Do you want to publish a course? Click here

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

1599   0   20   0 ( 0 )
 Publication date 2014
and research's language is العربية
 Created by Shamra Editor




Ask ChatGPT about the research

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
rate research

Read More

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.
Unified Power Flow Controller (UPFC) plays a vital role in improving the power system performance, both the static and dynamic, and enhanced the system loading capability by rerouting the power flow in the network. This paper presents control and performance of UPFC intendedfor installation on the transmission line to control power flow and improve voltage profile.
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.
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 renewa ble 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.
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 as per overload frame, because of lack of electrical power request. The impact of these 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 (available cases) spare power properties when applying the instant correction of regime. This paper studies the basic approach to solve these issues which imply the reliability definitions.
comments
Fetching comments Fetching comments
Sign in to be able to follow your search criteria
mircosoft-partner

هل ترغب بارسال اشعارات عن اخر التحديثات في شمرا-اكاديميا