Preferred Language
Articles
/
joe-583
Power System Stabilizer PSS4B Model for Iraqi National Grid using PSS/E Software
...Show More Authors

To damp the low-frequency oscillations which occurred due to the disturbances in the electrical power system, the generators are equipped with Power System Stabilizer (PSS) that provide supplementary feedback stabilizing signals. The low-frequency oscillations in power system are classified as local mode oscillations, intra-area mode oscillation, and interarea mode oscillations. Double input multiband Power system stabilizers (PSSs) were used to damp out low-frequency oscillations in power system. Among dual-input PSSs, PSS4B offers superior transient performance. Power system simulator for engineering (PSS/E) software was adopted to test and evaluate the dynamic performance of PSS4B model on Iraqi national grid. The results showed that after installing the PSS in a specific plant the oscillation of rotor angle, bus frequency, speed, power flow is better than without PSS during the disturbances that occurred during the simulations.  All the PSS/E simulation and tests were done in the National dispatch center (NDC) laboratory, Ministry of Electricity.  

 

Crossref
View Publication Preview PDF
Quick Preview PDF
Publication Date
Thu Dec 01 2011
Journal Name
Iraqi Journal Of Physics
Electronic diagnostics system for the analysis of laser beam profile
...Show More Authors

In this work the analysis of laser beam profile system ,using a two dimensional CCD (Charge Coupled Device) arrays, is established. The system is capable of producing video graphics that give a two dimensional image of laser beam. The video graphics system creates color distribution that represent the intensity distribution of the laser beam or the energy profile of the beam. The software used is capable of analyzing and displaying the profile in four different methods that is , color code intensity contouring , intensity shareholding, intensity cross section along two dimension x-y, and three dimensional plot of the beam intensity given in the same display.

View Publication Preview PDF
Publication Date
Sun Jan 01 2017
Ultra low power and highly linearized LNA for V-band RF applications in 180 nm CMOS technology
...Show More Authors

Scopus (3)
Crossref (2)
Scopus Clarivate Crossref
Publication Date
Wed Aug 01 2018
Journal Name
Journal Of Economics And Administrative Sciences
Analysis of the Current Financial Crisis : Causes and Solutions (Iraqi crisis a model , based on the public budget for the fiscal year 2016)
...Show More Authors

The research aims to analysis of the current financial crisis in Iraq through knowing its causes and then propose some solutions that help in remedy the crisis and that on the level of expenditures and revenues, and has been relying on the Federal general budget law of the Republic of Iraq for the fiscal year 2016 to obtain the necessary data in respect of the current expenditures and revenues which necessary to achieve the objective of the research , and through the research results has been reached to a set of conclusions which the most important of them that causes of the current financial crisis in Iraq , mainly belonging to increased expenditures and especially the current ones and the lack of revenues , especially non-oil o

... Show More
View Publication Preview PDF
Crossref
Publication Date
Wed Jun 28 2023
Journal Name
Al–bahith Al–a'alami
Public Attitudes Towards National Issues in Interactive Television Programs
...Show More Authors

This research aims to investigate the extent to which the Iraqi audience relies on interactive television programs as a source of information regarding national issues and their resulting impacts. It seeks to identify the types and nature of attitudes developed among the public towards national issues through these programs and determine the prominent topics and issues highlighted to the audience. The researcher employed a field survey as the primary research method, employing a questionnaire for data collection along with scientific observation and the Likert three-point scale to measure attitudes. The study was guided by the media dependency theory. A sample of 520 questionnaires was distributed to residents in

... Show More
View Publication Preview PDF
Crossref
Publication Date
Wed Feb 20 2019
Journal Name
Political Sciences Journal
National security and human security concepts in the study
...Show More Authors

Security reflects a permanent and complex movement that complies with international and societal needs and developments in all its dimensions, interactions and levels. To constitute a universal demand for all States, communities and individuals. The question of security is one of the most important motivations and motivations that govern the behavior, and even the objectives of those societies and States. These groups or individuals have always sought to avoid fear and harm, and to provide stability, safety and security. In the light of this, security studies have been among the important fields of study in the field of international and strategic relations. The field witnessed many theoretical efforts, from the traditional perspective,

