A Load Test Research on Large Power Transformers

Abstract:

Due to the large capacity of large power transformers, normally the power capacity of a load test is difficult to meet the test requirement, which makes the ancillary devices such as induction regulator, intermediate transformer etc. difficult to meet the test demands too. The transformer factories with limited power capacity can only perform load test under less than fifty-percent of the rated load current, which not obeys the standards and technical protocols. Thus, a field load test method for large power transformers is proposed in this paper. It carries out the reactive power compensation with compensation capacitors, which reduces the capacity of test power supply and makes the field load test possible. This method also gives a guarantee for the safe and stable operation of power transformers.

• Periodical: Advanced Materials Research (Volumes 1070-1072)
• Pages: 1007-1010
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1070-1072.1007
• Online since: December 2014
• Authors: Han Bo Zheng*, Jin Hua Han, Wei Wang, Li Nan Wang, Yu Quan Li, Xiao Gang Li
• Keywords: Compensation Capacitors, Load Loss, Load Test, Power Transformer, Short-Circuit Impedance

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