期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：186
期号：3
页码：012017
DOI：10.1088/1755-1315/186/3/012017
语种：English
出版社：IOP Publishing
摘要：This paper introduces a method to realize transformer differential protection. In a UHVDC transmission system, the converter transformer protection device adopts the dual configuration. Due to the lack of TA configuration, A set protection configuration of the converter protection device is complete, and B set protection configuration is incomplete.B set protection cannot achieve differential protection, zero sequence differential protection, winding differential protection and connection line differential protection. The two systems can not be completely duplex, which will affect the safe and stable operation of the converter and the daily operation and maintenance. In view of this phenomenon, this paper presents a new method to realize differential protection of converter transformer. The application of this method can solve B set problem of incomplete protection configuration. This method can be used for reference in field application.
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