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Transmission System Containing VSCHVDC Analysis and Simulation

تمثيل شبكات النقل الكهربائية الحاوية على أنظمة VSC-HVDC

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 Publication date 2018
and research's language is العربية
 Created by Mhd Mouffak AlKhateeb




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The use of DC and especially VSC-HVDC systems are considered as urgent and important in electrical networks to improve their efficiency because they have great benefits not only in connecting different frequency networks and connecting the renewable energy to the network, but also control power flow in a way that reduce the losses and achieve the optimal flow electrical networks especially in networks that contain more than one energy supplier and thus can achieve economic benefits as well as the scheduling of importing energy from another that may improve network stability. Types of HVDC system and a comparison between them are achieved in this research after that simulation IEEE with VSCHVDC, and integrated computer program was proposed this program can create and store three-dimension matrix so the working area can be scanned so minimum loss working point can be detected.


Artificial intelligence review:
Research summary
يستعرض هذا البحث أهمية وضرورة استخدام أنظمة النقل بالتيار المستمر عالي التوتر VSC-HVDC في الشبكات الكهربائية لتحسين كفاءتها. يوضح البحث كيف يمكن لهذه الأنظمة أن تربط بين الشبكات ذات الترددات المختلفة وتدمج الطاقة المتجددة، بالإضافة إلى التحكم في جريان الاستطاعة لتقليل الضياعات وتحقيق الجريان الأمثل للاستطاعة. يتناول البحث أنواع أنظمة HVDC ويقارن بينها، ثم يقدم نمذجة لشبكة معيارية مع إضافة نظام VSC-HVDC. كما يقترح برنامج حاسوبي متكامل لتخزين مصفوفة ثلاثية الأبعاد تمثل الاستطاعة الفعلية والاستطاعة الردية والضياعات في الشبكة، مما يمكن من تحديد نقطة العمل التي تعطي أصغر ضياع للشبكة. يعتمد البحث على النمذجة باستخدام برنامج DigSilent ولغة البرمجة DPL، ويقدم نتائج مقارنة بين التمثيل البرمجي والمرجعيات المتاحة، مع التركيز على تحسين استقرار الشبكات وتقليل الضياعات.
Critical review
دراسة نقدية: يعد هذا البحث خطوة مهمة في مجال تحسين كفاءة الشبكات الكهربائية باستخدام أنظمة VSC-HVDC. ومع ذلك، يمكن توجيه بعض النقد البناء للبحث. أولاً، كان من الممكن توسيع نطاق الدراسة لتشمل شبكات أكبر وأكثر تعقيدًا من الشبكة المعيارية المستخدمة. ثانيًا، لم يتم التطرق بشكل كافٍ إلى التحديات العملية والتكاليف المرتبطة بتطبيق هذه الأنظمة في الشبكات الحقيقية. ثالثًا، كان من الممكن تقديم تحليل أعمق للتأثيرات الاقتصادية والفنية لاستخدام أنظمة VSC-HVDC مقارنة بالأنظمة التقليدية. على الرغم من هذه النقاط، فإن البحث يقدم إسهامًا قيمًا في مجال تحسين كفاءة الشبكات الكهربائية وتقليل الضياعات.
Questions related to the research
  1. ما هي الفوائد الرئيسية لاستخدام أنظمة VSC-HVDC في الشبكات الكهربائية؟

    الفوائد الرئيسية تشمل ربط الشبكات ذات الترددات المختلفة، دمج الطاقة المتجددة، التحكم في جريان الاستطاعة لتقليل الضياعات، وتحقيق الجريان الأمثل للاستطاعة في الشبكات.

  2. ما هي الأدوات البرمجية المستخدمة في هذا البحث لنمذجة الشبكة ودراسة الضياعات؟

    تم استخدام برنامج DigSilent ولغة البرمجة DPL لنمذجة الشبكة ودراسة الضياعات.

  3. كيف يمكن لنظام VSC-HVDC تحسين استقرار الشبكات الكهربائية؟

    يمكن لنظام VSC-HVDC تحسين استقرار الشبكات الكهربائية من خلال التحكم المستقل في الاستطاعة الفعلية والردية، مما يتيح مرونة أكبر في تشغيل الشبكات وتقليل الاضطرابات.

  4. ما هي النقطة التشغيلية المثلى التي تم تحديدها في البحث لتقليل الضياعات في الشبكة؟

    النقطة التشغيلية المثلى التي تم تحديدها هي (37MW, 99MVar)، حيث تقل الضياعات من 4.91 إلى 4.31، مما يمثل تحسنًا يزيد عن 12%.


References used
Bahrman, Michael, Abdel-Aty Edris, and Rich Haley. "Asynchronous back-to-back HVDC link with voltage source converters." In Minnesota Power Systems Conference. 1999.
Sood, Vijay K. HVDC and FACTS controllers: applications of static converters in power systems. Springer Science & Business Media, 2006
Cole, Stijn. "Steady-state and dynamic modelling of VSC HVDC systems for power system simulation." Katholieke Universiteit Leuven, Leuven-Heverlee, PhD. Thesis (2010).
Sellick, R. L., and Markus Åkerberg. "Comparison of HVDC Light (VSC) and HVDC Classic (LCC) site aspects, for a 500MW 400kV HVDC transmission scheme." (2012): 23-23.
Guo, Chunyi, Yi Zhang, Aniruddha M. Gole, and Chengyong Zhao. "Analysis of dual-infeed HVDC with LCC–HVDC and VSC–HVDC." IEEE Transactions on Power Delivery 27, no. 3 (2012): 1529-1537.
Flourentzou, Nikolas, Vassilios G. Agelidis, and Georgios D. Demetriades. "VSC-based HVDC power transmission systems: An overview." IEEE Transactions on power electronics 24, no. 3 (2009): 592-602.
Kalitjuka, Tatjana. "Control of voltage source converters for power system applications." Master's thesis, Institutt for elkraftteknikk, 2011.
Zhang, Lidong. "Modeling and control of VSC-HVDC links connected to weak AC systems." PhD diss., KTH, 2010.
Anderson, Paul M., and Aziz A. Fouad. Power system control and stability. John Wiley & Sons, 2008
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