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تحليل الاضطراب لتوربينة الرياح المربوطة مع منظومة القدرة == Disturbance Analysis of A Wind Turbine Connected With Power System

Author name: احمد نجم عبد الامير
Supervisor name: كنعان علي جلال
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: University of Technology - Electrical Engineering Department - Electrical Engineering Branch
Language: English
University location: Baghdad
First pages:
Abstract: نظرا لزيادة الطلب على الطاقة في السنوات الاخيرة نتيجة للتوسع السكاني والصناعي ولتقليل التلوث الناتج من الوقود التقليدي والحفاظ على البيئة مما دعت الحاجة الى استخدام مصادر بديلة للطاقة, والتي يجب ان تمتاز بعدة ميزات اهمها انها صديقة للبيئة وغير قابلة للنفا | According to increasing the demand for energy in recent years as a result of the expansion of the population and to reduce pollution from conventional fuels, the need arises to find alternative sources of energy which must be characterized by several features, most important of which is friendly to the environment and sustainable. In this work, the effect of different types of disturbances on the performance of fixed speed of wind turbine generator type Squirrel Cage Induction Generator (SCIG) connected to the power system has been investigated, because it has features which make the best choice in some cases, despite the less efficiency compared with other types of generators. Also, this work aims to study and analysis the effect of (STATCOM) on the wind turbine generators because of its advantages in improving voltage stability of the grid and improving the quality of the productive power. The proposed work is performed using MATLAB/Simulink. The intelligent systems have been used to obtain the best performance in terms of extracting more power from wind energy as well as increase the stability of system in situations of disturbances and the results obtained have been compared with conventional control systems.Three types of controllers are proposed in this work; the first controller is the Proportional - Integral (PI) based on classical trial and error method, the second controller is PI - controller based on Particle Swarm Optimization (PSO) technique for optimal tuning (gain) to improve the performance of the system. The results obtained proved that the PI - controller based on Particle Swarm Optimization (PSO) technique is better than based on trial and error method. The third controller is (Nonlinear Auto regressive - Moving Average) NARMA - L2 based on (PSO). Finally, the results of the proposed controllers show that NARMA - L2 controller is more effective on the stabilization and improves the performance of the system compared with PI - PSO controller

تقييم اداء المسافية بوجود اجهزة FACTS == Distance Protection Performance Evaluation In Presence of Facts Devices

Author name: امير عقيل محمد
Supervisor name: قيس متي الياس
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: University of Technology - Electrical Engineering Department - Electrical Engineering Branch
Language: English
University location: Baghdad
First pages:
Abstract: With limited enhancement or expansion of the transmission infrastructure, the contemporary power systems are operating under more stressed conditions. It becomes important to fully utilize the existing transmission system to supply load demand as much as possible, thus eliminating or reducing the need for new transmission investment. Flexible AC Transmission System (FACTS) technology provides a method to fully utilize the existing transmission lines as well as new and upgraded lines. However, the implementation of FACTS devices in the transmission system has introduced new power system dynamics that must be addressed in the area of power system protection, such as rapid changes in line impedance, line current and voltage. This thesis reports the results of comprehensive study carried out to explore the impact of mainly two of the FACTS devices, Static Synchronous Compensator 'STATCOM' and Unified Power Flow Controller 'UPFC', on the distance protection relaying system in order to identify important issues that protection engineers need to consider, that is during the stages of design and operation of the protection system. Simulation studies are carried out using MATLAB/SIMULINK. First, the distance relay has been modeled and validated with FACTS device models using test systems from literature. Then the distance relay performance is analyzed and evaluated for various fault and loading conditions in the presence of FACTS devices. A comprehensive study and results for one of the Iraqi 400kV transmission lines (KDS4 - NSRP transmission line) are presented and useful recommendations can be presented to the General Directorate of electrical Power Transmission for Middle Euphrates region / Iraqi Ministry of Electricity. II Abstract Generally, the results show that the apparent impedance seen by the distance relay would be different from that of the system without FACTS devices. Due to this, the distance relay may malfunction, resulting in undependable operation of the power system protection during faults. Furthermore, the results show clearly the dependency of the distance relay operation on many design and operational factors. These include the FACTS device type and its use purpose, the FACTS device connection point or location, the fault type and fault point location along the line, the power flow,...etc.

