Adaptive relays for overhead line protection

被引:10
作者
Calderaro, V. [1 ]
Galdi, V. [1 ]
Piccolo, A. [1 ]
Siano, P. [1 ]
机构
[1] Univ Salerno, Dept Informat & Elect Engn, I-84084 Salerno, Italy
关键词
protection system; overhead line; adaptive relay; TRANSMISSION-LINES;
D O I
10.1016/j.epsr.2006.11.001
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In the liberalized energy market scenario protective relays play an important role in assuring continuous service in the power system where a malfunctioning could lead to serious damages to a wide number of operators having access to the power system. Considering that power lines are operated many times below a rated load current, in this paper an adaptive procedure is presented in order to manage power distribution systems according to dependability or security requirements. In particular, a procedure to obtain an inverse time trip curve by means of a microprocessor, connected to a relay. is presented. The procedure adapts the trip characteristic depending on the conductor temperature, wind speed, emissivity and solar absorbity and is implemented on a microprocessor Rabbit 2200 considering a Drake conductor, 795 kcmil 26/7 ACSR. (C) 2006 Published by Elsevier B.V.
引用
收藏
页码:1552 / 1559
页数:8
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