Wide area controllers for excitation boosters for transient stability improvement

Excitation boosters (EBs) are one of the most cost-effective solutions to improve Fault Ride Through (FRT) capability of synchronous generators. However, they may lead to undesired behavior in multi-machine systems when governed by controllers that use local measurements. EB controllers based on a W...

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Bibliographic Details
Published in:Electric power systems research 2020-12, Vol.189, p.106622, Article 106622
Main Authors: Díez-Maroto, Luis, Renedo, Javier, Rouco, Luis, Fernández-Bernal, Fidel
Format: Article
Language:English
Subjects:
Bus fed static excitation system
Control stability
Controllers
Electricity distribution
Excitation
Excitation booster
Fault ride through capability
Generators
Grid codes
Transient stability
WACS
WAMS
Wide area networks
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Summary:Excitation boosters (EBs) are one of the most cost-effective solutions to improve Fault Ride Through (FRT) capability of synchronous generators. However, they may lead to undesired behavior in multi-machine systems when governed by controllers that use local measurements. EB controllers based on a Wide Area Control System (WACS) have proved to be an effective solution to improve the overall transient stability of a multi-machine system. This paper compares two WACS-based EBs; one proposed in a previous work and a variant controller proposed here. In the comparison of WACS-based EBs, performance, design, implementation aspects and impact of communication latency are analyzed and discussed in detail.
ISSN:0378-7796
1873-2046
DOI:10.1016/j.epsr.2020.106622