Open AccessInertia estimation of diesel generators based on modified loading rejection tests
Author(s) -
Lin ChienHung,
Wu ChiJui,
Yang JunZhe,
Lu ChanNan
Publication year - 2021
Publication title -
iet generation, transmission and distribution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 110
eISSN - 1751-8695
pISSN - 1751-8687
DOI - 10.1049/gtd2.12188
Subject(s) - inertia , tripping , control theory (sociology) , diesel generator , frequency deviation , transient (computer programming) , electric power system , generator (circuit theory) , diesel fuel , power (physics) , controller (irrigation) , automatic frequency control , engineering , computer science , automotive engineering , physics , control (management) , electrical engineering , agronomy , circuit breaker , classical mechanics , quantum mechanics , artificial intelligence , biology , operating system
An inertia identification approach has been proposed for diesel generators by using the modified load rejection procedures. Large frequency deviation problems often occur in the Kinmen island power system where many diesel generators are used. In order to avoid erroneous evaluation of frequency deviation caused by generator tripping, one of the critical issues in system planning is to accurately estimate the maximum frequency deviation during system outage events. The main factors that influence the frequency deviation include the generator inertia (H), damping constant (D), and governor controller parameters. In order to improve the accuracy of the transient stability analysis to obtain more actual frequency deviation, it is critical to have more accurate inertia values of these diesel generators. This paper proposes a useful approach to evaluate reasonable inertia values. With the identified inertia values of diesel generators, the frequency responses of the Kinmen power system obtained from PSS/E simulation are more consistent with the field measurement results.