تحسين استقرارية منظومة الشبكة العراقية (kV 400) باستعمال افضل جهاز من اجهزة ال FACTS == Stability Improvement of The (400kV) Iraqi Grid Using The Best FACTS Device

Author name: شيماء شكري عبد الحليم
Supervisor name: رشيد حميد الربيعي
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: University of Technology - Electrical Engineering Department - Electrical Engineering Branch
Language: English
University location: Baghdad
First pages:
Abstract: يعتبر نظام القدره الكهربائيه من الانظمه الضخمه والمعقده لاحتوائها على عدد كبير من محطات التوليد وخطوط النقل واجهزة السيطرة لذلك فانه يخضع الى تغيرات مفاجئه في مستويات الحمل، حيث اصبح من الصعب جدا الحفاظ على نظام مستقرمع التغيرات التي يشهدها النظام, لذلك | Electrical power system has become large and complicated so it is susceptible to sudden changes in load levels. Stability is an important concept which determines the stable operation of power system.The modern trend is to employ Flexible Alternating Current Transmission System (FACTS) devices in the system for effective utilization of transmission resources. The FACTS devices contribute to power flow improvement besides they extend their services in transient stability improvement as well, study and analyze the stability of system through rotor angle and voltage. The objective of this work is to improve the transient stability of the Iraqi National Super Grid System (INSGS) by using best FACTS device in different optimal locations under fault conditions. Two test systems are studied, the first system is IEEE 9 - bus test system, and the second system is the Iraqi (400 kV) electrical network 24 - bus bars, three phase to ground fault, temporary fault and permanent fault are tested. The load flow program was implemented using Newton - Raphson method and the numerical solutions of non - linear differential equations are solved using Trapezoidal method. The programs that are used in this work are implemented using MATLAB 7.12.0(R2011a) package based on Power System Analysis Toolbox (PSAT version 2.1.6)software.copyright © 2002 - 2010 by Federico Milano as Graphical User Interface. A comparison has been made between five types of FACTS (UPFC, SSSC, TCSC, SVC, STATCOM) at optimal locations of the Iraqi grid and 9 - bus test system to get optimal FACTS devices by (voltage stability and rotor angle stability). The results obtained show that Unified Power Flow Controller (UPFC) is an optimal device for improvement the stability by damping the voltage and rotor angle oscillations.

تحديد منظومة كفوءة للقدرة الفوتوضوئية المستقلة بناءا على الاجواء العراقية == Investigation Into Efficient Stand - Alone Photovoltaic System Based On Iraq Climate

Author name: انسام صبحي جبار
Supervisor name: محمد مؤنس عز الدين
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: University of Technology - Electrical Engineering Department - Electrical Engineering Branch
Language: English
University location: Baghdad
First pages:
Abstract: الطاقة الشمسية هي احدى الطاقات المتجددة التي تمتاز بانها امنة وصديقه للبيئة. عالميا هناك توجه كبير لهذة الانواع من الطاقات للحد من مشاكل التلوث والاحتباس الحراري. شهدت السنوات الاخيرة انخفاض في اسعار منظومات الطاقة الشمسية وكذلك ارتفاع كفائتها مما ساعد وب | Solar energy is safe as well as clean. It is one type of renewable energy , the energy does not cause pollutions and is not harmful to the environment. It is gaining importance now with the increases in global warming and pollution causing the adoption of renewable energy sources as alternative energy sources. For these reasons, the technological advance seeks to reduce the cost of renewable energy and increase efficiency to expand its reach.This work investigates the best strategy for design the solar energy system of stand - alone type. The stand - alone system consists of the PV array, maximum power point tracking, DC - DC converters, charge controller, battery, load and inverter. Standard specifications are used to ensure the successful operation of any system designed according to this method.The proposed method in this work includes calculation by using Microsoft Excel and simulation of long term periods especially during the autonomy days operation by using Matlab/Simulink. Many cases are studied, a suitable PV power system is introduced for each case. The results of the design of the case study are quite in agreement with published results.The objective of this work is to design solar energy systems for hypothetical loads according to Iraqi climate, this aim is achieved because the designed system passed many tests, especially for the worst case of operation. The investigation shows that the system is capable of exhibiting a reliable operation for any weather condition.

