Risk Assessment Model and Prevention Strategy of Cascading Failure in Unmanned Platform Integrated Power System

doi:10.12382/bgxb.2025.0514

Abstract

Abstract:

In a typical integrated power system （IPS），the generator sets，transmission lines and distribution network are integrated in a relatively confined space，which leads to the tight coupling between the devices and accelerates the propagation of cascading failures.A risk assessment model of cascading failures in unmanned platform IPS is established based on pattern search theory and risk assessment theory，which is used to analyze the cascading failure of IPS under severe operating environment and frequent mode switching.Based on the model，a risk assessment is performed on a typical MVDC IPS，and the influences of different operation conditions and reliability parameters on the cascading failure risk are also analyzed.The proposed risk assessment model is validated through risk assessment and anlysis.Based on the risk assessment results，the weak links of the system are identified，and the corresponding prevention strategies are proposed by optimizing the equipment structure.The proposed cascading failure prevention strategies are verified through both simulation and experiment.

Key words: unmanned platform, integrated power system, cascading failure, risk assessment, intelligent management, prevention strategy

YE Zhihao, ZHANG Xueyan, WU Jing, LUO Xi. Risk Assessment Model and Prevention Strategy of Cascading Failure in Unmanned Platform Integrated Power System[J]. Acta Armamentarii, 2025, 46(S1): 250514-.

Figures/Tables 24

References 27

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故障线路编号	初始故障风险值/10^-6	故障线路编号	初始故障风险值/10^-6
L41	318.61	L28	37.013
L43	318.61	L34	36.758
L38	37.993	L27	23.428
L30	44.436	L14	23.428
L35	37.617	L12	3.6235

故障线路编号	初始故障风险值/10^-6	故障线路编号	初始故障风险值/10^-6
L41	318.61	L28	37.013
L43	318.61	L34	36.758
L38	37.993	L27	23.428
L30	44.436	L14	23.428
L35	37.617	L12	3.6235

序号	连锁故障路径	发生概率/10^-4	风险值/10^-6	频率/Hz
1	L41-L35-L42-L30	1.1283	304.82	49.55
2	L41-L35-L34-L37	4.1067	277.81	49.64
3	L41-L35-L34-L39	1.6435	121.62	49.63
4	L41-L35-L36-L30	1.6236	110.42	49.46
5	L41-L35-L34-L28	0.3659	25.613	49.65
6	L41-L35-L39-L28	0.1108	6.6474	49.70
7	L41-L35-L39-L28	0.3886	2.3313	49.70
8	L41-L35-L34-L30	0.3078	2.2163	49.64
9	L41-L35-L34-L12	0.3119	2.1213	49.66
10	L41-L35-L36-L12	0.3760	2.1059	49.72

序号	连锁故障路径	发生概率/10^-4	风险值/10^-6	频率/Hz
1	L41-L35-L42-L30	1.1283	304.82	49.55
2	L41-L35-L34-L37	4.1067	277.81	49.64
3	L41-L35-L34-L39	1.6435	121.62	49.63
4	L41-L35-L36-L30	1.6236	110.42	49.46
5	L41-L35-L34-L28	0.3659	25.613	49.65
6	L41-L35-L39-L28	0.1108	6.6474	49.70
7	L41-L35-L39-L28	0.3886	2.3313	49.70
8	L41-L35-L34-L30	0.3078	2.2163	49.64
9	L41-L35-L34-L12	0.3119	2.1213	49.66
10	L41-L35-L36-L12	0.3760	2.1059	49.72

序号	连锁故障路径	发生概率/10^-4	风险值/10^-6	频率/Hz
1	L20-L21-L26-L27	1.012	8.538	49.51
2	L20-L21-L26-L12	1.271	5.927	49.75
3	L20-L26-L14-L2	2.271	5.882	49.59
4	L20-L26-L14-L1	2.351	4.3963	49.59
5	L20-L21-L14-L15	2.147	3.8860	49.62
6	L20-L26-L14-L12	1.568	2.948	49.60
7	L20-L26-L12-L8	1.195	2.735	49.67
8	L20-L26-L34-L37	0.1948	1.3285	49.59
9	L20-L34-L37-L12	0.1568	0.9031	49.62
10	L20-L21-L26-L27	1.012	8.538	49.51