TY - JOUR ID - 72446 TI - A Novel Objective Function for Directional Overcurrent Relays Coordination JO - International Journal of Engineering JA - IJE LA - en SN - 1025-2495 AU - Mousavi Motlagh, Seyyed Hadi AD - protection and control group, zanjan regional electric company Y1 - 2015 PY - 2015 VL - 28 IS - 2 SP - 205 EP - 213 KW - Relay Coordination KW - Artificial Algorithms KW - Objective Function KW - Relay TMSs DO - N2 - Directional overcurrent relays (DOCRs) are widely used to protect power systems. For optimal coordination of DOCRs, several techniques have been proposed to solve this problem. A common way of optimal coordination of DOCRs is using evolutionary algorithms such as genetic algorithm (GA). In this paper, a novel strategy for DOCRs coordination is proposed. In the proposed strategy, a new objective function (OF) is introduced. The proposed objective function can removed mis-coordination between paired relays and can result in better coordination. Proposed OF is applied to 6-bus and 30-bus sample networks.   UR - https://www.ije.ir/article_72446.html L1 - https://www.ije.ir/article_72446_66dfc53d64ed7ff0016c67702e404271.pdf ER -