... Show More
View Publication Preview PDF
Crossref
Publication Date
Sat Feb 27 2021
Journal Name
Iraqi Journal Of Science
Analysis of the Petroleum System of Dima Oil Field by Using PetroMoD 1D
...Show More Authors

The study of petroleum systems by using the PetroMoD 1D software is one of the most prominent ways to reduce risks in the exploration of oil and gas by ensuring the existence of hydrocarbons before drilling.

     The petroleum system model was designed for Dima-1 well by inserting several parameters into the software, which included the stratigraphic succession of the formations penetrating the well, the depths of the upper parts of these formations, and the thickness of each formation. In addition, other related parameters were investigated, such as lithology, geological age, periods of sedimentation, periods of erosion or non-deposition, nature of units (source or reservoir rocks), total organic carbon (TOC)

... Show More
View Publication Preview PDF
Scopus (1)
Scopus Crossref
Publication Date
Tue May 11 2021
Journal Name
Journal Of The Faculty Of Medicine Baghdad
A Reviewing the Top Health Systems with Comparison to Iraqi Health System: Commercial Health Systems Review
...Show More Authors

Background: The assessments of performance in any health system is a

challenging goal.

Objectives: This article reviews the top healthcare systems then compares

them to Iraqi health system.

Patients and methods: The top 12 commercial Health Systems in 2020

ranked by a survey of more than 20,000 international citizens from 73

countries on 65 diverse metrics. These metrics vary from simple to critical

health system performance criteria.

Results: Up to January 2020, the review shows that Canada has t

... Show More
View Publication Preview PDF
Crossref (3)
Crossref
Publication Date
Thu Oct 20 2022
Journal Name
Ibn Al-haitham Journal For Pure And Applied Sciences
Theoretical Investigations of High Power Yb3+: YAG Thin-Disk Laser
...Show More Authors

     The present study includes a theoretical treatment to derive the general equations of pumping threshold power ( ), laser output power (Pout), and laser device efficiency (ƞ) of the element-doped thin-disk laser (Yb3+) with a quasi-three-level pumping scheme in the continuous wave mode at a temperature of (299K°). In this study, the host crystals (YAG) were selected as typical examples of this laser design in a Gaussian transverse mode. The numerical solution of these equations was made using Matlab software by selecting the basic parameters from the recently published scientific articles for the laser design of these crystal hosts. According to this simulation, this article studied the effect o

... Show More
View Publication Preview PDF
Crossref (1)
Crossref
Publication Date
Fri Jul 21 2023
Journal Name
Journal Of Engineering
Development of an Integrated Construction Management System for Building Estimation
...Show More Authors

Project management are still depending on manual exchange of information based on paper documents. Where design drawings drafting by computer-aided design (CAD), but the data needed by project management software can not be extracted directly from CAD, and must be manually entered by the user. The process of calculation and collection of information from drawings and enter in the project management software needs effort and time with the possibility of errors in the transfer and enter of information. This research presents an integrated computer system for building projects where the extraction and import quantities, through the interpretation of AutoCAD drawing with MS Access database of unit costs and productivities for the pricing and

... Show More
View Publication Preview PDF
Crossref
Publication Date
Tue Jan 11 2022
Journal Name
Iraqi Journal Of Science
HARLIN model for prediction of solar radiation for Baghdad city, Iraq
...Show More Authors

In this study a combination of two basics known methods used to daily prediction of solar insolation in Baghdad city, Iraq, for the first time, the harmonic and the classical linear regression analyses, thus it is called HARLIN model. The resulted prediction data compared with basics data for Baghdad city for two years (2010-2011), where the model showed a great success application in the accurate results, compared with the linear famous and well known model which is used the classical linear Angstrom equations with various formulations in many previous studies.

View Publication Preview PDF