NDLI: Effects of unsymmetrical power transmission system on the voltage balance and power flow capacity of the lines

Content Provider	IEEE Xplore Digital Library
Author	Davoudi, M.G. Bashian, A. Ebadi, J.
Copyright Year	2012
Description	Author affiliation: Department of Electrical Engineering, Ferdowsi University of Mashhad, Iran (Davoudi, M.G.; Bashian, A.; Ebadi, J.)
Abstract	Transmission lines transposition and balance loading in all phases are the initial criteria for analyzing a power system with a symmetrical model. Untransposed transmission lines have different effects on the power system like voltage unbalance, reduced power-transmission capacity of the lines and increased losses in the lines. In this paper, the effects of unsymmetrical transmission lines on the performance quality of the power system will be studied. First, the effects of asymmetry of the power system on the balance of grid voltage will be discussed as an important power quality parameter. Then, its effects on decrease of power-transmission capacity of the lines will be analyzed. Line coupling and problems such as divergence of calculations would face the use of advanced existing software for analyzing unsymmetrical networks with some difficulties. In this paper, the amount of voltage unbalance in transmission and $132^{kV}$ network of a case study power system located in Khorasan province in Iran will be calculated. After calculating unused capacity of transmission lines in this system, the financial consequences of this problem will be discussed at the end.
Starting Page	860
Ending Page	863
File Size	1165274
Page Count	4
File Format	PDF
ISBN	9781457718304
e-ISBN	9781457718298
DOI	10.1109/EEEIC.2012.6221496
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-05-18
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power transmission lines Induction motors DIgSILENT Assymetric Model Voltage unbalance Mathematical model Power transformers Equations Transmission Capacity Load flow
Content Type	Text
Resource Type	Article

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