Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userنظام برامجي 2 SECURITY لتحليل الأحداث المحتملة و تصميم الإجراءات الوقائية لضمان تشغيل آمن لنظم القدرة الكهربائية
1237
0 37
0
(
0
)
Added by
Tishreen University ورقة بحثية
Publication date
2000
fields
Electrical Power Engineering
and research's language is
العربية
Created by
Shamra Editor
Ask ChatGPT about the research
في هذا البحث تم تطوير هام للنظام البرامجي 1 Security لتحليل أمان نظام القدرة الكهربائية الذي كان قد قُبل للنشر في مجلة جامعة دمشق. النظام البرامجي 2 Security الجديد لا يقوم فقط بتحليل الأحداث المحتملة التي يمكن أن يتعرض لها نظام القدرة الكهربائية من حيث جريان الاستطاعة الفعلية، و يكشف الخطوط المحمَّلة تحميلاً زائداً، بل يستخدم أيضاً تقانة البرمجة الخطية لتعديل استراتيجية التوليد و تقنين بعض الأحمال كإجراء تصحيح وقائي لإزالة التحميل الزائد عن الخطوط المرهقة. لقد تم تصميم النظام البرامجي بلغة تربو باسكال و وفق شاشات حوار مع المستخدم، و تم التثبت من صحته بتطبيقه على شبكات عملية اختبارية، كما استخدم لتحليل الأمان لجزء من الشبكة السورية لتوتر 230 ك ف. و تبين من خلال النتائج أن البرنامج فعال و مرن و قادر على تنفيذ وظائفه بدقة مقبولة و سرعة قياسية على الرغم من استخدام النماذج الخطية في بنائه.
No English abstract
References used
Wood A. ,Wollenberg B.: Power Generation, Operation and Control. John Wiley, 1984, 1996
Borland.: Turbo Pascal for Windows , Programming Guide 1991
rate research
Read More
The paper begins with an introduction that describes the concept and
importance of power system security. The mathematical model is built
depending on both the linear load flow technique and the sensitivity
factors for line and generation outages.
The algorithm has been designed
so that a power system of arbitrary bus number and voltage levels can be
studied. This algorithm has been programmed in Borland Pascal in
interactive mode, and the developed program has been tested on several
test systems. The Program has been used for security assessment of a part
of the Syrian 230 kV network. The obtained results have shown the
validity and effectiveness of the program in spite of using linear models.
It is worth saying that the developed program is the first one for security
assessment in Syria so far.
Keeping the voltage within the required limits is one of the key issues of operating a power system. since the voltage in electrical power system is affected significantly by changes of loads and
equivalent circuit of the power system, there is a ne
ed to regulate the voltage with high control ability. Because of the growing use of FACTS in General and STATCOM among them in power systems to improve voltage stability, and because of the need for software that is not always available, the aim of research is to develop a mathematical model, algorithm and software for load flow analysis at the steady state of power system includes static synchronous compensator STATCOM.
The Jacobian matrix in the Newton –Raphson algorithm, which is the relationship between voltage and power mismatches, is extended with the STATCOM variables to adjust the voltage and control of the reactive power witch is injected or absorbed at the point of common coupling, with high controlability.
A Complete software has been developed that includes comprehensive control facilities and exhibits very strong convergence characteristics. A Sophisticated algorithm has been verified and the effectiveness of the program is tested by its application to a number of standard power systems
including the IEEE 5-bus system, and Syrian transmission network 400 kV.
with different frequency make Voltage Source Converter - HVDC link (VSC-HVDC links) an
attractive technology for most power transport in meshed grids. Advantages are the high
controllability of active and reactive power at the converter’s terminals
and the ability to increase the
stability of the surrounding AC system. VSC-HVDC can provide active and reactive control to achieve
maximum power transfer, system stability and improve power quality and reliability.
This research aims to develop a mathematical model and an algorithm for the analysis of power flow in
a steady state of power system containing VSC-HVDC.The Jacobian matrix inNewton-
Raphsonalgorithm, which is the relationship between voltage and power mismatches, is extended with
the VSC HVDC variablesto control active and reactive powers and voltage magnitude in any
combination. A Newton-Raphson load flow program has been developed which includes
comprehensive control facilities and exhibits very strong convergence characteristics. Two scenarios
have been studied, back-to-back VSC-HVDC link and full VSC-HVDC link connecting two buses in
AC networks. The algorithm and the program have been verified through a number of simulation
examples carried out on IEEE 14-bus System.
The development of Information Systems (I.S) is of great importance for
researchers and industrial users. Different methods for (I.S) design have been
proposed until now. Some of them put emphasis on the statical aspect, and
others on the dynamica
l aspect. A third category of methods has recently
appeared, which try to take into account both aspects, and therefore provide
unified view of data and treatments. Also there exist approaches that put the
stress on rigour in the specification and validation process.
This paper presents a tool (CASE) which constitute a conceptual help to
Information Systems design: that tries, on one hand, to handle the statical and
dynamical, aspects while providing at the same time, the user with products
that are readable and easy to understand and on the other hand, to validate the
specification obtained in a rigorous way. In fact, it is an attempt to satisfy both
the designer and the user.
تعمل التوافقيات على إنقاص مردود التجهيزات الكهربائية و تشويه حسن أدائها ، كما تعمل
على رفع درجة حرارة الأجهزة و المعدات المستخدمة في نظم الطاقة الكهربائية ( محركات،
مولدات ، محولات ، كابلات ..... ) . كما أنها تشوه دقة القياس في دارات الحواكم و دوائ
ر
توليد النبضات و دارات القياس للمرور بالصفر . هذا كما يلاحظ وجود بعض المشاكل في
المحركات الميكروية للحواسب .
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
