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Developing Algorithm and Program for Power Flow Analysis in Power System with VSC-HVDC

تطوير خوارزمية و برنامج حاسوبي لتحليل جريان الاستطاعة في نظم القدرة الكهربائية الحاوية على نظام VSC-HVDC

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 Publication date 2014
and research's language is العربية
 Created by Shamra Editor




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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.


Artificial intelligence review:
Research summary
تناقش الورقة البحثية تطوير خوارزمية وبرنامج حاسوبي لتحليل جريان الاستطاعة في نظم القدرة الكهربائية التي تحتوي على نظام VSC-HVDC. يهدف البحث إلى تقديم نموذج رياضي وخوارزمية لتحليل جريان الاستطاعة في الحالة المستقرة لنظام يحتوي على VSC-HVDC باستخدام طريقة نيوتن-رافسون. تم تطوير برنامج حاسوبي بلغة ++C لتطبيق الخوارزمية، وتم اختباره على عدة أنظمة قياسية، بما في ذلك نظام IEEE 14-bus. أظهرت النتائج أن النظام VSC-HVDC يمكنه تحسين استقرار النظام الكهربائي وتحقيق استثمار أفضل لخطوط النقل القائمة، بالإضافة إلى تقليل الضياعات في النظام. كما تم اختبار تأثير النظام VSC-HVDC على جريان الاستطاعة وتوترات قضبان التجميع في النظام، وأظهرت النتائج فعالية النظام في تحسين أداء الشبكة الكهربائية.
Critical review
تعتبر الدراسة خطوة مهمة نحو تحسين استقرار وكفاءة نظم القدرة الكهربائية باستخدام تقنيات حديثة مثل VSC-HVDC. ومع ذلك، يمكن توجيه بعض الملاحظات النقدية لتحسين العمل المستقبلي. أولاً، الدراسة تركز بشكل كبير على الجانب النظري والتقني دون تقديم تطبيقات عملية واسعة النطاق أو دراسة حالات واقعية متنوعة. ثانياً، لم يتم التطرق بشكل كافٍ إلى التحديات الاقتصادية والبيئية المتعلقة بتطبيق النظام VSC-HVDC في الشبكات الكهربائية الحالية. أخيراً، يمكن تحسين الدراسة بإضافة مقارنة مع تقنيات أخرى مشابهة لتحليل الفروقات والميزات بشكل أكثر تفصيلاً.
Questions related to the research
  1. ما هو الهدف الرئيسي من البحث؟

    الهدف الرئيسي هو تطوير نموذج رياضي وخوارزمية لتحليل جريان الاستطاعة في الحالة المستقرة لنظام قدرة كهربائية يحتوي على نظام VSC-HVDC، وتطبيق ذلك من خلال برنامج حاسوبي.

  2. ما هي الطريقة المستخدمة لتحليل جريان الاستطاعة في النظام؟

    تم استخدام طريقة نيوتن-رافسون لتحليل جريان الاستطاعة في النظام الكهربائي الذي يحتوي على نظام VSC-HVDC.

  3. ما هي النتائج الرئيسية التي توصلت إليها الدراسة؟

    أظهرت النتائج أن نظام VSC-HVDC يمكنه تحسين استقرار النظام الكهربائي، تحقيق استثمار أفضل لخطوط النقل القائمة، وتقليل الضياعات في النظام.

  4. ما هي التحديات التي لم تتناولها الدراسة بشكل كافٍ؟

    لم تتناول الدراسة بشكل كافٍ التحديات الاقتصادية والبيئية المتعلقة بتطبيق النظام VSC-HVDC، كما لم تقدم تطبيقات عملية واسعة النطاق أو دراسة حالات واقعية متنوعة.


References used
S. Cole, D. Van Hertem, L. Meeus, R. Belmans, "Technical developments for the future transmission grid", IEEE, International Conference on Future Power Systems 2005
D. Van Hertem, J. Verboomen, R. Belmans, W. L. Kling, "Power flow controlling devices: An overview of their working principles and their application range", IEEE, International Conference on Future Power Systems 2005
G. Asplund, K. Eriksson, K. Svensson,"DCtransmission based on Voltage Source Converters," Cigré, Colloquium in South Africa 1997
Mohan N., Undeland T. M., Robbins W. P., "Power electronics-Converters, Applications, and Design", 2003, John Wiley & Sons Inc
.M. M. de oliveira."Power Electronics for Mitigation of Voltage Sags and Improved Control of ac Power Systems", Ph.D. thesis, Royal Institute of Technology, ISSN-1100- 1607, TRITA-EES-0003, Stockholm, Sweden, 2000
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