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Performance of newton-raphson method for load flow analysis in ill-conditioned systems

Performance of newton-raphson method for load flow analysis in ill-conditioned systems / Rabiatul Adawiyah Mohamad Zukri
Kajian aliran kuasa digunakan secara meluas dan penting untuk analisis keadaan mantap pada sistem kuasa. Kekukuhan aliran kuasa adalah penting untuk membantu para jurutera dalam konfigurasi rangkaian yang sukar. Pada hakikatnya, peningkatan permintaan puncak dan pelbagai faktor lain yang telah meningkatkan kebimbangan sistem kuasa kerana ini mungkin menyebabkan sistem jatuh ke sistem yang tidak sihat. Kajian ini membentangkan kajian kaedah Newton-Raphson untuk analisis aliran beban dalam sistem yang tidak sihat. Analisis dilakukan pada IEEE 30-Bus System melalui pengaturcaraan MATLAB. Tumpuan utama kajian ini adalah untuk menganalisis kes-kes yang mempunyai nisbah R/X yang tinggi dan keadaan pemuatan dalam sistem penghantaran dengan melaksanakan kaedah Newton-Raphson pada platform MATLAB. Parameter yang terlibat dalam kajian ini adalah bilangan lelaran yang diperlukan bagi sistem untuk menumpu dan masa pengiraan untuk menjalankan analisis aliran beban di MATLAB. Nilai R/X dan faktor pemuatan dinaikkan secara beransur-ansur untuk melihat kesan pada prestasi Newton-Raphson dalam analisis aliran beban. Penyampaian grafik dimasukkan untuk membandingkan bagaimana kenaikan nisbah R/X dalam baris individu dan sekumpulan baris akan mempengaruhi nombor lelaran sistem untuk menumpu. Sementara itu, untuk faktor pemuatan, bilangan lelaran dan masa pengiraan turut dianalisa. _______________________________________________________________________________________________________ Power flow studies are widely used and essential for steady state analysis on power systems. Robustness of power flow is vital to assist engineers on difficult network configurations. In reality, the increase in peak demand and many more factor has increased the concern of the power system as this might cause the system to fall into ill-conditioned system. This paper presents a review of Newton-Raphson method for load flow analysis in ill-conditioned systems. The analysis was carried out on IEEE 30-Bus System via MATLAB programming. The main focus of this paper is to analyse the ill-conditioned cases of high R/X ratio and loading conditions in a transmission system by implementing the conventional Newton-Raphson method on the MATLAB platform. The parameters that are concerned in this research are the iteration number required for the system to converge and the computation time to run the load flow analysis in MATLAB. The value of R/X ratio and loading factor is increased gradually to observe the effect on the performance of Newton-Raphson in load flow analysis. A graphical presentation is included to compare how the increment of R/X ratio in individual lines and a group of lines would affect the iteration numbers of the system to converge. Meanwhile, for loading factor, the iteration number and computation time also being analysed.
Contributor(s):
Rabiatul Adawiyah Mohamad Zukri - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875007651
Language:
English
Subject Keywords:
Power flow; Robustness; difficult
First presented to the public:
6/1/2018
Original Publication Date:
8/7/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Electrical & Electronic Engineering
Citation:
Extents:
Number of Pages - 69
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-08-07 10:27:38.897
Date Last Updated
2019-01-07 11:24:32.9118
Submitter:
Mohd Jasnizam Mohd Salleh

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