Experience in using MALTLAB Power System Toolbox (PST) for transient stability study of an AC/DC interconnected power system

AFRICON 2007 ◽  
2007 ◽  
Author(s):  
KA Folly ◽  
B. S. Limbo
Keyword(s):  
Power System ◽  
Transient Stability ◽  
Stability Study ◽  
Interconnected Power System

scholarly journals Design and analysis of transmission-level power system stability control

2021 ◽  
Author(s):  
Tu Phan
Keyword(s):  
Power System ◽  
Transient Stability ◽  
Power System Stability ◽  
Stability Control ◽  
Stability Study ◽  
System Stability ◽  
Voltage Regulator ◽  
Automatic Voltage Regulator ◽  
Excitation Techniques ◽  
System Stabilizer

After the August 14, 2003 blackout, power system stability probelm has received a great deal of attention. This project is focused on the analysis of transient stability following disturbances. The project investigates three generator-excitation techniques for controlling the stability of power system. They are the manual control (constant excitation voltage), the automatic voltage regulator (AVR), and the automatic voltage regulator plus the power system stabilizer (PSS) that basically can be a led-leg compensator using a rotor speed deviation as an input feedback. This project carried out a computer simulation study of the power system stability for various disturbances conditions. The simulation results from the project have shown that AVR coupled PSS generator-excitation control can achieve the best power system stability, comparing to the manual or AVR control. A major contribution of this project is that a computer platform using MatLab/Simulink software was designed and can be used by other researchers for the power system stability study.

Automatic Gain Controller for Variable Speed Wind Turbines

2008 ◽  
Vol 9 (1) ◽  
Author(s):  
Mohamed S ElMoursi
Keyword(s):  
Power System ◽  
Transient Stability ◽  
Reactive Power ◽  
Stability Margin ◽  
Voltage Regulation ◽  
Primary Control ◽  
Voltage Reference ◽  
Voltage Profile ◽  
Frequency Model ◽  
Interconnected Power System

This paper presents a novel controller for DFIG based wind parks, designed to achieve more efficient voltage regulation, reactive power compensation and to enhance the transient stability margin of the interconnected power system. The supervisory-secondary voltage control is used to generate the local voltage reference, providing an improved overall voltage profile, while combining an automatic gain controller (AGC) to improve the transient response of the primary control loop. The controller is implemented and tested with a power system comprising of a lumped, fundamental frequency model of a DFIG based wind park, and hydro and diesel generators connected to the electric grid. The performance of the controller was investigated for both steady-state improvements as well as under extreme contingencies to demonstrate its benefits.

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