تحسين الاستقرارية باستخدام التوليد الموزع في شبكة النجف الاشرف الكهربائية == Stability Enhancement Using Distributed Generation In Al - Najaf Al - Ashraf Electrical Network

Author name: زيد طارق حسن
Supervisor name: رشيد حميد الربيعي
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: University of Technology - Electrical Engineering Department - Electrical Engineering Branch
Language: English
University location: Baghdad
First pages:
Abstract: ان عمل وتركيب نظام التوزيع يتغير مع اضافة وحدات التوليد الموزع (DG )، حيث انها تؤثر على خسائر القدرة، الاستقرارية، الفولطية، جودة الطاقة وكميات اخرى، لذلك اختيار الموقع الامثل والحجم وعدد وحدات التوليد الموزع (DG ) ضروري لتجنب التاثيرات السلبية على نظا | The operation and structure of distribution system are changing with the integration of distributed generation (DG), where the DG may have effect on power losses, stability, voltage profile, power quality and other quantities, therefore the optimization of location , size and number of DG are necessary to avoid the negative impacts on electric power system.In this work, the Particle Swarm Optimization (PSO) technique is used to find the optimal number and locations of DG in order to minimize the active power losses. The thermal limit of transmission lines and transformers was studied in cases , with DG and without DG, to detect the lines or transformers which exceed the limit in order to processed it. The voltage stability of distribution network has been investigated, using L index (which aims to detect the vulnerable load buses of an electrical power system). Also the rotor angle transient stability of DG units has been calculated to specify the critical clearing time (CCT) of each circuit breaker in distribution network when one of transmission lines is exposed to three phase to ground fault. The developed algorithm has been verified using two test systems IEEE 33 - bus distribution system and the WSCC 9 - bus test system, furthermore applied to a part of Iraqi distribution network (Al - Najaf Al - Ashraf distribution network). Two softwares are used in this work , the first is Matlab R2013a for implementation of the PSO and voltage stability algorithms while the second software is Power World Simulator 15 for implementation of the thermal limit of transmission lines and transformers, and rotor angle transient stability of DG units.DG contributed significantly to reduce the power losses in Al - Najaf Al - Ashraf distribution network, where there is a reduction by about 96% in active losses. Also DG processed the overload of large substations and the stability of buses in the network.

اكتشاف العطل الارضي المنفرد واخماده ذاتيا باستخدام السيطرة على ملف بترسون في شبكة التوزيع == Detection of Earth Fault And Self - Extinguishing By Controlling Petersen - Coil In Distribution Grid

Author name: فريال ابراهيم الظفيري
Supervisor name: عبد الغني عبد الرزاق عبد الطائي | قاسم كرم عبد الله
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: University of Babylon - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Babylon
First pages:
Abstract: ان اكثر الاعطال شيوعا والتي تتعرض لها الشبكة الكهربائية في العالم هو Single Line to Earth حيث ان عطل احدى الاطوار مع الارضي في الشبكات الكهربائية, يسبب هذا قوسا كهربائيا اضافه الى جهد كبير , اكبر من جهد الطورين مع بعضهما مما يزيد خطورة الفصل والعزل في ال | All over the world, the most common faults in the distribution network is the single line to ground fault. A single phase fault with the earthing in the distribution networks causes electrical arc as well as high voltage than the two phases together which increase the danger of separation and isolation in networks. Consequently, this case can be controlled through Peterson Coil which turns off or reduces the electrical arc that makes the network safer. This work has using technique to detect the earth fault in the single - phase by distinguishing between the higher and the lower values of the currents. Also, this technique is used to detect the capacity of earthing network lines and the possibility to adapt the capacitor for inductance in order to detect the electrical arc during faults and to detect the earth leakage.Moreover, we have used many methods to control Peterson coils such as using PID Controller , Fuzzy Logic Controller, Hybrid control PID and Fuzzy System and Adaptive Neural Fuzzy Inference system, to determine the earth fault current at values equal to the current in the two sound phases. To getting best results for the fault current through conducting lab experiences by using DC Servo motor and Arduino. And the fault current is converted from the rated current, thus thousands of tons of copper cost are save. They were used to carry this high voltage. Finally, the first practical part (Simulink) was implemented through Mat lab (R2011a) and (R2013a) , On the other hand, the second practical part was in the lab, where servo motors Where used, variable and non - variable inductance , the drive to isolate the control loop from the power, PID and PWM, have also used the Arduino system to program the overdrive.

