Modeling and Application of a Variable-Speed Synchronous Condenser Under New-Type Power Systems.
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| Title: | Modeling and Application of a Variable-Speed Synchronous Condenser Under New-Type Power Systems. |
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| Authors: | Luo, Wei1 (AUTHOR) luowei995@njust.edu.cn, Huo, Qiantao2,3 (AUTHOR), Wu, Fuxia3,4 (AUTHOR) |
| Source: | Energies (19961073). May2026, Vol. 19 Issue 9, p2020. 24p. |
| Subject Terms: | *Synchronous capacitors, *Reactive power control, *Electric power systems, *Electric power system management, *Electric power system stability |
| Abstract: | With the increasing penetration of wind and solar renewable energy into modern power systems, grids exhibit 'dual-high' (i.e., a high proportion of both renewable energy and power electronic devices) and 'dual-low' (i.e., low equivalent rotational inertia and low short-circuit capacity) structural characteristics. This leads to critical challenges, notably insufficient short-circuit capacity, declining voltage and frequency stability, and weakened system damping. To address the stability requirements of new power systems, this study proposes and systematically investigates a variable-speed synchronous condenser based on AC excitation technology. The research encompasses the operational principles, starting mechanisms, and control strategies of the device, with a particular focus on analyzing its stator-flux-oriented vector control method and active–reactive power decoupling regulation mechanism. By independently adjusting the frequency, amplitude, and phase of the AC excitation on the rotor side, the system achieves a millisecond-level dynamic reactive power response, rapid frequency support, and self-starting capability without the need for external starting devices. To validate the effectiveness of the theoretical analysis and engineering practicality, this study presents grid-connected operational tests using a 3600 kVar engineering prototype at a wind farm. The test results demonstrate that the variable-speed synchronous condenser performs excellently in speed regulation, dynamic reactive power response, and primary frequency modulation. It effectively provides short-circuit capacity, enhances system damping, and significantly improves the voltage and frequency stability of power grids with high penetration of renewable energy. This study offers innovative technical pathways and empirical evidence for constructing a stability support system that meets the developmental needs of new power systems. It holds significant theoretical value and engineering guidance for promoting the smooth transition of power grids from synchronous machine-dominated to power electronics-based architectures. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
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| FullText | Links: – Type: pdflink Text: Availability: 1 |
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| Header | DbId: enr DbLabel: Energy & Power Source An: 193715916 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Modeling and Application of a Variable-Speed Synchronous Condenser Under New-Type Power Systems. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Luo%2C+Wei%22">Luo, Wei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> luowei995@njust.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Huo%2C+Qiantao%22">Huo, Qiantao</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Fuxia%22">Wu, Fuxia</searchLink><relatesTo>3,4</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. May2026, Vol. 19 Issue 9, p2020. 24p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Synchronous+capacitors%22">Synchronous capacitors</searchLink><br />*<searchLink fieldCode="DE" term="%22Reactive+power+control%22">Reactive power control</searchLink><br />*<searchLink fieldCode="DE" term="%22Electric+power+systems%22">Electric power systems</searchLink><br />*<searchLink fieldCode="DE" term="%22Electric+power+system+management%22">Electric power system management</searchLink><br />*<searchLink fieldCode="DE" term="%22Electric+power+system+stability%22">Electric power system stability</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: With the increasing penetration of wind and solar renewable energy into modern power systems, grids exhibit 'dual-high' (i.e., a high proportion of both renewable energy and power electronic devices) and 'dual-low' (i.e., low equivalent rotational inertia and low short-circuit capacity) structural characteristics. This leads to critical challenges, notably insufficient short-circuit capacity, declining voltage and frequency stability, and weakened system damping. To address the stability requirements of new power systems, this study proposes and systematically investigates a variable-speed synchronous condenser based on AC excitation technology. The research encompasses the operational principles, starting mechanisms, and control strategies of the device, with a particular focus on analyzing its stator-flux-oriented vector control method and active–reactive power decoupling regulation mechanism. By independently adjusting the frequency, amplitude, and phase of the AC excitation on the rotor side, the system achieves a millisecond-level dynamic reactive power response, rapid frequency support, and self-starting capability without the need for external starting devices. To validate the effectiveness of the theoretical analysis and engineering practicality, this study presents grid-connected operational tests using a 3600 kVar engineering prototype at a wind farm. The test results demonstrate that the variable-speed synchronous condenser performs excellently in speed regulation, dynamic reactive power response, and primary frequency modulation. It effectively provides short-circuit capacity, enhances system damping, and significantly improves the voltage and frequency stability of power grids with high penetration of renewable energy. This study offers innovative technical pathways and empirical evidence for constructing a stability support system that meets the developmental needs of new power systems. It holds significant theoretical value and engineering guidance for promoting the smooth transition of power grids from synchronous machine-dominated to power electronics-based architectures. [ABSTRACT FROM AUTHOR] |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=193715916 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/en19092020 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 24 StartPage: 2020 Subjects: – SubjectFull: Synchronous capacitors Type: general – SubjectFull: Reactive power control Type: general – SubjectFull: Electric power systems Type: general – SubjectFull: Electric power system management Type: general – SubjectFull: Electric power system stability Type: general Titles: – TitleFull: Modeling and Application of a Variable-Speed Synchronous Condenser Under New-Type Power Systems. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Luo, Wei – PersonEntity: Name: NameFull: Huo, Qiantao – PersonEntity: Name: NameFull: Wu, Fuxia IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 19961073 Numbering: – Type: volume Value: 19 – Type: issue Value: 9 Titles: – TitleFull: Energies (19961073) Type: main |
| ResultId | 1 |
