LINEAR-PROGRAMMING FOR DIRECTIONAL OVERCURRENT RELAY COORDINATION IN INTERCONNECTED POWER-SYSTEMS WITH CONSTRAINT RELAXATION

被引：31
作者：
ELRAFIE, HB
IRVING, MR
机构：
[1] Department of Electrical Engineering, University of Alexandria, Alexandria
[2] Brunel Institute of Power Systems, Brunel University, Uxbridge
来源：
ELECTRIC POWER SYSTEMS RESEARCH | 1993年 / 27卷 / 03期
关键词：
LINEAR PROGRAMMING; RELAY COORDINATION; INTERCONNECTED POWER SYSTEMS; TRANSMISSION SYSTEM PROTECTION; COMPUTER APPLICATIONS;
D O I：
10.1016/0378-7796(93)90047-I
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：
A linear programming method with constraint relaxation is applied to the directional overcurrent relay coordination problem in an interconnected power network. This method allows for hierarchical constraint relaxation and removal in cases where an infeasible problem exists. This method is applied to coordinate the directional overcurrent relays for an example interconnected power network with six buses and seven lines. Different suggestions for choosing the pickup current and the resulting time dial settings are presented. These results are compared with those given by the break-point approach. A complete algorithm for calculating the time dial settings corresponding to given pickup currents is introduced to make this method suitable for computer implementation.
引用
收藏
页码：209 / 216
页数：8
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