السيطرة المتينة على تردد الحمل لمنظومة القدرة متعددة المناطق == Robust Load - Frequency Control Of A Multi - Area Power System

Author name: فراس احمد مجيد الدرزي
Supervisor name: علي حسين احمد
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Doctorate
University: University of Al Mosul - College Of Engineering
Language: English
University location: Mosul
First pages:

طرق متقدمة لتشخيص اعطاب المحركات الحثية == Advanced Methods For Induction Motors Fault Diagnosis

Author name: ياسر محمد يونس امين
Supervisor name: باسل محمد سعيد
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Doctorate
University: University of Al Mosul - College Of Engineering
Language: English
University location: Mosul
First pages:

السيطرة العصبية المضببة لمعمل الدرفلة الباردة == Fuzzy - Neural Control Of Cold - Rolling Mill

Author name: وليد اسحاق حميد
Supervisor name: Khearia A. Mohammad
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: University Of Basrah - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Basrah
First pages:

دراسة جديدة لتصميم مسيطر مثالي للسيطرة على منظمات التوليد الرياح- شمسية بنوعيها المنفصلة والمربوطة بالشبكة == A New Study On Optimization And Control Of Solar - Wind Power Sources In Both Autonomous And Grid - Linked Applications

Author name: هبة عبد الكريم خميس حسن
Supervisor name: Abbas H. Abbas | Abdul Baki K. Ali
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: University Of Basrah - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Basrah
First pages:

الشبكات العصبية الاصطناعية في حماية الغلق الذاتي لخطوط الضغط العالي == Artificial Neural Network In Auto Reclosing Protection Of H.V. Lines

Author name: ناظم شيت رسول
Supervisor name: مامون فاضل الكبابجي
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Doctorate
University: University of Al Mosul - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Mosul
First pages:

تقويم استقرارية الفولتية باستخدام التقنيات الذكية مع التطبيق على شبكة العراق الشمالية == Voltage Stability Assessment Based On Intelligent Techniques Applied On Iraqi Northern Region Grid (INRG)

Author name: صباح منصور عسكر محمد الجبوري
Supervisor name: باسل محمد سعيد سيد قدو
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Doctorate
University: University of Al Mosul - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Mosul
First pages:

التحليل والتعويض لمنظومات السيطرة اللاخطية بالاعتماد على تقنيات الشبكات العصبية == Analysis And Compensation Of Nonlinear Control Systems Based On Neural Network Techniques

Author name: بكر ذنون يونس
Supervisor name: باسل محمد سعيد
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Doctorate
University: University of Al Mosul - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Mosul
First pages:

طرائق حديثة لتحسين جودة القدرة الكهربائية في تجهيز نظم النقل بالفولتية العالية المباشرة == New Methods For Power Quality Improvements In HVDC Transmission System

Author name: راكان خليل عنتر الداوودي
Supervisor name: باسل محمد سعيد | رافد احمد خليل
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Doctorate
University: University of Al Mosul - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Mosul
First pages:

التحكم بسرعة محرك التيار المستمر عديم الفرش بناء على المتحكم PIDوالشبكات العصبية المويجية == Speed Control Of Brushless DC Motor Based On PID And Wavelet Neural Networks

