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Current Differential Protection of Transmission Line Using the Moving Window Averaging Technique

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Title Current Differential Protection of Transmission Line Using the Moving Window Averaging Technique
 
Creator DAMBHARE, S
SOMAN, SA
CHANDORKAR, MC
 
Subject relay
system
current differential protection
global positioning system (gps)
moving window averaging technique
series-compensated lines
transmission line
 
Description We propose a new approach to current differential protection of transmission lines. In this approach, we transform the instantaneous line current(s) by using a moving window averaging technique. If the time span of moving window is equal to one-cycle time, then the steady-state value of the transformed current is zero for a periodic signal which is composed of fundamental and harmonic frequencies. Signal distortions ( e. g., a fault) cause the transformed currents to deviate from the nominal zero value. This permits the development of a sensitive, secure, fast, and yet simple current differential protection scheme. The scheme can be applied in toto to series-compensated transmission lines. Results on a four-machine ten-bus system and comparative evaluation with state-of-the-art methods brings out promise of the proposed method.
 
Publisher IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
 
Date 2011-07-31T23:27:42Z
2011-12-26T12:53:11Z
2011-12-27T05:40:23Z
2011-07-31T23:27:42Z
2011-12-26T12:53:11Z
2011-12-27T05:40:23Z
2010
 
Type Article
 
Identifier IEEE TRANSACTIONS ON POWER DELIVERY, 25(2), 610-620
0885-8977
http://dx.doi.org/10.1109/TPWRD.2009.2032324
http://dspace.library.iitb.ac.in/xmlui/handle/10054/8273
http://hdl.handle.net/10054/8273
 
Language en