Small‐signal analysis of multiple virtual synchronous machines to enhance frequency stability of grid‐connected high renewables
Abstract The virtual synchronous machine technology is considered as an important technique to effectively control the shortcomings of renewable energy‐based power electronics interfaces, providing backup inertia and regulating grid stability. Conventionally, the virtual synchronous machine with a l...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-04-01
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| Series: | IET Generation, Transmission & Distribution |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/gtd2.12101 |
| _version_ | 1811183753882501120 |
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| author | Thongchart Kerdphol Fathin Saifur Rahman Masayuki Watanabe Yasunori Mitani Komsan Hongesombut Veena Phunpeng Issarachai Ngamroo Dirk Turschner |
| author_facet | Thongchart Kerdphol Fathin Saifur Rahman Masayuki Watanabe Yasunori Mitani Komsan Hongesombut Veena Phunpeng Issarachai Ngamroo Dirk Turschner |
| author_sort | Thongchart Kerdphol |
| collection | DOAJ |
| description | Abstract The virtual synchronous machine technology is considered as an important technique to effectively control the shortcomings of renewable energy‐based power electronics interfaces, providing backup inertia and regulating grid stability. Conventionally, the virtual synchronous machine with a large capacity is responsible for controlling the entire grid stability against renewable penetration. It is usually operated as a centralised control system. But what if virtual synchronous machines with small capacities are independently operated by their additional droop control schemes, and will they present better performance than the single virtual synchronous machine? This study proposes the multiple virtual synchronous machine system with different active power‐frequency (P‐f) droop characteristics to improve inertia support regarding frequency stability improvement. The comprehensive small‐signal modelling of the multiple virtual synchronous machine unit is designed to include the additional P‐f droop characteristics. Then, the dynamic characteristics (steady‐state and transient responses) and static stability of the multiple virtual synchronous machines are compared with the single virtual synchronous machine at the same rated capacity in both eigenvalue/sensitivity‐domain and time‐domain analysis. The obtained results reveal that the system with the presence of several virtual synchronous machines is more stable than the system with single virtual synchronous machine, maintaining stable and secure system operation during the contingency. |
| first_indexed | 2024-04-11T09:52:20Z |
| format | Article |
| id | doaj.art-d88bbc6a0b444ce086725c8ebb65494f |
| institution | Directory Open Access Journal |
| issn | 1751-8687 1751-8695 |
| language | English |
| last_indexed | 2024-04-11T09:52:20Z |
| publishDate | 2021-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Generation, Transmission & Distribution |
| spelling | doaj.art-d88bbc6a0b444ce086725c8ebb65494f2022-12-22T04:30:45ZengWileyIET Generation, Transmission & Distribution1751-86871751-86952021-04-011581273128910.1049/gtd2.12101Small‐signal analysis of multiple virtual synchronous machines to enhance frequency stability of grid‐connected high renewablesThongchart Kerdphol0Fathin Saifur Rahman1Masayuki Watanabe2Yasunori Mitani3Komsan Hongesombut4Veena Phunpeng5Issarachai Ngamroo6Dirk Turschner7Faculty of Engineering, Department of Electrical and Electronic Engineering Kyushu Institute of Technology Tobata‐ku, Kitakyushu‐shi Fukuoka 804‐8550 JapanSchool of Electrical Engineering and Informatics Institut Teknologi Bandung Bandung Jawa Barat IndonesiaFaculty of Engineering, Department of Electrical and Electronic Engineering Kyushu Institute of Technology Tobata‐ku, Kitakyushu‐shi Fukuoka 804‐8550 JapanFaculty of Engineering, Department of Electrical and Electronic Engineering Kyushu Institute of Technology Tobata‐ku, Kitakyushu‐shi Fukuoka 804‐8550 JapanFaculty of Engineering, Department of Electrical Engineering Kasetsart University Bangkok ThailandInstitute of Engineering, School of Mechanical Engineering Suranaree University of Technology Nakhon Ratchasima ThailandFaculty of Engineering, Department of Electrical Engineering King Mongkut's Institute of Technology Ladkrabang Bangkok ThailandInstitute of Electrical Power Engineering and Energy Systems Clausthal University of Technology Clausthal‐Zellerfeld GermanyAbstract The virtual synchronous machine technology is considered as an important technique to effectively control the shortcomings of renewable energy‐based power electronics interfaces, providing backup inertia and regulating grid stability. Conventionally, the virtual synchronous machine with a large capacity is responsible for controlling the entire grid stability against renewable penetration. It is usually operated as a centralised control system. But what if virtual synchronous machines with small capacities are independently operated by their additional droop control schemes, and will they present better performance than the single virtual synchronous machine? This study proposes the multiple virtual synchronous machine system with different active power‐frequency (P‐f) droop characteristics to improve inertia support regarding frequency stability improvement. The comprehensive small‐signal modelling of the multiple virtual synchronous machine unit is designed to include the additional P‐f droop characteristics. Then, the dynamic characteristics (steady‐state and transient responses) and static stability of the multiple virtual synchronous machines are compared with the single virtual synchronous machine at the same rated capacity in both eigenvalue/sensitivity‐domain and time‐domain analysis. The obtained results reveal that the system with the presence of several virtual synchronous machines is more stable than the system with single virtual synchronous machine, maintaining stable and secure system operation during the contingency.https://doi.org/10.1049/gtd2.12101Power system controlSynchronous machinesVoltage controlControl of electric power systemsDistributed power generation |
| spellingShingle | Thongchart Kerdphol Fathin Saifur Rahman Masayuki Watanabe Yasunori Mitani Komsan Hongesombut Veena Phunpeng Issarachai Ngamroo Dirk Turschner Small‐signal analysis of multiple virtual synchronous machines to enhance frequency stability of grid‐connected high renewables IET Generation, Transmission & Distribution Power system control Synchronous machines Voltage control Control of electric power systems Distributed power generation |
| title | Small‐signal analysis of multiple virtual synchronous machines to enhance frequency stability of grid‐connected high renewables |
| title_full | Small‐signal analysis of multiple virtual synchronous machines to enhance frequency stability of grid‐connected high renewables |
| title_fullStr | Small‐signal analysis of multiple virtual synchronous machines to enhance frequency stability of grid‐connected high renewables |
| title_full_unstemmed | Small‐signal analysis of multiple virtual synchronous machines to enhance frequency stability of grid‐connected high renewables |
| title_short | Small‐signal analysis of multiple virtual synchronous machines to enhance frequency stability of grid‐connected high renewables |
| title_sort | small signal analysis of multiple virtual synchronous machines to enhance frequency stability of grid connected high renewables |
| topic | Power system control Synchronous machines Voltage control Control of electric power systems Distributed power generation |
| url | https://doi.org/10.1049/gtd2.12101 |
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