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http://dx.doi.org/10.5762/KAIS.2011.12.6.2739

Dynamic Model Based Ratio Calculation of Equivalent Reactance and Resistance of the Bulk Power Systems  

Kook, Kyung-Soo (Department of Electrical Engineering, Chonbuk National University)
Rho, Dae-Seok (School of IT Engineering, Korea Univ. of Technology and Education)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.12, no.6, 2011 , pp. 2739-2746 More about this Journal
Abstract
This paper proposes the method for more effectively calculating X/R which is the ratio of equivalent reactance(X) and resistance(R) of the bulk power system and analyses the characteristic of X/R values by applying the proposed method to the real bulk power systems. X/R is used to determine the rating of the relay in the bulk power systems and its value has been accepted to be big enough to ignore the equivalent resistance of the bulk power systems. However, X/R is calculated as a big number when only the upper transformer and transmission line are considered. The correct approach to calculating X/R needs to consider all the parameters including generators, transformers, lines and loads. This paper calculates X/R of the bulk power systems using dynamic models which have been used to analyse the power system stability. The effectiveness of the proposed method is verified by applying it to the test system and X/R values of the real bulk power systems are analyzed. In addition, the dependence of X/R on the closeness of its calculating locations to the generator is verified by using the marginal loss factor which has been used in the electricity market.
Keywords
X/R; Power Systems; Reactance; Resistance; Dynamic Model; Voltage Flicker; Relay;
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  • Reference
1 R. Grunbaum, "SVC Light: A Powerful Means for Dynamic Voltage and Power Quality Control in Industry and Distribution", Power Electronics and Variable Speed Drives, pp. 404-409, 18-19 September 2000, Eighth International Conference Publication No.475 @ IEE 2000.
2 Kuno Janson and Jaan Jarvik, "AC-DC Converter With Parametric Reactive Power Compensation," IEEE Trans on Industrial Electronics, Vol. 46, No.3, pp. 554-562, June 1999.   DOI
3 Li Zhang, Mark Baldwin, Yilu Liu Michael R. Ingram, Dale T. Bradshaw Steve Eckroad Mariesa L. Crow, "A Solution for EAF Induced Problems in Bulk Power Systems by FACTS/ESS", Power Engineering Society General Meeting, IEEE. 12-16 June 2005.
4 Z. Yang, C. Shen, L. Zhang, M. L. Crow and S. Atcitty, "Integration of a StatCom and Battery Energy Storage," IEEE Trans Power System, Vol. 16, pp. 254-260, May 2001.   DOI
5 Paulo. F. Ribeiro, Aysen Arsoy and Yilu Liu, "Transmission Power Quality Benefits Realized by a SMES-FACTS Controller," Harmonics and Quality of Power, 2000 Proceedings, pp. 307-312, Ninth International Conference, October 2000.
6 D. Stade, H. Schau, St. Prinz, "Influence of the Current Control Loops of DC Arc Furnaces on Voltage Fluctuations and Harmonics in the HV Power Supply System", pp. 821-825.
7 Kyung Soo Kook, T.K.Oh, H.Y.Kim, "Analysis of the impact of the marginal loss factor change caused by the reference node change on the electric power trading in Korean Wholesale Electricity Market", Proceedings of the KIEE PES autumn annual conference, South Korea, November, 2002.
8 Application Guide for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis, ANSI/IEEE Standard C37.010-1999
9 Short-Circuit Current Calculation in Three-Phase a.c Systems, IEC 60909-1988, International Standard.
10 Ketut Dartawan, Member, IEEE, and Conrad St. Pierre, "Proposed Methods to Determine Fault Point X=R Ratio for Breaker Evaluation", IEEE Transactions on Industry Applications, Vol. 40, No. 4, July/August 2004