Open AccessAn investigation of inertia constant in single generator on transient analysis for an isolated electrical network system
Author(s) -
Mohd Saifuzam Jamri,
Muhammad Nizam Kamarudin,
Mohd Luqma Mohd Jamil
Publication year - 2021
Publication title -
indonesian journal of electrical engineering and computer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.241
H-Index - 17
eISSN - 2502-4760
pISSN - 2502-4752
DOI - 10.11591/ijeecs.v23.i3.pp1299-1305
Subject(s) - control theory (sociology) , transient (computer programming) , inertia , electric power system , voltage droop , permanent magnet synchronous generator , bode plot , stability (learning theory) , matlab , transient response , oscillation (cell signaling) , time constant , engineering , voltage , computer science , physics , power (physics) , transfer function , voltage regulator , electrical engineering , chemistry , classical mechanics , biochemistry , control (management) , quantum mechanics , artificial intelligence , machine learning , operating system
An isolated electrical network which fed by an independent generator for a low voltage system is considerable in remote and islandic areas. Although the network system has less complexity in term of system structure, its stability level is crucial due to frequency dynamical responses. An influence of initial stability margin on frequency stability study during contingency situation is a thing rather than being ignored. Here the initial transient response inherently delivers important info such as system inertia and momentarily power deficit. In this paper, an investigation of transient stability responses under different inertia values is carried out. The investigation is carried out by modelling the isolated system in MATLAB/Simulink environment which consists of state-space mathematical equations. It is confirmed that the generator system inertia shapes the initial slope, speed droop and oscillation. For a verification purpose, the influence of system inertia is also analyzed using bode diagram in which system gain and frequency margin are evaluated.