A New Hybrid Nelder-Mead Particle Swarm Optimization for Coordination Optimization of Directional Overcurrent Relays

Table 4

P/B relays and the close-in fault currents for an IEEE 14-bus test system.

Primary relay		Backup relay		Primary relay		Backup relay		Primary relay		Backup relay
No.	Current	No.	Current	No.	Current	No.	Current	No.	Current	No.	Current
1	11650	6	654	8	3880	30	188	19	955	17	955
5	12400	2	1980	29	4720	7	1220	18	725	20	725
2	4260	4	750	29	4720	9	1990	22	1930	29	499
2	4260	12	875	29	4720	13	1070	22	1930	24	1160
2	4260	8	723	29	4720	25	449	22	1930	32	280
3	7310	1	3920	6	3830	3	1280	23	1200	21	434
3	7310	12	848	6	3830	10	1990	23	1200	29	499
3	7310	8	689	6	3830	16	560	23	1200	32	281
11	7180	4	725	4	3920	5	1370	30	1810	21	424
11	7180	1	3920	4	3920	16	562	30	1810	24	1130
11	7180	8	695	4	3920	10	1990	30	1810	32	275
7	7330	1	3920	15	4610	5	1360	31	2060	21	428
7	7330	4	716	15	4610	3	1280	31	2060	24	1150
7	7330	12	845	15	4610	10	1970	31	2060	29	494
13	3280	11	1380	9	3260	5	1390	27	2030	26	1230
12	3130	14	1250	9	3260	3	1310	27	2030	23	808
26	4640	9	2080	9	3260	16	569	25	1430	28	633
26	4640	13	1120	16	1490	40	201	25	1430	23	806
26	4640	7	1270	16	1490	18	388	24	1870	26	1230
26	4640	30	179	16	1490	37	51	24	1870	28	634
10	3110	13	1140	17	2210	15	1110	37	572	35	572
10	3110	7	1290	17	2210	37	51	36	781	38	781
10	3110	25	495	17	2210	40	199	35	1480	33	368
10	3110	30	190	39	2400	15	1120	35	1480	39	1110
14	4030	9	2090	39	2400	18	389	34	1390	36	284
14	4030	7	1270	39	2400	37	47	34	1390	39	1110
14	4030	25	489	38	2530	15	1110	40	654	36	285
14	4030	30	188	38	2530	40	191	40	654	33	370
8	3880	9	2090	38	2530	18	386	32	547	34	547
8	3880	25	489	21	564	19	564	33	783	31	783
8	3880	13	1120	20	1310	22	1310	x	x	x	x