Research on the invulnerability of interdependent networks in energy internet under seismic disasters: A case study of Beijing
以北京为例构建地震场景，研究四种不同结构的电力信息相依网络在震灾下的抗毁性，发现电力信息融合会抑制节点抗毁性，低震级下网络仍易大规模崩溃。
The deep coupling of power and information in the Energy Internet enhances overall efficiency while simultaneously exposing them to unprecedented cascading failure risks during extreme disasters. Research on the invulnerability of traditional single networks struggles to capture the core risk of cascading failures triggered by the coupling of networks. This paper takes Beijing, a megacity, as an example to build seismic disaster scenarios and construct four types of Energy Internet power information interdependent networks with different network structures, examining the invulnerability of these network structures under various seismic scenarios. The results indicate that ① the integration of power information has suppressed the performance of node invulnerability, which is the fundamental reason for the more fragile network structure;② the interdependent networks remain vulnerable to widespread collapse during low-magnitude seismic scenarios and fall far short of absolute safety thresholds during high-magnitude seismic scenarios; ③ the invulnerability of Energy Internet networks under different network structures varies significantly with the depth of power-information integration. The BA (scale-free)-WS (small-world) network consistently performs poorly throughout the full coupling process. This paper recommends that engineering practices should progressively incorporate the critical factor of interactive invulnerability while maintaining the capability for decoupled operation of the single-side network under extreme scenarios.