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Table 5 Optimal relay setting with NI, VI, EI and mixed relay characteristics for dual setting DOCR in islanded mode

From: Coordination of dual setting overcurrent relays in microgrid with optimally determined relay characteristics for dual operating modes

Relay NI relay characteristics VI relay characteristics EI relay characteristics Mixed relay characteristics RCI
Forward Reverse Forward Reverse Forward Reverse Forward Reverse
TMS PS TMS PS TMS PS TMS PS TMS PS TMS PS TMS PS TMS PS
R1 0.1 0.5 0.3990 1.7560 0.1 0.6179 0.8838 1.0268 0.1 1.1507 0.6248 1.6556 0.4037 0.5 0.8180 1.5353 2
R2 0.1 0.5 1.1 1.9999 0.1 0.7874 1.1 2 0.5490 0.5543 1.1 1.9860 0.6568 0.5 1.1 2 2
R3 0.1001 0.5107 0.1 0.5 0.1110 0.5 0.1 0.5 0.1 0.9322 0.1036 0.5 0.1499 0.7313 0.1 0.5 2
R4 0.1 0.5 1.1 2 0.1 0.5001 1.1 1.9994 0.1361 0.5150 1.1 1.9989 0.1 0.5 1.0999 1.9999 1
R5 0.1001 0.5 0.8837 0.5627 0.1746 0.5 0.2198 0.8933 0.1296 1.2249 0.1773 0.8465 0.3070 0.7862 0.4373 0.7167 2
R6 0.1 0.5023 1.1 2 0.1078 0.7464 1.1 2 0.2603 0.8131 1.1 1.9987 0.1082 0.7492 1.1 2 1
R7 0.1 0.5033 0.2640 1.0202 0.1 0.5 1.0687 0.5626 0.1 0.75 0.9422 0.75 0.1693 0.5258 1.1 0.6901 2
R8 0.1 0.5 1.0332 1.6895 0.1 0.5 1.1 2 0.1707 0.5212 1.1 1.9033 0.1690 0.5230 1.1 2 2
R9 0.1 0.5 0.9751 0.7813 0.1001 0.5 0.4204 1.7383 0.1 0.6063 1.1 1.6982 0.1421 0.5 0.5146 1.7406 2
R10 0.1 0.5 1.0968 1.9100 0.1126 0.5286 1.1 1.9979 0.3576 0.5108 1.1 1.9918 0.3705 0.5 1.1 2 2
R11 0.1 0.5 1.0970 2 0.1269 0.5 1.1 2 0.1779 0.7685 1.0928 1.9973 0.3679 0.53 1.1 2 2
R12 0.1001 0.5 0.8712 1.6211 0.1 0.5 0.9056 1.7699 0.1173 0.5078 0.7916 1.9945 0.1284 0.5 0.9226 1.5083 2
R13 0.1 0.5 1.1 2 0.1346 0.5 1.1 2 0.4711 0.5079 1.1 2 0.3753 0.5548 1.1 2 2
R14 0.1 0.5 0.1 0.7615 0.1 0.5128 0.3620 0.9708 0.1970 0.5121 0.9614 0.75 0.1 0.7111 0.9115 0.7626 2
R15 0.1 0.5 1.1 1.5384 0.1315 0.5026 0.8687 2 0.4680 0.5 1.1 1.3455 0.4483 0.5 1.1 1.6245 2
R16 0.1 0.5 0.3807 2 0.1121 0.5 0.9770 1.0648 0.3744 0.5 0.6468 1.45 0.1999 0.6384 1.0960 1.2421 2
Top 3.9882 (s)     1.7765 (s)     1.6928 (s)     1.6345 (s)