Voltage stability study of the Iraqi power grid
Dissertant
Thesis advisor
al-Rabii, Rashid Hamid Matar Salman
University
University of Technology
Faculty
-
Department
Department of Electromechanical Engineering
University Country
Iraq
Degree
Master
Degree Date
2011
English Abstract
-It has become an important task for many voltage stability studies to find a voltage stability index.
These indices provide reliable information about proximity of voltage instability in a power system.
In this work, the mathematical formulation of the most common voltage stability indices is presented.
An indicator for voltage stability assessment based on measurements is proposed, which aims to detect the most vulnerable load buses of an electrical power system.
The proposed indicator (L indicator) is derived from the basic Kirchhoff-laws.
The advantages of this indicator lie in the simple numerical calculation and the short computation time, hence it is suitable for on-line applications.
The algorithm developed for the proposed indicator has been verified using two test systems (WSCC 9-bus and IEEE 14-bus) test systems.
For both systems, the collapse points have been estimated with sufficient accuracy, as well as detection of the weakest load buses.
The Iraqi power grid (400 kV) has been investigated, various cases are studied considering different contingencies.
The simulated results have been discussed and analyzed for each case.
The simulation has been done with a MATLAB-based power flow program solution by Newton-Raphson method (MATLAB version 7.9).
All the simulated results show the ability of the L indicator to detect the weakest load buses in the electrical networks.
In addition, the short computation time of this indicator and its efficient detection of the weakest load buses in the Iraqi power grid, allow the operators to apply it in on-line voltage stability monitoring based on measurements.
Main Subjects
Topics
American Psychological Association (APA)
Salih, Hammam abd al-Munim. (2011). Voltage stability study of the Iraqi power grid. (Master's theses Theses and Dissertations Master). University of Technology, Iraq
https://search.emarefa.net/detail/BIM-304994
Modern Language Association (MLA)
Salih, Hammam abd al-Munim. Voltage stability study of the Iraqi power grid. (Master's theses Theses and Dissertations Master). University of Technology. (2011).
https://search.emarefa.net/detail/BIM-304994
American Medical Association (AMA)
Salih, Hammam abd al-Munim. (2011). Voltage stability study of the Iraqi power grid. (Master's theses Theses and Dissertations Master). University of Technology, Iraq
https://search.emarefa.net/detail/BIM-304994
Language
English
Data Type
Arab Theses
Record ID
BIM-304994
