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.
Keywords: Excitation booster; Bus fed static excitation system; Fault ride through capability; Grid codesTransient stability; WAMS; WACS
Electric Power Systems Research. Volume: 189 Issue: 106622 Pages: 1-6
JCR Impact Factor and WoS quartile: 3.022 - Q2 (2018)
DOI reference: 10.1016/j.epsr.2020.106622
Published on paper: December 2020. Published on-line: August 2020.
L. Díez Maroto, J. Renedo, L. Rouco, F. Fernández-Bernal. Wide area controllers for excitation boosters for transient stability improvement. Electric Power Systems Research. vol. 189, no. 106622, pp. 1-6, December 2020. [Online: August 2020]