Resilience Evaluation and Enhancement Strategy of Distribution Network Considering Impact of Seismic Attack on Transportation Networks

doi:10.16183/j.cnki.jsjtu.2022.152

Abstract

Abstract:

Serious earthquake disasters not only cause power outages in distribution network, but also destroy transportation networks, which hinders the transportation of resources for restoration of distribution network and slows down the restoration. This paper proposes an improved resilience evaluation method and a resilience enhancement strategy of distribution network considering the effects of seismic attack on transportation networks. First, a seismic attack model is established to describe the relation between earthquake disasters and failure probability of transportation-distribution networks based on peak ground acceleration. The impact of earthquake disasters on transportation-distribution networks is quantified, and the failure scenarios are generated. Then, a resilience evaluation index is proposed by introducing the waiting time for road repair of emergency repair teams. Afterwards, a bi-level optimization model for distribution network restoration considering the fault line repair, the road repair, and the emergency resource scheduling is established and solved. The upper layer aims at the minimum power loss load, while the lower layer takes the minimum waiting time of the repair team as the goal. Finally, case studies on a coupling example of a 12-node transportation network and an IEEE 33-node distribution network verify the feasibility of the improved resilience index and the effectiveness of the proposed method. The results show that the resilience index considering seismic attack on transportation networks is accurate, and the restoration strategy can effectively enhance the resilience of distribution network in earthquake disasters.

Key words: earthquake disaster, distribution system resilience, transportation-distribution networks, resilience evaluation index, restoration strategy

CLC Number:

TM711

YAN Wenting, YANG Long, LI Changcheng, LUO Wei. Resilience Evaluation and Enhancement Strategy of Distribution Network Considering Impact of Seismic Attack on Transportation Networks[J]. Journal of Shanghai Jiao Tong University, 2023, 57(9): 1165-1175.

Figures/Tables 10

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方案	R_n/%	R_r/%	R_c/(MW?h)	系统恢复时间/h	重要负荷恢复时间/h
不考虑受损交通网	79.28	79.28	51.410	14.363	14.263
考虑受损交通网	54.18	84.13	57.503	22.825	22.725

恢复策略	R_n/%	系统缺失面积/(MW?h)	系统恢复时间/h	重要负荷恢复时间/h
对比策略1	63.14	46.379	19.5	7.275
对比策略2	53.85	50.024	24	8.775
对比策略3	65.03	38.235	19.5	2.848
对比策略4	64.42	42.042	19.5	6.125
本文优化策略	65.96	34.231	19.5	1.425