| collection | DOAJ |
| description | Abstract The increasing penetration of grid‐following voltage source converters (GFL‐VSCs) in the power grid has changed the frequency dynamics of the system. GFL‐VSC follows the frequency of the terminal bus using a phase‐locked loop, therefore it does not establish the frequency in the same manner as a synchronous generator. However, previous research has demonstrated that GFL‐VSC without additional frequency controls not only tracks the terminal frequency during the system dynamic process bus also has an influence on it, and derives the relationship between GFL‐VSC and terminal frequency through a simplified model. This paper further derives a more generic relationship considering the influences of q‐axis current and grid voltage amplitude variation, which were ignored in previous research. The relationship has proven to be effective and valid. Several influencing factors are analysed to describe the ability to modify terminal frequency. Then the effect of GFL‐VSCs on the frequency distribution of power grid is studied. The frequency divider formula is improved by incorporating the relationship, which provides a frequency estimation formula applicable for system with multiple GFL‐VSCs. Two system‐level simulations verify the conclusion and related influencing factors are analysed. |
| format | Article |
| id | doaj-art-6b65381d9905496fae068845f9dbc35e |
| institution | Kabale University |
| issn | 1752-1416 1752-1424 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Renewable Power Generation |
| spelling | doaj-art-6b65381d9905496fae068845f9dbc35e2025-01-10T17:41:03ZengWileyIET Renewable Power Generation1752-14161752-14242024-10-0118142619262810.1049/rpg2.13112Effect of grid‐following VSCs on frequency distribution of power gridQingyuan Ma0Lei Chen1Luyang Li2Yong Min3Yudan Shi4Department of Electrical Engineering Tsinghua University Beijing ChinaDepartment of Electrical Engineering Tsinghua University Beijing ChinaDepartment of Electrical Engineering Tsinghua University Beijing ChinaDepartment of Electrical Engineering Tsinghua University Beijing ChinaInternational Education Institute North China Electric Power University (Baoding) Baoding ChinaAbstract The increasing penetration of grid‐following voltage source converters (GFL‐VSCs) in the power grid has changed the frequency dynamics of the system. GFL‐VSC follows the frequency of the terminal bus using a phase‐locked loop, therefore it does not establish the frequency in the same manner as a synchronous generator. However, previous research has demonstrated that GFL‐VSC without additional frequency controls not only tracks the terminal frequency during the system dynamic process bus also has an influence on it, and derives the relationship between GFL‐VSC and terminal frequency through a simplified model. This paper further derives a more generic relationship considering the influences of q‐axis current and grid voltage amplitude variation, which were ignored in previous research. The relationship has proven to be effective and valid. Several influencing factors are analysed to describe the ability to modify terminal frequency. Then the effect of GFL‐VSCs on the frequency distribution of power grid is studied. The frequency divider formula is improved by incorporating the relationship, which provides a frequency estimation formula applicable for system with multiple GFL‐VSCs. Two system‐level simulations verify the conclusion and related influencing factors are analysed.https://doi.org/10.1049/rpg2.13112frequency estimationfrequency modulationfrequency responsepower system simulation |
| spellingShingle | Qingyuan Ma Lei Chen Luyang Li Yong Min Yudan Shi Effect of grid‐following VSCs on frequency distribution of power grid IET Renewable Power Generation frequency estimation frequency modulation frequency response power system simulation |
| title | Effect of grid‐following VSCs on frequency distribution of power grid |
| title_full | Effect of grid‐following VSCs on frequency distribution of power grid |
| title_fullStr | Effect of grid‐following VSCs on frequency distribution of power grid |
| title_full_unstemmed | Effect of grid‐following VSCs on frequency distribution of power grid |
| title_short | Effect of grid‐following VSCs on frequency distribution of power grid |
| title_sort | effect of grid following vscs on frequency distribution of power grid |
| topic | frequency estimation frequency modulation frequency response power system simulation |
| url | https://doi.org/10.1049/rpg2.13112 |
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