Author name: امير لطيف صالح
Supervisor name: Adel A. Obed | Ramzy S. Ali
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: University Of Basrah - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Basrah
First pages:

السيطرة الذكية لمجموعة من المحركات الحثية ثلاثية الاطوار == Intelligent Control Of Multi Three - Phase Induction Motors

Author name: ازهر كامل عجيل
Supervisor name: Rabee' H. Thejel | Jawad R. Mahmood
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: University Of Basrah - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Basrah
First pages:

تمثيل ونمذجة محرك حثي ثلاثي الطور ذو الدوار القفصي السنجابي عميق القضبان باستخدام طريقة العناصر المحددة == Modeling And Simulation Of A Three - Phase Induction Motor With Deep - Bar Cage Rotor Type Using FEM

Author name: احمد جدعان علي الجبوري
Supervisor name: باسل محمد سعيد
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Doctorate
University: University of Al Mosul - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Mosul
First pages:

السمات الاقتصادية لتطبيق المكثفات على شبكات التوزيع == Economical Aspects Of Capacitors Application To Distribution Networks

Author name: وائل نبيل عبد الخالق
Supervisor name: حسين جعفر المشاط
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: University of Technology - Electrical Engineering Department - Electrical Engineering Branch
Language: English
University location: Baghdad
First pages:

تحسين الاستقرارية لمنظومة القدرة الكهربائية من خلال تنسيق عمل منظومات السيطرة الخاصة بمولدات الشبكة == Enhancement Of Power System Stability By Coordinated Systems Control Of Generators

Author name: محمد جاسم محمد عبيس ال عيسى
Supervisor name: رشيد حميد الربيعي
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: University of Technology - Electrical Engineering Department - Electrical Engineering Branch
Language: English
University location: Baghdad
First pages:

PMW Technique For Voltage Source Inverter Of Tree Phase AC Induction Motor

Author name: سيف ثامر فاضل
Supervisor name: Majeed Al-Khatat
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Doctorate
University: University of Technology - Electrical Engineering Department - Electrical Engineering Branch
Language: English
University location: Baghdad
First pages:

تطبيق المسيطر الضبابي على المحرك الخطوي == Fuzzy PID Control Applied To A Stepping Motor Drive

Author name: عقيل صخي جابر
Supervisor name: مجيد الخطاط
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: University of Technology - Electrical Engineering Department - Electrical Engineering Branch
Language: English
University location: Baghdad
First pages:

دراسة ادارة الاحمال الكهربائية لمؤسسة الكهرباء == Load Management Study For Electric Utility

Author name: نوال بتو كانو
Supervisor name: ضاري يوسف محمود
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: University of Technology - Electrical Engineering Department - Electrical Engineering Branch
Language: English
University location: Baghdad
First pages:

اعادة ترتيب الشبكة وسيطرة القوة التفاعلية لتخفيض الخسارة باستعمال الخوارزمية الجينية == Network Reconfiguration And Control Of Reactive Power For Loss Reduction Using A Genetic Algorithm

Author name: محمد رضا سعيد الهنداوي
Supervisor name: رشيد حميد الربيعي
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: University of Technology - Electrical Engineering Department - Electrical Engineering Branch
Language: English
University location: Baghdad
First pages:

تمثيل ونمذجة الاستقرارية العابرة لمنظومة القدرة للشبكة الوطنية العراقية 400KV == Modeling And Simulation Of Transient Stability For Iraqi National Power System (400KV)

Author name: لؤي غالي ابراهيم المفرجي
Supervisor name: رشيد حميد الربيعي
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: University of Technology - Electrical Engineering Department - Electrical Engineering Branch
Language: English
University location: Baghdad
First pages:

القدرة القصوى المنقولة والمحددة باستقرارية الفولتية في منظومات النقل المعوضة == Maximum Power Transfer Limited By Voltage Stability For Compensated Transmission Systems

Author name: محمد هشام عبد الحر الخفاجي
Supervisor name: رشيد حميد الربيعي
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: University of Technology - Electrical Engineering Department - Electrical Engineering Branch
Language: English
University location: Baghdad
First pages:
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