NDLI: Temperature prediction on power transformers and the guide on load dispatch

Content Provider	IEEE Xplore Digital Library
Author	Lihua Chen Zhong Zheng Shaoyu Liu Liang Guo Chun Dun
Copyright Year	2012
Description	Author affiliation: North China Electrical Power Research Institute, Beijing, 100045, China (Shaoyu Liu; Liang Guo; Chun Dun) \|\| State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources, Beijing Key Laboratory of High Voltage & EMC, North China Electrical Power University, Beijing, 102206, China (Lihua Chen; Zhong Zheng)
Abstract	Transformer winding temperature is a function of the load current and ambient temperature. As the maximum winding temperature at steady state operation is limited by IEEE/IEC standards, the higher the ambient temperature, the lower the permitted current. When the high temperature warning forecast from government climatological stations is available, the maximal load can be pre-calculated and, if necessary, the extra load can be pre-shifted to other transformers. This can help the dispatchers of power grid to prearrange the load in the power network from the 3-day to 7-day weather forecast of the climatological stations. This paper used the Finite Element approach to calculate the electrical-thermal-fluid dynamic phenomena in the power transformer. The results gave the relationship between winding temperature, load current, and the ambient temperature. A four dimension interpolation method is employed to give a good prediction of the power station temperature from the data of the climatological stations around. The four dimensions used include the longitude, the latitude, the altitude, and the time of the power stations and the climatological stations, respectively. The final results are discussed and possible applications are presented.
Starting Page	444
Ending Page	447
File Size	997562
Page Count	4
File Format	PDF
ISBN	9781467312530
ISSN	00849162
e-ISBN	9781467312523
e-ISBN	9781467312516
DOI	10.1109/CEIDP.2012.6378815
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-14
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Oil insulation Temperature measurement Windings Temperature distribution Power transformer insulation Power generation
Content Type	Text
Resource Type	Article

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