POWER TRANSFORMER HEALTH INDEX ESTIMATION USING EVIDENTIAL REASONING

Srdjan Milosavljevic, Aleksandar Janjic

DOI Number
10.2298/FUEE2004571M
First page
571
Last page
581

Abstract


Market-oriented power distribution system requires a well-planned budget with scheduled preventive and corrective maintenance during a replacement of units that are in an unsatisfactory condition. In recent years, the concept of the transformer health index as an integral part of resource management was adopted for the condition assessment and ranking of ETs. However, because of the lack of regular measurement and inspections, the confidence in health index value is greatly reduced.

The paper proposes a novel methodology for the ET condition assessment and the lifetime increase through the establishment of priorities for control and maintenance. The solution is based on the upgraded health index, where the confidence to the measurement results is calculated using Evidential reasoning algorithm based on Dempster – Shafer theory. A novel, two – level hierarchical model of ET health index is proposed, with real weighting factors values. This way, the methodology for ET ranking includes the value of available information to describe ET current state. The proposed methodology is tested on real data of an installed ET and compared with the traditional health index calculation.


Keywords

Dempster Shaffer, Evidential reasoning, Health index, Condition evaluation

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References


D Stevanović, A Janjić, ”Influence of circuit breaker replacement on power station reliability”, Facta Universitatis, Series: Electronics and Energetics, vol. 32, no. 3, pp. 331–344, 2019.

A. N. Jahromi, R. Piercy, S. Cress, J. R. R. Service, W. Fan, “An Approach to Power Transformer Asset Management Using Health Index”, IEEE Electrical Insulation Magazine, vol. 25, no. 2, pp. 20–34, 2009.

B. Gorgan, P.V. Notingher, V.L. Badicu, G. Tanasescu, “Calculation of power transformers health indexes”, Annals of the University of Craiova, Electrical Engineering Series, 2010 no. 34, pp. 13–18,

M. Vermeer, J. M. Wetzer, P.C.J.M. van der Wielen, E. de Haan, E. de Meulemeester, Asset-management decision-support modeling, using a health and risk model. 2015 IEEE Eindhoven PowerTech 1–6.

A. Azmi, J. Jasni, N. Azis, M.Z.A .Ab. Kadir, “Evolution of transformer health index in the form of mathematical equation”, Renewable and Sustainable Energy Reviews, vol. 76, pp. 687–700, 2017.

G.A. Shafer, “Mathematical theory of evidence”. Princeton University Press, Princeton, 1976.

Z.J. Zhang, J.B. Yang, D.L. Xu, “A hierarchical analysis model for multi-objective decision making. Analysis, Design and Evaluation of Man–Machine System”, Oxford, UK, pp. 13–18, 1990.

J.B. Yang, M.G. Singh, “An evidential reasoning approach for multiple attribute decision making with uncertainty”, IEEE Transactions on Systems, Man, and Cybernetics, vol. 24, no. 1, pp. 1–18, 1994.

J.B. Yang, D.L. Xu, ”On the evidential reasoning algorithm for multi-attribute decision analysis under uncertainty”, IEEE Transactions on Systems, Man and Cybernetics Part A Systems and Humans, vol. 32, no. 3, pp. 289–304, 2002.

W. H. Tang, K. Spurgeon, Q. H. Wu, Z. J. Richardson, “An Evidential Reasoning Approach to Transformer Condition Assessments”, IEEE Transactions on Power Delivery, vol. 19, no. 4, 2004.

A. Shintemirov, W.H. Tang, Q.H. Wu, “Transformer winding condition assessment using frequency response analysis and evidential reasoning”, IET Electr. Power Appl., vol. 4, no. 3, pp. 198–212, 2010.

R. Liao, H. Zheng, S. Grzybowski, L. Yang, Y. Zhang, and Y. Liao, “An Integrated Decision-Making Model for Condition Assessment of Power Transformers Using Fuzzy Approach and Evidential Reasoning”, IEEE Transactions on Power Delivery, vol. 26, no. 2, 2011.

E. Duarte, D. Falla, J. Gavin, M. Lawrence, T. McGrail, D. Miller, P. Prout, B. Rogan, “A Practical Approach to Condition and Risk Based Power Transformer Asset Replacement”, In Proceedings of the IEEE International Symposium on Electrical Insulation IEEE, 2010.

F. Scatiggio, A. Fraioli, V. Iuliani, M. Pompili, “Health Index: the TERNA’s Practical Approach for Transformers Fleet Management”, CIGRE, Paris, 2014.

N. Dominelli, “Equipment Health Rating of Power Transformers” In Proceedings of the IEEE International Symposium on Electrical Insulation Indianapolis, USA, September, 2004, pp. 163–168.

Life Management Techiques for Power Transformers”, Cigre Working Group 12.18, Brochure 227, 2003

J. Ponocko et all. “Health index as the part of asset management in the area of power transformers” (in Serbian), CIGRE conference, Zlatibor, 2015.


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