Optimal Assessment of Faulted Area around an Industrial Customer for Critical Sag Magnitudes

Authors: Marios N. Moschakis

Abstract:

This paper deals with the assessment of faulted area around an industrial customer connected to a particular electric grid that will cause a certain sag magnitude on this customer. The faulted (critical or exposed) area’s length is calculated by adding all line lengths in the neighborhood of the critical node (customer). The applied method is the so-called Method of Critical Distances. By using advanced short-circuit analysis, the Critical Area can be accurately calculated for radial and meshed power networks due to all symmetrical and asymmetrical faults. For the demonstration of the effectiveness of the proposed methodology, a study case is used.

Keywords: Critical area, fault-induced voltage sags, industrial customers, power quality.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1093702

References:

[1] M. Moschakis, S. Loutridis, V. Dafopoulos, A. Anastasiadis, T. Tomtsi, E. Karapidakis, A. Tsikalakis, "Prediction of Voltage Sags Applying the Method of Critical Distances to Meshed Power Networks”, in Proc. IEEE PMAPS (Probabilistic Methods Applied to Power Systems) Conference, Istanbul, Turkey, June 2012, pp. 570-575.
[2] Μ. Bollen, "Understanding Power Quality Problems: Voltage Sags and Interruptions”, IEEE Press Series on Power Engineering, P.M. Anderson Series Editor, 2000.
[3] M. N. Moschakis, I. G. Andritsos, V. V. Dafopoulos, J. M. Prousalidis, E. S. Karapidakis, "An Evaluation of Sag Detection Techniques for Fast Solid-State Electronic Transferring to Alternate Electrical Energy Sources”, International Journal of Electrical Science and Engineering, International Science Index 80, Vol:7, No:8, 2013.
[4] L. E. Conrad, "Proposed Chapter 9 for Predicting Voltage Sags (Dips) in revision to IEEE Std 493, the Gold Book", IEEE Trans. Ind. Applicat., vol. 30, no. 3, pp. 805-821, May/June 1994.
[5] M. Moschakis, E. Leonidaki, N. Hatziargyriou, "Considerations for the Application of Thyristor Controlled Series Capacitors to Radial Power Distribution Circuits”, IEEE PowerTech Conference Proceedings, Bologna, Italy, 2003.
[6] M. N. Moschakis, V. V. Dafopoulos, I. G. Andritsos, E. S. Karapidakis, J. M. Prousalidis, "The Effect of Transformer’s Vector Group on Retained Voltage Magnitude and Sag Frequency at Industrial Sites due to Faults”, International Journal of Electrical Science and Engineering, International Science Index 79, Vol:7, No:7, 2013.
[7] J. Grainger, W. Stevenson, Power System Analysis, McGraw-Hill, 1994.
[8] M. N. Moschakis, N. D. Hatziargyriou, "Analytical Calculation and Stochastic Assessment of Voltage Sags”, IEEE Transactions οn Power Delivery, vol. 21, no. 3, pp. 1727-1734, July 2006.
[9] M. Ν. Moschakis, A. Kladas, N. Hatziargyriou, "A Voltage Source Converter Model for Exchanging Active and Reactive Power with a Distribution Network”, ELSEVIER -Journal of Materials Processing Technology, vol. 161, pp. 128-135, 2005.
[10] G. Olguin, M. Bollen, "Stochastic Assessment of Unbalanced Voltage Dips in Large Transmission Systems”, IEEE PowerTech Conference, June 23-26, Bologna, Italy, 2003.
[11] M. N. Moschakis, E. L. Karfopoulos , E. I. Zountouridou , S. A. Papathanassiou , "On Adaptation of Electric Vehicle and Microgrid Issues to EMC-Power Quality Standards", Electrical and Electronic Engineering Journal, Vol. 2, No. 5, pp. 249-257, 2012.
[12] M. N. Moschakis, E. L. Karfopoulos, E. I. Zountouridou, and S. A. Papathanassiou, "Adapting EV-Microgrid Concepts to European Grid Standards Related to Power Quality”, 16th IEEE International Conf. on Intelligent System Applications to Power Systems, Crete, Greece, 2011.
[13] PSCAD/EMTDC Power Systems Simulation Software, Manitoba HVDC Research Center., Canada, 1997.
[14] European Standard EN 50160, "Voltage characteristics of electricity supplied by public electricity distribution networks”, November 1994.
[15] ΙΕΕΕ Std 1159, "Recommended Practice for Monitoring Electric Power Quality”, 1995.