Asset management techniques for transformers

In a deregulated/reformed environment, the electric utilities are under constant pressure for reducing operating costs, enhancing the reliability of transmission and distribution equipments, and improving quality of power and services to the customer. Moreover, the risk involved in running the system without proper attention to assets integrity in service is quite high. Additionally, the probability of losing any equipment vital to the transmission and distribution system, such as power and distribution transformers, is increasing especially with the aging of power system's assets. Today the focus of operating the power system is changed and efforts are being directed to explore new approaches/techniques of monitoring, diagnosis, condition evaluation, maintenance, life assessment, and possibility of extending the life of existing assets. In this paper, a comprehensive illustration of the transformer asset management activities is presented. The importance of each activity together with the latest researches done in the area is highlighted.

[1]  P. Verho,et al.  Studies to Utilize Loading Guides and ANN for Oil-Immersed Distribution Transformer Condition Monitoring , 2007, IEEE Transactions on Power Delivery.

[2]  Q. H. Wu,et al.  Equivalent heat circuit based power transformer thermal model , 2002 .

[3]  Gary C. Stevens,et al.  A new approach to condition assessment and lifetime prediction of paper and oil used as transformer insulation , 2001, ICSD'01. Proceedings of the 20001 IEEE 7th International Conference on Solid Dielectrics (Cat. No.01CH37117).

[4]  M. Arshad,et al.  A Novel Fuzzy Logic Technique for Power Transformer Asset Management , 2006, Conference Record of the 2006 IEEE Industry Applications Conference Forty-First IAS Annual Meeting.

[5]  Li Yanming,et al.  The vibration measuring system for monitoring core and winding condition of power transformer , 2001, Proceedings of 2001 International Symposium on Electrical Insulating Materials (ISEIM 2001). 2001 Asian Conference on Electrical Insulating Diagnosis (ACEID 2001). 33rd Symposium on Electrical and Ele.

[6]  B. Pahlavanpour,et al.  Analysis of transformer oil for transformer condition monitoring , 1997 .

[7]  M. K. Domun Condition monitoring of power transformers by oil analysis techniques , 1994 .

[8]  M. Ali,et al.  Measuring and understanding the ageing of kraft insulating paper in power transformers , 1996 .

[9]  R. D. Stebbins,et al.  Furanic compounds in dielectric liquid samples: review and update of diagnostic interpretation and estimation of insulation ageing , 2003, Proceedings of the 7th International Conference on Properties and Applications of Dielectric Materials (Cat. No.03CH37417).

[10]  T.R. Blackburn,et al.  Acoustic detection of partial discharges using non-intrusive optical fibre sensors [current transformers] , 1998, ICSD'98. Proceedings of the 1998 IEEE 6th International Conference on Conduction and Breakdown in Solid Dielectrics (Cat. No.98CH36132).

[11]  M. Redfern,et al.  On load tap-changer conditioned based maintenance , 2001 .

[12]  W.H. Tang,et al.  A Transformer Predictive Maintenance System Based On Agent-Oriented Programming , 2005, 2005 IEEE/PES Transmission & Distribution Conference & Exposition: Asia and Pacific.

[13]  A. Gholami,et al.  Thermal Degradation of Cellulose Paper Insulation in Power Transformers , 2007, 2007 IEEE International Conference on Solid Dielectrics.

[14]  Eklund,et al.  Insulating paper ageing and furfural formation , 2003, Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Technology Conference (Cat. No.03CH37480).

[15]  M. Arshad,et al.  Power transformer insulation response and risk assessment , 2005, 2004 International Conference on Probabilistic Methods Applied to Power Systems.

[16]  D. Birtwhistle,et al.  Condition Assessment of Power Transformer on-Load Tap-Changers Using Wavelet Analysis , 2001, IEEE Power Engineering Review.

[17]  D. Birtwhistle,et al.  Condition Assessment of Power Transformer on-Load Tap-Changers Using Wavelet Analysis and Self-Organizing Map: Field Evaluation , 2002, IEEE Power Engineering Review.

[18]  K. D. Srivastava,et al.  Review of condition assessment of power transformers in service , 2002 .

[19]  G. Theil Parameter evaluation for extended Markov models applied to condition- and reliability-centered maintenance planning strategies , 2006, 2006 International Conference on Probabilistic Methods Applied to Power Systems.

[20]  Q. H. Wu,et al.  Implementation of a power transformer temperature monitoring system , 2002 .

[21]  Tapan Kumar Saha,et al.  Review of modern diagnostic techniques for assessing insulation condition in aged transformers , 2003 .

[22]  Jianguo Zhu,et al.  Application of new condition monitoring technologies in the electricity transmission industry , 2003, Sixth International Conference on Electrical Machines and Systems, 2003. ICEMS 2003..

[23]  E. Gulski,et al.  Monitoring and Diagnostic of Transformer Solid Insulation , 2002, IEEE Power Engineering Review.

