Thermal modelling for dynamic transformer rating in low carbon distribution network operation

Part of book or chapter of book English OPEN
Yang, J. ; Strickland, D. (2014)
  • Publisher: IET

Dynamic asset rating is one of a number of techniques that could be used to facilitate low carbon electricity network operation. This paper focusses on distribution level transformer dynamic rating under this context. The models available for use with dynamic asset rating are discussed and compared using measured load and weather conditions from a trial Network area within Milton Keynes. The paper then uses the most appropriate model to investigate, through simulation, the potential gains in dynamic rating compared to static rating under two transformer cooling methods to understand the potential gain to the Network Operator.
  • References (13)
    13 references, page 1 of 2

    [1] Ofgem. Low Carbon Networks Fund,

    [2] Western Power Distribution. FALCON,

    [3] M. F. Lachman, P. J. Griffin, W. Walter, A. Wilson. “Realtime dynamic loading and thermal diagnostic of power transformers,”, IEEE Transactions on Power Delivery, volume 18, no. 1, pp. 142-148, (2003).

    [3] B. D. Lahoti, D. E. Flowers. “Evaluation of transformer loading above nameplate rating”, IEEE Transactions on Power Apparatus and Systems, volume PAS-100, no. 4, pp. 1989- 1998, (1981).

    [4] J. A. Jardini, J. L. P. Brittes, L. C. Magrini, M. A. Bini, J. Yasuoka. “Power transformer temperature evaluation for overloading conditions”, IEEE Transactions on Power Delivery, volume 20, no. 1, pp. 179-184, (2005).

    [5] D. Susa, M. Lehtonen, H. Nordman. “Dynamic thermal modelling of power transformers”, IEEE Transactions on Power Delivery, volume 20, no. 1, pp. 197-204, (2005).

    [6] J. McCarthy. “Analysis of transformer ratings in a wind farm environment”, Master degree thesis, Dublin Institute of Technology, (2010).

    [7] International Electrotechnical Commission (IEC). “Power transformers - Part 7: Loading guide for oil-immersed power transformers,” IEC 60076-7, pp. 1-110, (2005).

    [8] T. S. Jalal, N. Rashid, B. van Vliet. “Implementation of dynamic transformer rating in a distribution network,” IEEE International Conference on Power System Technology (POWERCON), Auckland, New Zealand, 30 Oct. - 2 Nov. (2012).

    [9] Working Group 09 of Study Committee 12. “Direct measurement of the hot-spot temperature of transformers,” CIGRE document, Ref. 096, pp. 17-21, (1995).

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