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نمذجة نظم القدرة الكهربائية باستخدام مفهوم البرمجة غرضية التوجه (OOP)
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مصطفى الحزوري( باحث )
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إن تطبيقات البرمجة غرضية التوجـه Programming Oriented Object أو اختصـاراً OOP باستخدام لغات البرمجة Pascal و ++C في نظم القدرة الكهربائية فجر آفاقاً جديدة في معالجة مسائل تخطيط و تصميم و تشغيل هذه النظم. في هذا البحث سنشرح طريقة تمثيل لعناصر نظام القـدرة (مولـدات، محـولات، خطـوط، قواطع، مكثفات، ملفات...). و أسلوب نمذجة للنظام بكامله في ذاكرة الحاسوب باستخدام مفهوم البرمجة غرضية التوجه و لغة توربو باسكال. و بناءً على الطريقة المقترحة في النمذجة سنكتب برنامج بلغة تربو باسكال لحل مسألة جريان الحمولة في الشبكات الكهربائية يبين كفاءة الطريقة المقترحة و أهميتها.
Application Of Object Oriented Programing OOP concept and the C++. Pascal programming language to power system simulation has been explored. An efficient platform for power system simulation applications has been proposed. By emulationg a physical power lap, a generic power network container has been build, a module. One load flow applications a ac load flow have been discussed. It is found that the OOP based Pascal load flow programs are as efficient as their non – OOP counterparts.
References used
(Istavan Vago. Graph Theory. Application To The Calculation Of Electrical Networks. Budapest (1985
(J. P. Barret, P. Bornard And B. Meyer. Power System Simulation. Chapman & Hall , London(1997
(J. Arrillaga, C. P. Arnold And B. J. Harker. Computer Modelling Of Electrical Power System. John Wiley & Sons. New Delhi (1983
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Operating the electrical power systems at normal conditions is our goal always. This
is what represents the ideal state of electrical power system work. Hence, the electrical
power system work in case of insufficient electrical power requires avoid
ing since it leads
to big losses in national economy.
These losses could be huge when we talk about connection borders between systems
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conditions could be noticeably decreased at a reasonable limit of electrical power request.
When we find out the optimal solution of electrical power systems operation and the
communication lines between them while considering the losses of consumers
disconnecting that guarantee the stability of loads. Finally, it is so at full use of maneuver
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This paper studies the basic approach to solve these issues which imply the reliability
definitions.
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uses object orientation to hide implementation details from the designer of the environment which results in making the construction of such environments easier and more productive as well as their modification later if needed. The proposed library is based on the Java programming language and on Java 3D technology which makes it
portable and usable on any platform that has an implementation of these two technologies.
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
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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.
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