Research on the On-Line Measuring Method of Transformer Short-Circuit Reactance

Abstract:

The short-circuit reactance is an important parameter to characterize the transformer ability to resist the attack of short-circuit current in the design the operation process. In this paper, the on-line measuring method for short-circuit reactance based on electrical parameters' characteristics was presented, and the feasibility to carry out on-line monitoring for the transformer operation condition was also analyzed. Besides, the principle of two on-line measuring methods based on respectively exciting current compensation and elimination technique was researched, and the calculation equations were deduced. The comparison between the on-line results measured from moving mold experiment and those from off-line short-circuit experiment showed that these two methods were accurate and valid.

• Periodical: Advanced Materials Research (Volume 981)
• Pages: 636-640
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.981.636
• Online since: July 2014
• Authors: Yun Bing Wei*, Dong Zhang
• Keywords: On-Line Measurement, Channel Error, Power Transformer, Short-Circuit Reactance

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