Resilience Metrics for Integrated Power and Natural Gas Systems

The integrated power and natural gas system (IPGS) is a promising technique against extreme weather. In this letter, a valley-shaped resilience model is proposed to evaluate the performance of IPGSs under extreme weather and inter-energy assistances between the electric power sector and the natural gas sector. Furthermore, a quantification metrics framework for IPGS resilience evaluation is raised. Novel metrics are proposed, especially the distortion rate (Theta) and linepack effect (Delta t*) for quantifying coupling tightness and assistance from natural gas transient in resilience perspective respectively. Evaluation on different restoration strategies is conducted to validate the effectiveness of the proposed metrics framework.

Automated summary

This letter proposes a valley-shaped resilience model and a quantification metrics framework for evaluating the resilience of IPGS. New metrics, including distortion rate and linepack effect, are proposed to quantify the coupling tightness and assistance from natural gas transient in the system. The effectiveness of the proposed metrics framework is validated through the evaluation of different restoration strategies.