Node Importance Evaluation of Cyber-Physical System under Cyber-Attacks Spreading

Table 1

Values of BC and improved CC under IEEE57 attacking the 18th node.

Importance ranking	Node	Improved CC	Node	BC	Importance ranking	Node	Improved CC	Node	BC
1	4	1	38	493.47	29	49	5	21	82.917
2	19	1	13	432.47	30	52	5	30	68.245
3	3	2	9	373.28	31	55	5	40	67.543
4	5	2	49	337.51	32	24	6	44	58.817
5	6	2	22	294.18	33	27	6	48	55.767
6	20	2	37	255.63	34	37	6	20	55.5
7	2	3	11	221.13	35	41	6	45	55.15
8	7	3	36	218.67	36	43	6	54	51.742
9	8	3	24	209.83	37	47	6	14	50.233
10	15	3	15	204.59	38	48	6	31	49.317
11	21	3	8	189.39	39	50	6	19	48.083
12	1	4	23	177.93	40	51	6	1	43.183
13	9	4	41	161.46	41	53	6	10	36
14	13	4	29	157.58	42	54	6	39	31.75
15	14	4	7	153.08	43	25	7	50	30.602
16	22	4	35	149.09	44	26	7	52	29.7
17	29	4	4	134.47	45	36	7	53	26.442
18	45	4	56	124.46	46	39	7	47	21.75
19	10	5	3	112.92	47	42	7	57	20.25
20	11	5	34	112.59	48	56	7	46	18.983
21	12	5	6	111.95	49	30	8	51	13.602
22	16	5	12	107.50	50	35	8	2	9.758
23	17	5	25	104.49	51	40	8	16	6.667
24	23	5	32	99.155	52	57	8	17	6.667
25	28	5	28	99.15	53	31	9	5	0
26	38	5	26	94.733	54	34	9	33	0
27	44	5	55	92.242	55	32	10	42	0
28	46	5	27	88.483	56	33	11	43	0

Notice. According to the improved CC, the lower the CC, the closer the node is to the attacked node and the higher the node importance.