[24]  A. Setayeshmehr,et al.  A procedure for diagnosis and condition based maintenance for power transformers , 2004, Conference Record of the 2004 IEEE International Symposium on Electrical Insulation.

[25]  Yongli Zhu,et al.  A transformer condition assessment framework based on data mining , 2005, IEEE Power Engineering Society General Meeting, 2005.

[26]  Hao Zhang,et al.  A novel wavelet de-noising method for on-site PD measurements on HV cables , 2005, Proceedings of 2005 International Symposium on Electrical Insulating Materials, 2005. (ISEIM 2005)..

[27]  W. Young Transformer life management-condition monitoring , 1998 .

[28]  O. Roizman,et al.  Neuro-fuzzy algorithms for power transformers diagnostics , 2000, PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409).

[29]  S.D.J. McArthur,et al.  Multi-Agent Systems for Power Engineering Applications—Part II: Technologies, Standards, and Tools for Building Multi-agent Systems , 2007, IEEE Transactions on Power Systems.

[30]  Ieee Standards Board IEEE guide for the interpretation of gases generated in oil-immersed transformers , 1992 .

[31]  B.P. Singh,et al.  Frequency response analysis approach for condition monitoring of transformer , 2004, The 17th Annual Meeting of the IEEE Lasers and Electro-Optics Society, 2004. LEOS 2004..

[32]  M. Ali,et al.  Degradation of cellulosic insulation in power transformers. Part 2: formation of furan products in insulating oil , 2000 .

[33]  W. J. McNutt,et al.  Insulation thermal life considerations for transformer loading guides , 1992 .

[34]  S.D.J. McArthur,et al.  The design of a multi-agent transformer condition monitoring system , 2004, IEEE Transactions on Power Systems.

[35]  J.R. McDonald,et al.  Incremental knowledge-based partial discharge diagnosis in oil-filled power transformers , 2005, Proceedings of the 13th International Conference on, Intelligent Systems Application to Power Systems.

[36]  Michael S. Bowman,et al.  Applied Economic Analysis for Technologists, Engineers, and Managers , 1998 .

[37]  P. K. Sen,et al.  Overloading and loss-of-life assessment guidelines of oil-cooled transformers , 2001, 2001 Rural Electric Power Conference. Papers Presented at the 45th Annual Conference (Cat. No.01CH37214).

[38]  Wei Li,et al.  Decision on maintenance period for power transformer based on Monte Carlo simulation of reliability , 2003, Proceedings of the 7th International Conference on Properties and Applications of Dielectric Materials (Cat. No.03CH37417).

[39]  I. Hohlein,et al.  Aging of cellulose at transformer service temperatures. Part 1: Influence of type of oil and air on the degree of polymerization of pressboard, dissolved gases, and furanic compounds in oil , 2005, IEEE Electrical Insulation Magazine.

[40]  I.P. Siqueira,et al.  Software Requirements for Reliability-Centered Maintenance Application , 2006, 2006 International Conference on Probabilistic Methods Applied to Power Systems.

[41]  Xinyan Wu,et al.  Study on a spatially selective noise filtration technique for suppressing noises in partial discharge on-line monitoring , 2000, Proceedings of the 6th International Conference on Properties and Applications of Dielectric Materials (Cat. No.00CH36347).

[42]  Y. C. Huang,et al.  Evolving Wavelet Networks for Power Transformer Condition Monitoring , 2002, IEEE Power Engineering Review.

[43]  Hossein Borsi,et al.  Partial discharge localisation on power transformers using neural networks combined with sectional winding transfer functions as knowledge base , 2001, Proceedings of 2001 International Symposium on Electrical Insulating Materials (ISEIM 2001). 2001 Asian Conference on Electrical Insulating Diagnosis (ACEID 2001). 33rd Symposium on Electrical and Ele.

[44]  S. Birlasekaran,et al.  Off/on-line FRA condition monitoring technique for power transformer , 1999 .

[45]  K.T. Muthanna,et al.  Transformer insulation life assessment , 2006, IEEE Transactions on Power Delivery.

[46]  G. C. Stevens,et al.  Review of chemical indicators of degradation of cellulosic electrical paper insulation in oil-filled transformers , 1994 .

[47]  M. E. Beehler,et al.  Reliability centered maintenance for transmission systems , 1996 .

[48]  Ieee Standards Board IEEE guide for loading mineral-oil-immersed power transformers , 1991 .

[49]  Martin D. Judd,et al.  Intelligent condition monitoring and asset management. Partial discharge monitoring for power transformers , 2002 .

[50]  S.D.J. McArthur,et al.  Multi-Agent Systems for Power Engineering Applications—Part I: Concepts, Approaches, and Technical Challenges , 2007, IEEE Transactions on Power Systems.

[51]  L. Haydock,et al.  Swept frequency response tests for condition monitoring of power transformers , 1995 .

[52]  M. de Nigris,et al.  Study of the life consumption of distribution transformers and assessment of end-of-life criteria , 1993 .

[53]  Wenyuan Li,et al.  Power system equipment aging , 2006, IEEE Power and Energy Magazine.