NDLI: The comparative investigation on current differential criteria between the one using phase current and the one using phase-phase current difference for the transformer using Y-delta connection

Content Provider	IEEE Xplore Digital Library
Author	Xiangning Lin Hanli Weng Bin Wang Zhiqian Bo
Copyright Year	2009
Description	Author affiliation: Electric Power Security and High Efficiency Lab, Huazhong University of Science and Technology(HUST), Wuhan 430074, P.R. China (Hanli Weng) \|\| College of Electrical Engineering and Information Technology, Three Gorges University, Yichang 443002, Hubei Province, China (Xiangning Lin; Bin Wang) \|\| AREVA T&D ¿ Automation & Information Systems, Stafford ST17 4LX, U.K. (Zhiqian Bo)
Abstract	The performance of two types of current differential protection criteria is investigated by quantitative analysis. Among which, one is the criterion based on phase current differential (PD), and the other is implemented based on the phase-phase current differential (PPD). Some manufacturers claim that the zero sequence current is removed when PPD based criterion is applied and the sensitivity of the protection in the event of the earthed fault is lowered. This point of view is challenged in this paper, and the PD based differential criterion is introduced as the reference to investigate the performance of the PPD based criterion. It is proven with the sensitivity analysis that the improvement to the sensitivity arising from the PD comes from the revision of the bias current rather than the differential current.
Starting Page	1
Ending Page	6
File Size	541169
Page Count	6
File Format	PDF
ISBN	9781424442416
ISSN	19449925
DOI	10.1109/PES.2009.5275890
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-07-26
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power transformers Protection Performance analysis Manufacturing Sensitivity analysis Tellurium Security Protective relaying Educational institutions Information technology Consistent security Power transformer Y/Δ connection Phase current differential (PD) Phase-phase current differential (PPD)
Content Type	Text
Resource Type	Article

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