A New Algorithm for the Available Transfer Capability Determination

Table 2

Results of point-to-point ATC for the 2737-bus polish power system.

Point of transfers		Limiting line	ATC (MW)		CPU time (minute)		Number of load flow solutions
Selling bus	Buying bus		Ralston’s with cubic-spline	Recursive AC power flow	Ralston’s with cubic-spline	Recursive AC power flow	Ralston’s with cubic-spline	Recursive AC power flow
98	2636	2507–2513	140	140	0.29	15.33	10	140
2555	108	108–90	419	419	0.28	15.01	10	419
2727	1038	1260–1839	110	110	0.30	15.89	10	110
323	1000	1001–1441	177	176	0.29	15.17	10	176
26	205	2562–2092	376	376	0.29	15.60	10	376
1025	1564	1566–1564	83	82	0.29	15.17	10	82
55	86	91–131	589	589	0.28	14.89	10	589
1992	2004	2250–1984	157	156	0.28	14.90	10	156
117	1	26–1	642	641	0.29	15.55	10	641
240	125	514–319	345	345	0.28	14.99	10	345
158	978	1212–1014	247	246	0.28	14.98	10	246
977	833	977–1278	128	128	0.29	15.16	10	128
878	620	719–620	90	90	0.28	15.09	10	90
793	300	793–592	148	148	0.28	15.06	10	148
665	430	392–351	108	107	0.29	15.31	10	107
574	99	1929–420	254	253	0.29	15.18	10	253
444	65	444–432	120	120	0.28	15.09	10	120
764	752	752–681	104	103	0.29	15.32	10	103
2731	2	696–453	161	161	0.29	15.36	10	161
135	2737	2737–1872	74	73	0.29	15.48	10	73
1006	1921	1921– 856	90	90	0.28	15.01	10	90
1673	1781	1781–1234	246	246	0.28	14.88	10	246
366	628	632–628	73	72	0.29	15.23	10	72
56	533	528–355	155	155	0.28	15.03	10	155
135	378	250–248	86	85	0.27	15.16	10	85
150	164	2216–2092	98	97	0.28	15.13	10	97
221	165	2065–221	55	55	0.26	14.10	10	55
222	212	530–523	74	73	0.29	15.22	10	73
2097	1019	2097–2252	104	104	0.30	15.24	10	104
2279	1227	2216–2092	50	50	0.25	14.39	10	50