NDLI: An improved scheme for the detection of permanent and transient earthed faults in reactor-compensated transmission lines

Content Provider	IEEE Xplore Digital Library
Author	Wenquan Shao Wangni Zhang Yili Liu Yanbin Li
Copyright Year	2015
Description	Author affiliation: Dept. of Electron. & Inf., Xi'an Polytech. Univ., Xi'an, China (Wenquan Shao; Wangni Zhang; Yili Liu; Yanbin Li)
Abstract	Three-phase reclosure with dead time is widely applied in robust grid, but its blind reclosing in the case of permanent faults or arcing transient faults may cause serious damage in power system. It is important to detect the nature of an earthed fault before reclosing for three-phase reclosure, which is helpful to improve successful reclosing rate and meet the increasing requirement on self-healing ability in smart grid. Some researchers have developed schemes based on parameters recognition in relaying protection, which is independent of damping direct current component and various harmonic components etc. On the basis of the discussion of parameters detection of zero-mode equivalent model in transient faults without arc, the proposed model is acted as reference model to develop nature detection scheme of earthed faults using model parameters recognition. Moreover, this paper put forward detection criterions of permanent earthed faults, which are based on the parameters recognition such as the inductances of shunt reactors, neutral reactor and the inductance combined by the former respectively. After analyzing the performance and applicability of the proposed criterions theoretically, the criterion based on inductance of neutral reactor is of better performance than the others in earthed faults. Simulations under different conditions show that the optimized detection scheme in earthed faults is of higher sensitivity and reliability.
Starting Page	1
Ending Page	5
File Size	355470
Page Count	5
File Format	PDF
ISBN	9781467380409
DOI	10.1109/PESGM.2015.7286019
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-07-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Circuit faults Transient analysis Inductors Power transmission lines Shunts (electrical) Inductance zero-mode transmission line earthed faults three-phase reclosure shunt reactors
Content Type	Text
Resource Type	Article

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