Open AccessModelling and Simulation for Small Signal Stability of Multi-machine Power System under Various Disturbance Conditions
Author(s) -
Ohnmar Swe,
Soe Win,
Zarchi Linn
Publication year - 2020
Publication title -
jaree (journal on advanced research in electrical engineering)
Language(s) - English
Resource type - Journals
eISSN - 2580-0361
pISSN - 2579-6216
DOI - 10.12962/j25796216.v4.i1.103
Subject(s) - control theory (sociology) , inertia , electric power system , disturbance (geology) , torque , time domain , slip (aerodynamics) , computer science , perturbation (astronomy) , matlab , signal (programming language) , engineering , power (physics) , physics , paleontology , programming language , control (management) , classical mechanics , quantum mechanics , artificial intelligence , computer vision , biology , operating system , aerospace engineering , thermodynamics
This paper presents the small signal stability of multi-machine power system over the 58-Bus, 26-Machine, Yangon Distribution Network and is validated with MATLAB software under various disturbance conditions. Time-domain solution analysis is employed to determine the small signal dynamic behavior of test system. Transtability model is used to perform time-domain simulation in SIMULINK. The simulation is carried out for normal condition, reference voltage of regulator (Vref) disturbance, mechanical torque (Tm)disturbance and network (fault) disturbance and the conditions of change in center of inertia for rotor angle (delta COI), slip for center of inertia (slip COI), field current and mechanical torque are observed. According to the simulation results, perturbation of Vref shows only instability on the system. But ramping of Tm and network disturbance can cause large disturbance on the system and unstable conditions can be observed.