Optimum Scheme for Insulation System in HV Generator Based on Electromagnetic Analysis
Electrical insulations are one of the basic parts of electrical machinery in any sizes and characteristics. Focusing on insulating, studies on the operation of industrial-electrical machinery came to the fact that the most important part of a machine is the Stator. This fact reveals the requirement for inspection of the electrical machine insulation along with the electromagnetic tensions. Therefore with respect to insulation system improvement of stator, the HV generator can be optimized. Dielectric parameters such as insulation thickness, spacing, material types, geometry of winding and slot are major design consideration. A very powerful method available to analyze electromagnetic performance is Finite Element Method (FEM) which is used in this paper. The analysis of various stator coil and slot configurations are used to design the better dielectric system to reduce electrical stresses in order to increase the power of generator in the same volume of core. These processes of optimization have been done according the proposed algorithm. In this algorithm the technical constraints have been considered. This paper describes the process used to perform classical design and improvement analysis of stator slot’s insulation with respect to objective function and constraints.
Keywords:insulation, FEM, machine, magnetic, thermal
F. T. Emery, D. Pavlik, “Electrostatic field analysis of high voltage generator stator insulation systems”, IEEE Annual Report Conference on Electrical Insulation and Dielectric Phenomena, Vol. 2, pp. 510–513, 2000
M. Arshad, A. Khaliq, S. M. Islam, “Turbo generator stator winding condition assessment”, POWERCON International Conference on Power System Technology, Vol. 2, pp. 1399-1403, 2004
S. B. Lee, J. Yang, K. Younsi, R. M. Bharadwaj, “An On-Line groundwall and phase to phase insulation quality assessment technique for AC-machine stator winding”, IEEE Transactions on Industry Application, Vol. 42, No. 4, pp. 946–957, 2006 DOI: https://doi.org/10.1109/TIA.2006.876077
P. O’Donnell, “Report of large motor reliability survey of industrial and commercial installations: Part I”, IEEE Transactions on Industry Application, Vol. IA-21, No. 4, pp. 853–864, 1985 DOI: https://doi.org/10.1109/TIA.1985.349532
“Report of large motor reliability survey of industrial and commercial installations: Part II”, IEEE Transactions on Industry Application, Vol. IA-21, No. 4, pp. 865–872, 1985 DOI: https://doi.org/10.1109/TIA.1985.349533
P. F. Albrecht, J. C. Appiarius, D. K. Sharma, “Assessment of the reliability of motors in utility applications—Updated”, IEEE Transactions on Energy Conversion, Vol. EC-1, No. 1, pp. 39–46, 1986 DOI: https://doi.org/10.1109/TEC.1986.4765668
G. C. Montanari, M. Cacciari, “A probabilistic insulation life model for combined thermal-electrical stresses”, IEEE Transactions on Electrical Insulation Vol. EI-20 No. 3, 1985 DOI: https://doi.org/10.1109/TEI.1985.348776
G. J. Anders, J. Endrenyi, G. L. Ford, G. C. Stone, “A probabilistic model for evaluating the remaining life of electrical insulation in rotating machines”, lEEE Transactions on Energy Conversion, Vol. 5, No. 4, pp. 761–767, 1990 DOI: https://doi.org/10.1109/60.63150
S. B. Pandey, “Estimation for a life model of transformer insulation under combined electrical and thermal stress”, IEEE Transactions on Reliability, Vol. 41, No. 3, pp. 466–468, 1992 DOI: https://doi.org/10.1109/24.159823
H. S. Endicott, B. D. Hatch, R. G. Sohmer, “Application of the eyring model to capacitor aging data”, IEEE Transactions Component parts, Vol. 12, No. 1, pp. 34-41, 1965 DOI: https://doi.org/10.1109/TCP.1965.1135088
T. S. Ramu, ‘‘On the estimation of life power apparatus insulation under combined electrical and thermal stress,’’ IEEE Transactions on Electrical Insulation, Vol. EI-20, pp. 70-78, 1985. DOI: https://doi.org/10.1109/TEI.1985.348759
D. Azizi, A. Gholami, A. Vahedi, “Analysis of the deterioration effects of stator insulation on the its electro-thermal property”, International Journal of Electrical and Electronics Engineering, Vol. 3, No. 11, pp. 697- 701, 2009.
How to Cite
MetricsAbstract Views: 380
PDF Downloads: 125
Authors who publish with this journal agree to the following terms:
- Authors retain the copyright and grant the journal the right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) after its publication in ETASR with an acknowledgement of its initial publication in this journal.