يقسم هذا البحث إلى قسمين نظري و عملي.
يوضح القسم النظري أهمية الربط الكهربائي للمحافظة على استقرار التردد, حيث
ذكرت أهم الفوائد الاقتصادية و الفنية التي حققها مشروع الربط الثماني في مجال الاستقرار
للشبكة الكهربائية بشكل عام و استقرار التردد بشكل خاص و المعوقات و الإجراءات
المتبعة لتذليلها.
و يعرض القس العملي عدة تجارب عمى الشبكة السورية لسنة 2011 باستخدام برنامج
PSS/E, و الاعتماد على هذا البرنامج بعد مطابقة نتائجه مع النتائج الواقعية من خلال ,
تطبيق عدة حوادث تعتيم حصلت في الشبكة السورية, حيث تم التركيز في تجارب هذا
البحث على أهمية الاحتياطي الدوار و الربط الكهربائي و فصل الحمولات الكهربائية
باستخدام الحمايات الترددية للمحافظة على استقرار التردد في الشبكة الكهربائية السورية,
و تجنب هبوطه إلى قيم غير مرغوب بها.
This research is divided into theoretical and practical sections.
The theoretical section clarifies the importance of electrical
interconnection in frequency stability, which reports the most
important technical and economic benefits achieved for the
electrical network stability in general and frequency stability by
the (EIJLLPST) project.
The practical section will introducea number of simulation on
the Syrian network for the year 2011 using the PSS/E, and rely
on this program after comparing the results with the results of
real situations, through the application of several incidents of
blackout occurred in the Syrian network (and archived of
frequency when they occur)
Where the experienced of this research was focus on the
importance of the spinning reserve, electrical interconnection
and the separation of electrical loads using underfrequency rely
To maintain the stability of electrical grid frequency in Syria
,and to avoid falling into undesirable values of frequency.
References used
KUNDUR.P,2002-PowerSystem Stability and Control,USA, p1176
BIALEK.J,2008-Power System Dynamics-Second Edition, USA,p521
This study aims to analyze the effect of the wind farms on frequency stability of the electrical power network, and the description of the performance of Syrian Electrical Power System with integration of
wind farms in several regions in Syria (Al-Q
In this research the dynamic impact of the interconnection on the rotor
angle Stability for Synchronous Generators in the Syrian Network were
analyzed through the dynamic simulation of the power system and building
of equations is linear and then
The out-of-stability state of synchronous generator which
connected to high voltage network due to the transient
situations which lead us to disconnect the generator causes
finincial and technical problems. Therfore the purpose of this
research i
Due to the large and rapid increase in the demand for electricity and the gradual decline of
non-renewable sources of energy (fossil fuels, etc.), the performance of electrical systems
has to be developed so the use of distributed generation and it
Medical emergencies could occur during the practice of dentistry. A dentist
must be prepared to recognize and manage of any potential emergency situation. The purposes of the
study were to determine the occurrence of medical emergencies in Damascus dental clinics, and to assess
the way patients' medical history is taken.