Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
CONVERGENCE OF THE FAST DECOUPLED LOAD FLOW FOR SYSTEMS WITH HEAVY REACTIVE POWER COMPENSATION
Date
1992-11-01
Author
Sevaioğlu, Osman
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
149
views
0
downloads
Cite This
This paper presents an alternative formulation for the shunt elements in the fast decoupled load flow equations to improve the convergence performance of the algorithm for systems operating under heavy reactive power compensation conditions. The formulation proposes a sign change for the diagonal terms corresponding to the contribution of the capacitive shunt elements while calculating the load flow matrices. A spectral analysis has been carried out to examine the convergence performance of the algorithm with the proposed formulation by calculating the spectral norm of the iteration matrix in the load flow equations. It is shown that this index exhibits a strong dependence on the convergence of the algorithm; it is reduced when the rate of convergence is improved. It is shown in this paper that this norm is significantly reduced when the shunt elements are represented by the proposed formulation. The proposed formulation has been exhaustively tested on four IEEE test systems, and it is shown that the algorithm proposed is consistently superior to the other formulations given in the literature. The proposed formulations may therefore be used for solving systems with heavy capacitive power compensation, such as systems having load flow equivalent circuits or EHV cables.
Subject Keywords
Electrical and Electronic Engineering
,
Energy Engineering and Power Technology
,
Load flow
,
Fast decoupled load flow
,
Reactive power compensation
,
Spectral norm
URI
https://hdl.handle.net/11511/58028
Journal
ELECTRIC POWER SYSTEMS RESEARCH
DOI
https://doi.org/10.1016/0378-7796(92)90097-k
Collections
Department of Electrical and Electronics Engineering, Article
Suggestions
OpenMETU
Core
Spectral correction-based method for interharmonics analysis of power signals with fundamental frequency deviation
Salor, Oezguel (Elsevier BV, 2009-07-01)
In this paper, a spectral correction-based algorithm for interharmonic computation is proposed for especially highly fluctuating fundamental frequency cases in the power system. It has been observed and reported that fluctuating demands of some loads such as arc furnaces, or disturbances and subsequent system transients make the fundamental frequency of the power system deviate and this causes non-existing interharmonics to appear in the spectrum due to grid-effect when a standard window length is used for ...
Performance optimization of induction motors during voltage-controlled soft starting
Zenginobuz, G; Cadirci, I; Ermiş, Muammer; Barlak, C (Institute of Electrical and Electronics Engineers (IEEE), 2004-06-01)
This paper deals with the performance optimization of medium/high-power induction motors during soft starting by eliminating the supply frequency torque pulsations, and by keeping the line current constant at the preset value. Starting torque pulsations are eliminated by triggering back-to-back-connected thyristors at proper points on the first supply voltage cycle. Line current during starting can be kept constant at any preset value by a simple strategy composed of successive cosinusoidal and constant fun...
A current source converter based statcom for reactive power compensation at low voltage
Biçer, Nazan; Ermiş, Muammer; Department of Electrical and Electronics Engineering (2010)
This research work is devoted to the analysis, design and development of the Current-Source Converter (CSC) based distribution-type Static Synchronous Compensator (D-STATCOM) for low-voltage applications in reactive-power control in order to achieve i) faster transient response in reactive-power control, ii) lower current harmonic distortion, iii) lower power losses and iv) minimum storage elements in comparison with conventional solutions. The developed CSC-D-STATCOM includes a low-pass input filter and a ...
Extension of forward-backward method with DFT-based acceleration algorithm for the efficient analysis of large periodic arrays with arbitrary boundaries
Aydın Çivi, Hatice Özlem; Chou, HT (Wiley, 2005-11-05)
An extension of the discrete Fourier transform (DFT)-based forward-backward algorithm is developed using the virtual-element approach to provide a fast and accurate analysis of electromagnetic radiation/scattering front electrically large, planar, periodic, finite (phased) arrays with arbitrary boundaries. Both the computational complexity and storage requirements of this approach are O(N-tot) (N-tot is the total number of unknowns). The numerical results for both printed and freestanding dipole array's wit...
Optimization of Power Conversion Efficiency in Threshold Self-Compensated UHF Rectifiers With Charge Conservation Principle
Gharehbaghi, Kaveh; KOÇER, FATİH; Külah, Haluk (2017-09-01)
This paper presents a compact model for threshold self-compensated rectifiers that can be used to optimize circuit parameters early in the design phase instead of time-consuming transient simulations. A design procedure is presented for finding the optimum aspect ratio of transistors used in the converter and number of rectifying stages to achieve the maximum power conversion efficiency. In the presented analysis, the relation between the power conversion efficiency and the load current over the variation o...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
O. Sevaioğlu, “CONVERGENCE OF THE FAST DECOUPLED LOAD FLOW FOR SYSTEMS WITH HEAVY REACTIVE POWER COMPENSATION,”
ELECTRIC POWER SYSTEMS RESEARCH
, pp. 91–99, 1992, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/58028.